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THE PLESSEY COMPANY LIMITED patents filed
Company number: 00203848Title | Date Filed | Status | Publication number |
---|---|---|---|
Surface acoustic wave transducer | 1989-12-16 | Terminated | GB2239144 |
Telephone handset | 1989-08-22 | Terminated | GB2235850 |
Direct frequency synthesizer | 1989-07-10 | Terminated | GB2233847 |
Hose coupling | 1989-04-19 | Terminated | GB2230832 |
Voltage-controlled current source | 1989-03-31 | Terminated | GB2230155 |
Marine cable vibration damper | 1988-12-08 | Terminated | GB2225831 |
A data synchronisation arrangement | 1988-12-08 | Terminated | GB2228848 |
Marine body exhibiting low fluid friction | 1988-12-08 | Terminated | GB2225754 |
Signal current interconnect for ECL/CML logic circuits | 1988-11-08 | Terminated | GB2224610 |
Underwater acoustic sensor | 1988-11-07 | Ceased | GB2339617 |
A print head | 1988-10-25 | Terminated | GB2225869 |
Improvements relating to data transmission systems | 1988-10-18 | Terminated | GB2225464 |
Protective coating | 1988-10-01 | Terminated | GB2223355 |
Temperature control of light-emitting devices | 1988-08-24 | Terminated | GB2224374 |
Integrated injection logic circuit | 1988-08-23 | Terminated | GB2222305 |
Telephone instrument | 1988-08-16 | Terminated | GB2214761 |
Coupling waveguides using transverse cylindrical lenses | 1988-07-06 | Terminated | GB2220501 |
A spectral filter | 1988-06-14 | Terminated | GB2219853 |
Frequency synthesiser | 1988-05-31 | Terminated | GB2219451 |
Electro-optic device | 1988-05-21 | Terminated | GB2218822 |
Transconductance mixer | 1988-05-13 | Terminated | GB2218585 |
Multichannel radio communication system | 1988-05-12 | Terminated | GB2218597 |
Acoustic load device | 1988-05-12 | Terminated | GB2218593 |
Improved stability crystal oscillator | 1988-05-11 | Terminated | GB2218586 |
Programmable frequency divider | 1988-05-05 | Terminated | GB2218230 |
Electrical control systems | 1988-05-05 | Terminated | GB2218231 |
Optical coupler | 1988-04-27 | Terminated | GB2217870 |
Direct frequency synthesiser | 1988-04-07 | Terminated | GB2217127 |
A method and apparatus for demultiplexion | 1988-01-21 | Terminated | GB2214756 |
Noise-controlled frequency-modulation signal detector | 1988-01-18 | Terminated | GB2214742 |
Environmental protection of superconducting thin films | 1987-12-23 | Terminated | GB2213838 |
Production of superconducting thin films by ion beam sputtering from a single ceramic target | 1987-12-11 | Terminated | GB2213501 |
An integrated circuit having a patch array | 1987-11-30 | Terminated | GB2212978 |
Transportation system having an inter-vehicle distance control arrangement | 1987-10-20 | Terminated | GB2211334 |
Apparatus by which auxiliary slide-in units are connected toslide-in units | 1987-10-20 | Ceased | GB2211359 |
A process for soldering a component to a printed circuit board | 1987-10-10 | Terminated | GB2210818 |
Contents verification apparatus | 1987-10-09 | Terminated | GB2210996 |
Linear differential amplifier | 1987-10-08 | Terminated | GB2211044 |
A current switching arrangement | 1987-10-08 | Terminated | GB2211043 |
Method of alignment of led chips | 1987-09-30 | Terminated | GB2210500 |
A bi-phase modulator | 1987-09-15 | Terminated | GB2209908 |
Radiation sensitive resist material | 1987-09-09 | Terminated | GB2209529 |
Hybrid electrical and non-electrical connector | 1987-08-19 | Terminated | GB2195786 |
Circuit board back plane assembly with electrical and optical connectors | 1987-08-06 | Terminated | GB2208566 |
Interconnection highway arrangements | 1987-08-06 | Ceased | GB2209244 |
A tilting-floor bucket coin escrow | 1987-07-15 | Terminated | GB2206986 |
Frequency synthesiser with provision for standby mode | 1987-07-11 | Ceased | GB2207309 |
Gallium arsenide device | 1987-07-01 | Terminated | GB2222304 |
Logic circuits | 1987-06-29 | Terminated | GB2192319 |
Photoreactive lenses and pyran compounds | 1987-06-15 | Terminated | GB2193005 |
Linkwork | 1987-06-05 | Terminated | GB2205375 |
Telephone instruments | 1987-05-08 | Terminated | GB2191064 |
Organic optical waveguides | 1987-04-24 | Ceased | GB2189624 |
A programmable electronic filter | 1987-04-01 | Terminated | GB2189100 |
Digital divider | 1987-03-31 | Terminated | GB2202974 |
Polarisation rotator associated with reflective surface | 1987-02-26 | Terminated | GB2203259 |
Optical switching arrangement | 1987-02-10 | Terminated | GB2201313 |
Vapour deposited metal films for integrated circuit manufacture | 1987-02-10 | Terminated | GB2204065 |
Method of producing quartz plate | 1986-12-10 | Terminated | GB2184434 |
Semiconductor device manufacture | 1986-11-19 | Terminated | GB2200794 |
Coplanar waveguide probe | 1986-11-07 | Terminated | GB2197081 |
Microfabrication | 1986-11-05 | Ceased | GB2189480 |
Digital multiplier | 1986-11-01 | Terminated | GB2199168 |
Sensor systems for automatically sensing the presence of stationary objects | 1986-10-23 | Terminated | GB2196733 |
Particulate oxide materials | 1986-10-23 | Terminated | GB2196621 |
Coherent optical communications systems | 1986-10-20 | Ceased | GB2183055 |
Frequency synthesiser | 1986-10-20 | Terminated | GB2196455 |
An arrangement for linking multistage switching matrices | 1986-10-15 | Terminated | GB2196503 |
Optical network incorporating holographic data storage and processing | 1986-10-14 | Ceased | GB2196146 |
Optical communications system | 1986-10-13 | Terminated | GB2181921 |
Frequency alignment circuit and synthesizer therefor | 1986-09-30 | Terminated | GB2181312 |
Method of treatment for electron resist | 1986-08-21 | Ceased | GB2194242 |
Integrated circuit devices | 1986-08-20 | Terminated | GB2194388 |
Bonding integrated circuit devices | 1986-08-20 | Terminated | GB2194387 |
Balun circuit | 1986-08-18 | Terminated | GB2179801 |
Conference bridge system | 1986-08-15 | Terminated | GB2194120 |
Improvements in or relating to fm demodulators | 1986-08-15 | Ceased | GB2179514 |
A splice protection assembly | 1986-08-08 | Ceased | GB2193603 |
Optical resonant assembly | 1986-08-06 | Ceased | GB2180360 |
Efficiency enhanced voltage multiplier | 1986-08-02 | Terminated | GB2193392 |
Telecommunication exchange equipment incorporating multiparty lines using integrated service digital network techniques | 1986-07-31 | Terminated | GB2193416 |
Radio interference cancellation circuit | 1986-07-17 | Terminated | GB2192769 |
Coherent light communication system | 1986-06-28 | Terminated | GB2192109 |
A process for silicon device isolation | 1986-06-17 | Terminated | GB2194858 |
Calibrating microwave integrated circuit test systems | 1986-06-13 | Terminated | GB2184849 |
Scanning radar systems | 1986-06-13 | Terminated | GB2177566 |
Optical fibre cables | 1986-06-12 | Terminated | GB2191596 |
Frequency synthesiser | 1986-06-11 | Ceased | GB2188804 |
Frequency synthesiser | 1986-06-06 | Terminated | GB2191352 |
Surface-mounting a connector on a printed circuit board | 1986-06-03 | Terminated | GB2176350 |
Solid propellant burn rate control device | 1986-05-21 | Terminated | GB2190729 |
Terminal apparatus | 1986-05-16 | Terminated | GB2190566 |
Screw coupled connectors | 1986-05-12 | Terminated | GB2192035 |
Improvements in and relating to attenuators | 1986-04-30 | Ceased | GB2193400 |
Improvements in or relating to electrical contactors | 1986-04-25 | Ceased | GB2189657 |
Optical assay | 1986-04-07 | Ceased | GB2173895 |
Improvements relating to data transmission systems | 1986-04-07 | Ceased | GB2188818 |
An etch technique for metal mask definition | 1986-04-01 | Terminated | GB2189903 |
Carrier for high frequency integrated circuits | 1986-03-21 | Terminated | GB2188194 |
Radio communication system | 1986-03-21 | Terminated | GB2188514 |
Improvements relating to optical fibre light transmission systems | 1986-03-17 | Terminated | GB2188204 |
Ring bus communications systems | 1986-03-17 | Terminated | GB2188216 |
Aerial socket assembly | 1986-03-14 | Terminated | GB2187895 |
Scanning optical microscopes | 1986-03-11 | Terminated | GB2173666 |
A method of improving the oxidation resistance of graphites | 1986-02-28 | Terminated | GB2187178 |
Impedance matching circuit for an aerial | 1986-02-21 | Terminated | GB2187042 |
Electrical connection terminal | 1986-02-17 | Terminated | GB2187047 |
Vehicle identity detection system | 1986-02-07 | Terminated | GB2186409 |
Reference circuit | 1986-02-07 | Terminated | GB2186453 |
Decoding method and apparatus for biphase coded signals | 1986-02-06 | Ceased | GB2171277 |
Phase and quadrature receiver | 1986-01-30 | Terminated | GB2186139 |
Beta compensating current source circuit | 1986-01-30 | Terminated | GB2186141 |
Method for producing integrated circuit interconnects | 1986-01-30 | Terminated | GB2186424 |
Contact pin | 1986-01-30 | Terminated | GB2186124 |
Method of fabricating an mos transistor | 1986-01-25 | Terminated | GB2185851 |
Semiconductor device contact jig | 1986-01-24 | Ceased | GB2185850 |
Microwave antenna structure | 1985-12-24 | Terminated | GB2184605 |
Target identification system | 1985-12-20 | Terminated | GB2184627 |
Sponson launch station | 1985-12-13 | Terminated | GB2184216 |
Optical temperature sensing apparatus for sensing liquid levels | 1985-12-12 | Terminated | GB2184229 |
Radio communication apparatus | 1985-12-06 | Terminated | GB2183970 |
Frequency synthesiser | 1985-12-06 | Terminated | GB2183946 |
Power supply adaptor | 1985-12-06 | Terminated | GB2183936 |
Electronic interface circuit | 1985-12-04 | Terminated | GB2185648 |
Integrated circuit transistor and method for producing same | 1985-11-29 | Terminated | GB2186423 |
Improvements in or relating to signal connectors | 1985-11-06 | Terminated | GB2167260 |
Protection structures | 1985-10-29 | Ceased | GB2185621 |
Digital to analogue converter | 1985-10-29 | Terminated | GB2166614 |
Improvements relating to bipolar transistors | 1985-10-19 | Terminated | GB2181889 |
Improvements relating to aerially-deployed structures | 1985-10-11 | Ceased | GB2239081 |
Missile decoy systems | 1985-10-11 | Terminated | GB2181523 |
A method of detecting sound impulses | 1985-10-05 | Terminated | GB2181239 |
Automatically locating the position of a sound source | 1985-10-05 | Terminated | GB2181238 |
Electro-optical waveguide | 1985-10-02 | Terminated | GB2182158 |
Spread spectrum radio transmission detection system | 1985-09-28 | Terminated | GB2181024 |
Acoustic seal | 1985-09-21 | Ceased | GB2180722 |
Memory cells | 1985-09-04 | Terminated | GB2165410 |
Method and digital circuit for fixed coefficient serial multiplication | 1985-08-28 | Terminated | GB2179770 |
Interpolator / decimator filter structure | 1985-08-28 | Ceased | GB2179815 |
Improvements in or relating to prescalers | 1985-08-28 | Ceased | GB2179774 |
Recursive digital filter | 1985-08-28 | Ceased | GB2214021 |
A notch filter | 1985-08-28 | Ceased | GB2216741 |
Echo canceller | 1985-08-15 | Ceased | GB2164529 |
Clock signal selection and security arrangements | 1985-08-09 | Terminated | GB2178926 |
Signal generators | 1985-08-09 | Terminated | GB2178917 |
Signal conversion circuits | 1985-08-09 | Terminated | GB2218236 |
Signal conversion circuits | 1985-08-09 | Terminated | GB2178879 |
Line terminating apparatus | 1985-08-09 | Ceased | GB2178925 |
Wavelength scanning optical sensor | 1985-08-09 | Terminated | GB2181536 |
A system of matrix interconnected local area networks | 1985-08-01 | Ceased | GB2166626 |
A signal converter | 1985-07-27 | Ceased | GB2178577 |
Switching apparatus | 1985-07-05 | Terminated | GB2163308 |
Communication apparatus | 1985-07-05 | Terminated | GB2162393 |
Method and assembly for optical fibre splice protection | 1985-06-28 | Ceased | GB2177230 |
Cathode ray tube mounting assembly | 1985-06-27 | Terminated | GB2177252 |
Electrical connectors | 1985-06-07 | Terminated | GB2160145 |
Locating power source for rail vehicle | 1985-06-05 | Terminated | GB2176963 |
Underground cable detectors and methods of detecting such cables | 1985-04-19 | Ceased | GB2174203 |
Forming diffused junctions | 1985-04-19 | Terminated | GB2159662 |
Lapping jig for optical fibres | 1985-04-19 | Ceased | GB2158750 |
Digital filters | 1985-04-13 | Terminated | GB2180114 |
Repeater boxes | 1985-04-12 | Ceased | GB2173647 |
Improvements relating to electric transformers | 1985-03-29 | Ceased | GB2173956 |
Travelling-wave field-effect transistor | 1985-03-13 | Ceased | GB2156152 |
Anisotropic connectors for connecting printed circuit boards | 1985-03-06 | Terminated | GB2159007 |
Support system | 1985-02-19 | Ceased | GB2171262 |
Antenna assembly | 1985-02-12 | Terminated | GB2170958 |
Anisotropic electrical connectors | 1985-02-11 | Terminated | GB2155251 |
Frequency synthesisers | 1985-02-06 | Ceased | GB2173659 |
Logic devices | 1984-12-21 | Terminated | GB2168866 |
Pharmacologically active gamma lactones | 1984-12-04 | Ceased | GB2167744 |
Amplitude variation suppression arrangements | 1984-11-08 | Ceased | GB2151095 |
Improvements relating to contact retention arrangements | 1984-11-07 | Terminated | GB2166605 |
Optical attenuator | 1984-10-30 | Terminated | GB2166257 |
A method of making diamond heatsink assemblies | 1984-10-19 | Ceased | GB2148157 |
Improvements in or relating to diamond heatsink assemblies | 1984-10-19 | Ceased | GB2149207 |
Improvements in diamond heatsink assemblies | 1984-10-05 | Ceased | GB2147738 |
Tools for connecting wires | 1984-10-01 | Terminated | GB2147241 |
Electro-optic modulators | 1984-09-26 | Terminated | GB2147115 |
Cathode ray tube display systems | 1984-09-12 | Ceased | GB2146879 |
Improvements in diamond heatsink assemblies | 1984-09-12 | Ceased | GB2147145 |
Cathode ray tube display systems | 1984-09-12 | Ceased | GB2147179 |
Acousto optic spectrum analysers | 1984-09-04 | Ceased | GB2146766 |
Telephone conference bridge circuit arrangements | 1984-08-29 | Terminated | GB2146506 |
Logic circuits | 1984-08-23 | Ceased | GB2149603 |
Customerisation of integrated logic devices | 1984-08-22 | Terminated | GB2168840 |
Electrical connectors | 1984-08-01 | Terminated | GB2162700 |
Frequency modulation detectors | 1984-07-27 | Terminated | GB2151094 |
Distinguishing different types of movement | 1984-07-18 | Terminated | GB2144599 |
Surface acoustic wave filters | 1984-06-09 | Ceased | GB2160048 |
Adaptive line hybrid | 1984-05-25 | Ceased | GB2144304 |
Mortars | 1984-05-23 | Terminated | GB2160954 |
Monitoring condition of surface | 1984-05-15 | Ceased | GB2158939 |
Lamp monitoring apparatus | 1984-04-24 | Ceased | GB2157903 |
Improvements relating to fuel monitoring systems | 1984-04-13 | Ceased | GB2157429 |
Aircraft control | 1984-04-11 | Terminated | GB2158610 |
Through hole interconnections | 1984-03-28 | Granted | GB2156593 |
Apparatus for testing a printed circuit board | 1984-03-24 | Ceased | GB2156532 |
Diode | 1984-03-05 | Granted | GB2156148 |
Rotation measuring devices, tachometers | 1984-03-01 | Terminated | GB2155619 |
Keyboard push buttons | 1984-02-24 | Granted | GB2135827 |
Infra-red material structures | 1984-02-06 | Terminated | GB2156383 |
Isolation of input and output in an integrated injection logic device | 1984-01-31 | Terminated | GB2153588 |
Improvements relating to semiconductor injection logic devices | 1984-01-31 | Terminated | GB2153587 |
Improvements relating to variable timing and power storage arrangements | 1984-01-25 | Ceased | GB2153495 |
Improvements relating to thick film circuits | 1984-01-17 | Ceased | GB2133934 |
Radar reflector | 1984-01-12 | Terminated | GB2152758 |
Optical fibre sensing apparatus | 1984-01-11 | Granted | GB2157842 |
Interferometers | 1984-01-05 | Terminated | GB2152657 |
Optical fibre apparatus | 1983-12-22 | Granted | GB2133540 |
Movement detecting apparatus | 1983-12-22 | Terminated | GB2133541 |
Optical fibre alignment means | 1983-12-22 | Ceased | GB2139780 |
Microwave device package | 1983-12-16 | Terminated | GB2132413 |
Apparatus for checking optical fibre | 1983-12-13 | Granted | GB2151351 |
A transformer | 1983-12-08 | Ceased | GB2151083 |
Frequency synthesiser | 1983-12-02 | Terminated | GB2150775 |
Hilbert transform correction system | 1983-12-02 | Terminated | GB2150719 |
Coatings for semiconductor devices | 1983-12-02 | Ceased | GB2133928 |
Mounted integrated circuit chip carrier | 1983-11-11 | Ceased | GB2149581 |
Position detecting apparatus | 1983-11-10 | Terminated | GB2130034 |
Electric optic light shutter arrangement | 1983-10-29 | Terminated | GB2149134 |
Material handling and storage system | 1983-10-25 | Terminated | GB2130186 |
Integrated injection logic device | 1983-10-21 | Ceased | GB2130790 |
Position detecting apparatus | 1983-10-17 | Ceased | GB2130364 |
Producing narrow features in electrical devices | 1983-10-05 | Granted | GB2127751 |
Hinge assembly | 1983-09-19 | Granted | GB2128245 |
Reverse osmosis liquid filtration apparatus | 1983-09-16 | Ceased | GB2128101 |
Fsk radio receiver | 1983-09-14 | Granted | GB2146876 |
Telephone apparatus | 1983-09-05 | Granted | GB2126839 |
Power control apparatus | 1983-09-01 | Terminated | GB2129631 |
Jigs for locating electrical components | 1983-08-18 | Granted | GB2146935 |
Regulated DC power supply | 1983-08-04 | Terminated | GB2125194 |
A double superhet tuner | 1983-07-22 | Terminated | GB2143691 |
Phase lock loop circuit | 1983-07-13 | Terminated | GB2143385 |
Movement measuring apparatus | 1983-07-02 | Terminated | GB2142728 |
Dust seal | 1983-07-02 | Ceased | GB2142693 |
Improvements in bipolar transistors | 1983-06-17 | Terminated | GB2141579 |
Optical arrangements for monitoring refractive index of fluid | 1983-06-11 | Terminated | GB2141223 |
Temperature measuring arrangement | 1983-05-26 | Terminated | GB2140554 |
Vehicle mounted doppler radar system | 1983-05-19 | Ceased | GB2122834 |
Improvements relating to load trip circuits | 1983-05-14 | Terminated | GB2140634 |
Load tripping circuits | 1983-04-29 | Terminated | GB2140633 |
Integrated circuit processing method | 1983-04-06 | Terminated | GB2137808 |
Integrated circuit arrangement | 1983-03-24 | Granted | GB2137411 |
Improvements in or Relating to Sonar Apparatus | 1983-03-01 | Terminated | GB2136124 |
Switched mode power supplies | 1983-03-01 | Terminated | GB2136222 |
Supporting assembly | 1983-02-16 | Granted | GB2115479 |
Turntable assemblies | 1983-02-16 | Granted | GB2115502 |
Carbon fibre reinforced composite materials | 1983-02-09 | Granted | GB2116076 |
Fibre optic light switch | 1983-01-07 | Terminated | GB2133137 |
Electro-acoustic transducers | 1982-12-14 | Granted | GB2113503 |
Positioning an optical fibre relative to an opto-electronic device | 1982-12-14 | Granted | GB2131971 |
Frequency hopping code synchroniser | 1982-12-10 | Terminated | GB2132453 |
Logarithmic amplifier | 1982-12-06 | Terminated | GB2112242 |
Switching circuit | 1982-12-01 | Granted | GB2131640 |
Intra-hop synchroniser | 1982-12-01 | Terminated | GB2132450 |
A method of sealing a joint | 1982-12-01 | Terminated | GB2115084 |
Improvements in or relating to radio communication systems | 1982-11-25 | Terminated | GB2111352 |
A pressure loaded gear pump | 1982-11-25 | Ceased | GB2131091 |
Liquid spray apparatus | 1982-10-26 | Granted | GB2108869 |
Improvements relating to optical detecting monitoring or measuring arrangements | 1982-10-23 | Terminated | GB2129930 |
A switching arrangement | 1982-09-30 | Terminated | GB2128007 |
Connector arrangements | 1982-09-30 | Granted | GB2107417 |
Improvements relating to acoustic wave sensing arrangements | 1982-09-17 | Ceased | GB2127168 |
Material handling and sorting system | 1982-08-18 | Ceased | GB2110448 |
Improved local area network systems | 1982-08-04 | Granted | GB2125257 |
An aircraft having launcher means | 1982-07-30 | Ceased | GB2124570 |
Photochromic materials | 1982-07-27 | Terminated | GB2104539 |
Frequency synthesiser | 1982-07-10 | Terminated | GB2124047 |
Keyboards for electrical apparatus | 1982-07-06 | Terminated | GB2103882 |
Electro-magnetic radiation detecting devices | 1982-07-01 | Granted | GB2103421 |
Improvements relating to electrical transformers | 1982-06-28 | Ceased | GB2100935 |
Improvements relating to power control circuits | 1982-06-28 | Ceased | GB2103444 |
Electrically conductive joint | 1982-06-23 | Granted | GB2104315 |
Improvements in or relating to detector arrays coupled to a ccd | 1982-06-22 | Ceased | GB2103010 |
Improvements in or relating to integrated light detection or generation means and amplifying means | 1982-06-01 | Ceased | GB2101807 |
Interdigital transducer | 1982-05-25 | Granted | GB2120891 |
Electric push button switch | 1982-05-13 | Granted | GB2100517 |
Electrical device package | 1982-05-10 | Granted | GB2100521 |
Optical apparatus | 1982-04-29 | Granted | GB2098352 |
Electro-optic light shutters | 1982-04-24 | Terminated | GB2135471 |
Spraying crops | 1982-04-13 | Granted | GB2118011 |
Mains power measurement | 1982-04-13 | Ceased | GB2118726 |
Liquid spray apparatus | 1982-04-13 | Granted | GB2118460 |
Electrical connectors having improved resistance to electrical breakdown | 1982-04-03 | Terminated | GB2119178 |
Chaff | 1982-03-31 | Granted | GB2112214 |
Fluid flow control valves | 1982-03-26 | Granted | GB2117491 |
Digital amplitude modulator | 1982-03-26 | Terminated | GB2118384 |
Optical fibre connection device comprising a retroreflector | 1982-03-22 | Ceased | GB2099175 |
Signal generator arrangement | 1982-03-17 | Ceased | GB2118389 |
Automatic control of manufacture and testing | 1982-03-06 | Terminated | GB2116748 |
Valves | 1982-02-24 | Granted | GB2115525 |
Gear pumps | 1982-02-24 | Granted | GB2115875 |
Improvements in or relating to cable retaining means | 1982-02-24 | Granted | GB2096839 |
Optical fibre acoustic array | 1982-02-23 | Granted | GB2115171 |
Improvements in or relating to equipment housings | 1982-02-09 | Ceased | GB2114981 |
Vehicle park counting equipment | 1982-01-25 | Terminated | GB2114338 |
Moulding articles with inserts | 1981-12-24 | Granted | GB2112316 |
Non-contact signal pickup arrangements | 1981-12-22 | Terminated | GB2090986 |
Electrical connectors for use in telecommunications equipment | 1981-12-16 | Ceased | GB2112216 |
V.f. receivers for use in digital switching systems | 1981-11-12 | Ceased | GB2111348 |
Plastics encapsulated electronic devices | 1981-10-28 | Ceased | GB2087159 |
Acousto-electric transducer | 1981-10-15 | Ceased | GB2107546 |
Valves | 1981-10-15 | Terminated | GB2107827 |
Electro-acoustic transducer | 1981-10-10 | Terminated | GB2107545 |
Controllable oscillator | 1981-10-07 | Terminated | GB2090091 |
Surface acoustic waveguide | 1981-10-07 | Terminated | GB2091059 |
Aerial apparatus | 1981-10-05 | Terminated | GB2109637 |
A rotary positive-displacement pump | 1981-09-28 | Ceased | GB2086480 |
A self-erecting waveguide antenna | 1981-09-22 | Ceased | GB2106717 |
Position detecting apparatus | 1981-09-11 | Terminated | GB2084416 |
Beam steering saw transducer | 1981-09-09 | Granted | GB2110495 |
Improvements in or relating to assemblies with a movable part | 1981-08-21 | Granted | GB2104144 |
Improvements in or relating to piezoelectric transducers | 1981-08-15 | Granted | GB2106346 |
Composite materials | 1981-08-11 | Ceased | GB2205275 |
A switching circuit | 1981-07-16 | Terminated | GB2105927 |
A pulse drive circuit | 1981-07-16 | Terminated | GB2102230 |
Electromagnetic reed relays for mounting on printed circuit boards | 1981-07-14 | Terminated | GB2103015 |
Switch apparatus | 1981-07-11 | Ceased | GB2101771 |
Fasteners for a hollow body | 1981-06-12 | Granted | GB2101191 |
Cash boxes | 1981-06-09 | Terminated | GB2079846 |
Testing coins | 1981-06-08 | Ceased | GB2078420 |
A frequency measurement circuit | 1981-05-07 | Ceased | GB2098418 |
Cable mounting and guiding arrangements | 1981-03-21 | Granted | GB2095199 |
Triply redundant microprocessor system | 1981-02-19 | Ceased | GB2093614 |
Machine tool drawbar | 1981-02-13 | Ceased | GB2092922 |
Intermetallic connector contact finishes | 1981-01-30 | Terminated | GB2069005 |
Terminations for clad optical fibres | 1981-01-28 | Terminated | GB2068142 |
Manufacture of carrier strip for electrical contact members | 1981-01-16 | Granted | GB2069377 |
Aircraft engine emergency fuel system | 1981-01-09 | Ceased | GB2068054 |
Optical Spectrum Analyser | 1980-12-04 | Ceased | GB2089496 |
Analogue-to-digital converter | 1980-12-03 | Granted | GB2082410 |
P.C.M. frame aligner with frame slip characteristic | 1980-11-27 | Ceased | GB2066627 |
Improvements in or relating to signal selection systems | 1980-11-27 | Granted | GB2089172 |
Conveyor systems with reduced speed of receptacles at loading stations | 1980-10-25 | Ceased | GB2085830 |
Electro-optic switching device using the pyroelectric effect | 1980-10-23 | Granted | GB2086072 |
Drive mechanism for tape cassette | 1980-10-23 | Terminated | GB2067164 |
Improvements in or relating to separating means for separating two connected components | 1980-10-13 | Terminated | GB2085671 |
Machine for producing pleated capacitors | 1980-09-24 | Terminated | GB2084626 |
Electrical conductor terminating structures | 1980-09-24 | Granted | GB2085240 |
Ultrasonic reflectors | 1980-09-10 | Terminated | GB2083989 |
Timing recovery for modems | 1980-09-04 | Ceased | GB2061069 |
Improvements in or relating to transversal equalisers | 1980-09-04 | Ceased | GB2071468 |
Arrangements for data timing recovery from distorted signals for use in adaptive modems with multi-level coding | 1980-09-04 | Ceased | GB2061041 |
Zero-crossing comparator with threshold validation | 1980-09-04 | Granted | GB2059725 |
Digitally controlled wide range automatic gain control | 1980-09-04 | Ceased | GB2059202 |
Improvements in or relating to optical display devices | 1980-09-02 | Terminated | GB2083650 |
Improvements Relating to Timing Circuits | 1980-08-21 | Ceased | GB2082862 |
Improvements in or relating to furnaces for producing semiconductor materials | 1980-08-20 | Terminated | GB2082879 |
Vibrating cutter for optical fibres | 1980-08-20 | Granted | GB2082565 |
Time division multiplex module for use in digital switching network | 1980-07-31 | Terminated | GB2105551 |
Method of Validating Data Stored in Read-Only Memories | 1980-07-26 | Terminated | GB2062309 |
Logic circuit arrangement | 1980-07-23 | Terminated | GB2081041 |
Apparatus for placing apertured solder preforms onto pins of electrical connectors | 1980-07-18 | Granted | GB2080262 |
Improvements in or relating to telephone handsets | 1980-07-11 | Granted | GB2056221 |
Improvements in or relating to control lever arrangements | 1980-07-07 | Granted | GB2054237 |
Telephone apparatus | 1980-07-07 | Granted | GB2055019 |
Cover assemblies for electrical devices | 1980-07-07 | Granted | GB2054968 |
Improvements in or relating to bells | 1980-06-10 | Granted | GB2078425 |
Telecommunications line circuit | 1980-05-23 | Granted | GB2055274 |
Bell assembly | 1980-04-09 | Granted | GB2073931 |
Remote switch monitoring circuit for mining | 1980-03-28 | Granted | GB2073434 |
Semiconductor memory element | 1980-03-19 | Ceased | GB2072417 |
Improvements in or relating to retaining means for elongate members | 1980-03-14 | Granted | GB2071927 |
Filter arrangement | 1980-02-19 | Terminated | GB2071958 |
Push button key modules | 1980-02-13 | Granted | GB2077498 |
Improvements relating to the measurement of temperature | 1980-02-08 | Terminated | GB2045921 |
Optical cable gland | 1980-02-01 | Granted | GB2043943 |
Epitaxial growth of garnet films | 1980-01-28 | Terminated | GB2060431 |
Programmable timed control arrangements | 1980-01-24 | Terminated | GB2069192 |
Parameter controller | 1980-01-24 | Terminated | GB2068596 |
Signal monitoring circuit | 1980-01-16 | Ceased | GB2045949 |
Improvements in or Relating to Digital Filters | 1980-01-12 | Terminated | GB2067799 |
Acousto-optic deflector | 1980-01-11 | Terminated | GB2069167 |
Improvements in or relating to spectrum analysers | 1980-01-11 | Terminated | GB2067743 |
Improvements in or Relating to Spectrum Analysers | 1980-01-11 | Terminated | GB2067745 |
Digital conference circuits | 1979-12-24 | Granted | GB2040643 |
Asynchronus receiver for a spread spectrum communication system | 1979-12-21 | Granted | GB2040143 |
Improvements in or relating to hybrid semiconductor devices | 1979-12-20 | Ceased | GB2039443 |
>Focus indicator | 1979-12-14 | Ceased | GB2066014 |
Improvements relating to air filters | 1979-11-16 | Terminated | GB2063095 |
Codecs | 1979-11-14 | Ceased | GB2040619 |
Measuring Clearance Gap Between Turbine Blades and Surrounding Duct | 1979-11-14 | Terminated | GB2063477 |
Improvements in or Relating to Electric Bells | 1979-11-08 | Terminated | GB2062332 |
Acoustic transducer production for telephones | 1979-10-20 | Granted | GB2062405 |
Memory protection system using capability registers | 1979-09-29 | Ceased | GB2059652 |
Data processing system including internal register addressing arrangements | 1979-09-29 | Ceased | GB2062912 |
Control of fuel/air ratio in i.c. engines | 1979-09-15 | Terminated | GB2059116 |
Improvements in or relating to phase sequence indicators | 1979-09-13 | Terminated | GB2059078 |
Semiconductor memory device | 1979-09-13 | Terminated | GB2058451 |
Fuel injector for an engine | 1979-09-11 | Granted | GB2058210 |
Method of producing a fuel injector for an engine | 1979-09-11 | Granted | GB2058209 |
Amplifiers | 1979-08-31 | Terminated | GB2057803 |
Push button switches | 1979-08-31 | Terminated | GB2057767 |
Laser treatment of semiconductor material | 1979-08-30 | Terminated | GB2030766 |
Vehicle speed detectors | 1979-08-10 | Ceased | GB2031683 |
Field effect structure | 1979-07-26 | Terminated | GB2028582 |
Method of routining parity checking circuits | 1979-07-18 | Ceased | GB2054326 |
Scanning Beam Deflection Amplifier | 1979-07-10 | Terminated | GB2053505 |
A transistorised inverter | 1979-07-10 | Terminated | GB2025166 |
Improvements in or relating to bell assemblies | 1979-07-02 | Ceased | GB2063545 |
Demodulators | 1979-06-27 | Terminated | GB2052196 |
Improvements in or Relating to Couplings | 1979-06-15 | Granted | GB2051279 |
Directional arrays | 1979-06-04 | Ceased | GB2023940 |
A liquid control system | 1979-05-31 | Terminated | GB2049999 |
Rf power indicating arrangement | 1979-05-25 | Ceased | GB2050631 |
Improvements in or relating to frequency modulators | 1979-05-24 | Ceased | GB2019145 |
Vibratory atomiser | 1979-05-11 | Granted | GB2024048 |
Boiler control systems | 1979-05-04 | Granted | GB2036291 |
Fuel injector | 1979-05-03 | Granted | GB2023724 |
Optical fibre connectors | 1979-05-02 | Granted | GB2048507 |
Methods of and apparatus for joining glass objects | 1979-04-27 | Granted | GB2019387 |
Methods of producing semiconductor materials | 1979-04-09 | Granted | GB2055774 |
A record player having an automatic record changing facility incorporating manual programming apparatus | 1979-03-28 | Terminated | GB2021842 |
A record player having a trip mechanism | 1979-03-23 | Terminated | GB2020083 |
Measurement of acoustic impedance | 1979-03-19 | Granted | GB2020024 |
Apparatus to supply air and oxygen | 1979-03-06 | Ceased | GB2019042 |
Rolling diaphragms | 1979-03-03 | Granted | GB2043831 |
Radar systems | 1979-02-26 | Terminated | GB2029150 |
Improved method of signalling supervisory information in digital line transmission systems | 1979-02-21 | Granted | GB2016247 |
Improvements in motor- uniselector arrangements | 1979-02-16 | Granted | GB2020112 |
Detection of anomalies near a bore | 1979-02-15 | Terminated | GB2042302 |
Detection of anomalies near a bore | 1979-02-10 | Terminated | GB2042301 |
Magnetic domain device | 1979-02-10 | Terminated | GB2042293 |
Encapsulating a Magnetic Domain Component | 1979-02-10 | Terminated | GB2041818 |
Carbon Fibre Reinforced Composite Materials | 1979-02-06 | Ceased | GB2041342 |
Aerial systems | 1979-02-06 | Terminated | GB2042808 |
Improvements in or relating to aluminium oxide films for capacitors | 1979-02-06 | Terminated | GB2041647 |
Frequency synthesis control system | 1979-02-05 | Granted | GB2015837 |
Improvements in or relating to sealing optical fibres into packages. | 1979-01-26 | Granted | GB2022280 |
Illumination apparatus | 1979-01-26 | Ceased | GB2013323 |
A Variable Displacement Pump | 1979-01-23 | Terminated | GB2040508 |
Coupling Optical Fibres | 1979-01-17 | Ceased | GB2019028 |
A two or four pole A.C. motor | 1979-01-17 | Terminated | GB2013986 |
Improvements in error correction devices | 1979-01-15 | Ceased | GB2013002 |
Improvements in or relating to optical detecting arrangements | 1979-01-15 | Terminated | GB2013332 |
Storage cabinets | 1979-01-08 | Granted | GB2041726 |
Dial units for telephone sets | 1979-01-08 | Terminated | GB2048015 |
Heterostructure field effect transistors | 1979-01-04 | Terminated | GB2012480 |
Line current feed and hybrid arrangement (system X) | 1978-12-30 | Granted | GB2042848 |
Balance on 2-4 wire hybrid circuits | 1978-12-30 | Granted | GB2041700 |
Real-time data processing system for processing time period commands | 1978-12-22 | Ceased | GB2030331 |
Low pressure fuel injection system | 1978-12-20 | Granted | GB2012357 |
Optical fibre connectors | 1978-12-16 | Granted | GB2039074 |
Improvements Relating to Electric Terminal Members | 1978-12-08 | Terminated | GB2037494 |
Improvements in or relating to magnetic domain devices | 1978-12-08 | Terminated | GB2011744 |
Open-phase detector | 1978-11-30 | Granted | GB2035728 |
Improvements in or relating to packaging arrangements | 1978-11-30 | Terminated | GB2011727 |
Optical positioning apparatus | 1978-11-29 | Ceased | GB2035595 |
Push button switch | 1978-11-17 | Terminated | GB2023933 |
Improvements in or Relating to Electro-optic Modulators | 1978-11-17 | Terminated | GB2008786 |
Holographic Data Store | 1978-11-17 | Terminated | GB2008790 |
Power amplifier arrangement | 1978-11-15 | Terminated | GB2011741 |
Frequency synthesizer | 1978-11-15 | Ceased | GB2015277 |
Analogui-to-digital converters | 1978-11-10 | Ceased | GB2007052 |
Motor Speed Detector | 1978-11-03 | Terminated | GB2008768 |
Bell volume control | 1978-11-02 | Granted | GB2033640 |
Synthesis arrangements for use in digital data transmission systems | 1978-10-30 | Ceased | GB2011223 |
Electromagnetic hinged armature devices | 1978-10-27 | Granted | GB2007915 |
Television receiver IF and detector arrangement | 1978-10-27 | Terminated | GB2009546 |
Optical fibre switches | 1978-10-14 | Granted | GB2031603 |
Circuit arrangement | 1978-10-13 | Ceased | GB2007055 |
Selectively displaying a two- dimensional configuration | 1978-10-11 | Terminated | GB2031209 |
Optical fibre connector | 1978-10-10 | Ceased | GB2005047 |
Fluid pressure operated piezoelectric generators | 1978-10-02 | Granted | GB2010597 |
Surface acoustic wave filters | 1978-09-25 | Ceased | GB2030411 |
Hydraulic variable displacement axial piston pump having torque limiation | 1978-09-20 | Granted | GB2008804 |
Improvements in or relating to display arrangements | 1978-09-19 | Terminated | GB2011765 |
Improvements in or relating to memory systems | 1978-09-19 | Terminated | GB2011666 |
Receiver arrangement | 1978-09-15 | Ceased | GB2030018 |
Gear pump | 1978-09-15 | Granted | GB2029902 |
Improvements relating to circuit protection arrangement | 1978-09-06 | Terminated | GB2034134 |
Receiver circuit arrangement | 1978-09-04 | Ceased | GB2004428 |
Deposition of material on a substrate | 1978-08-17 | Terminated | GB2003660 |
Manufacturing field effect transistors | 1978-08-17 | Terminated | GB2005913 |
Article dispensers | 1978-08-05 | Granted | GB2026984 |
Field effect transistor | 1978-08-03 | Terminated | GB2003658 |
Improvements in or relating to holographic data storage systems | 1978-07-31 | Terminated | GB2002919 |
Improvements in or relating to suppressor circuits | 1978-07-25 | Terminated | GB2005966 |
Improvement in or relating to detector arrangements | 1978-07-25 | Terminated | GB2003368 |
Guide systems | 1978-07-19 | Terminated | GB2001923 |
Aerial systems | 1978-07-12 | Granted | GB2001804 |
Technique for embedding pressure-sensitive cables in a road surface to minimise mechanical resonance | 1978-07-06 | Ceased | GB2003635 |
Prisms | 1978-06-29 | Terminated | GB2001775 |
Radiation detectors | 1978-06-29 | Granted | GB2001750 |
A fluid cooled heat exchanger system | 1978-06-20 | Terminated | GB2039360 |
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