Assignee
BRITISH GAS CORP
GB·137 granted patents·3,746 citations·filing 1973–1993
Top patents by PatentIndex Score
137 records- 0196US4105972APipeline inspection vehicle for detecting defects in pipeline wallsBRITISH GAS CORP·Filed 1977·Granted Aug 8, 1978·159 cites·9 claims
- 0295US4400182AVaporization and gasification of hydrocarbon feedstocksBRITISH GAS CORP·Filed 1982·Granted Aug 23, 1983·190 cites·2 claims
- 0393US4738565AMethod of replacing mainsBRITISH GAS CORP·Filed 1986·Granted Apr 19, 1988·107 cites·49 claims
- 0493US4674914AReplacing mainsBRITISH GAS CORP·Filed 1985·Granted Jun 23, 1987·147 cites·10 claims
- 0593US4505302AReplacement of mainsBRITISH GAS CORP·Filed 1983·Granted Mar 19, 1985·77 cites·10 claims
- 0693US4104201ACatalytic steam reforming and catalysts thereforBRITISH GAS CORP·Filed 1976·Granted Aug 1, 1978·86 cites·7 claims
- 0792US4133825AProduction of substitute natural gasBRITISH GAS CORP·Filed 1977·Granted Jan 9, 1979·357 cites·14 claims
- 0891US4417905AGas makingBRITISH GAS CORP·Filed 1980·Granted Nov 29, 1983·41 cites·15 claims
- 0990US4720211AApparatus for replacing mainsBRITISH GAS CORP·Filed 1986·Granted Jan 19, 1988·79 cites·36 claims
- 1089US4582551ASealing joints and leaks with an anaerobic liquidBRITISH GAS CORP·Filed 1984·Granted Apr 15, 1986·57 cites·9 claims
- 1189USD282350SPortable receiver unit for a metallic object detectorBRITISH GAS CORP·Filed 1983·Granted Jan 28, 1986·30 cites·1 claims
- 1289USD282246SPortable transmitter unit for a metallic object detectorBRITISH GAS CORP·Filed 1983·Granted Jan 21, 1986·31 cites·1 claims
- 1389US4127393AMethod and apparatus for vaporizing hydrocarbon based liquidsBRITISH GAS CORP·Filed 1977·Granted Nov 28, 1978·57 cites·9 claims
- 1487US3930324AMechanical excavating machines including rotary cutter and suction tubeBRITISH GAS CORP·Filed 1974·Granted Jan 6, 1976·61 cites·10 claims
- 1586US4113050AFluid-flow noise reduction systemsBRITISH GAS CORP·Filed 1976·Granted Sep 12, 1978·45 cites·8 claims
- 1685US4729883AAcid gas removal processBRITISH GAS CORP·Filed 1986·Granted Mar 8, 1988·55 cites·7 claims
- 1785US4447777AMagnetic pipeline inspection vehicle with metallic foil and bristle contacts supporting the vehicleBRITISH GAS CORP·Filed 1980·Granted May 8, 1984·55 cites·26 claims
- 1885US4295095AApparatus and method for detecting the location of metallic objects having alternating current passing therethroughBRITISH GAS CORP·Filed 1979·Granted Oct 13, 1981·50 cites·16 claims
- 1984US4653782APipe repair clampBRITISH GAS CORP·Filed 1986·Granted Mar 31, 1987·72 cites·2 claims
- 2084US4491566AAutomatic CO2 removal system and operation thereofBRITISH GAS CORP·Filed 1982·Granted Jan 1, 1985·48 cites·38 claims
- 2183US4728897AMicrowave reflection survey technique for determining depth and orientation of buried objectsBRITISH GAS CORP·Filed 1987·Granted Mar 1, 1988·56 cites·6 claims
- 2283US4646575AUltrasonic flowmeterBRITISH GAS CORP·Filed 1986·Granted Mar 3, 1987·66 cites·21 claims
- 2381US4315407AGas storage and transmission systemsBRITISH GAS CORP·Filed 1980·Granted Feb 16, 1982·53 cites·4 claims
- 2481US4173886AGas detectorsBRITISH GAS CORP·Filed 1978·Granted Nov 13, 1979·44 cites·9 claims
- 2580US4285243AUltrasonic pipe inspection apparatusBRITISH GAS CORP·Filed 1979·Granted Aug 25, 1981·43 cites·10 claims
- 2680US4073627ACoal gasification plantBRITISH GAS CORP·Filed 1976·Granted Feb 14, 1978·21 cites·9 claims
- 2778US4627471ASealing joints and leaksBRITISH GAS CORP·Filed 1985·Granted Dec 9, 1986·39 cites·2 claims
- 2878US4310796AMagnet assemblies with plural metallic foil contact members for pipeline inspection vehiclesBRITISH GAS CORP·Filed 1979·Granted Jan 12, 1982·27 cites·15 claims
- 2977US4590799APipeline pig trackingBRITISH GAS CORP·Filed 1984·Granted May 27, 1986·36 cites·8 claims
- 3077US4302976AWheel probesBRITISH GAS CORP·Filed 1979·Granted Dec 1, 1981·35 cites·9 claims
- 3177US4107605AEddy current flaw detector utilizing plural sets of four planar coils, with the plural sets disposed in a common bridgeBRITISH GAS CORP·Filed 1976·Granted Aug 15, 1978·44 cites·2 claims
- 3276US4857851AFixing a geographical reference of a vehicle traveling through a pipelineBRITISH GAS CORP·Filed 1985·Granted Aug 15, 1989·49 cites·24 claims
- 3376US4746867AAntenna assembly for microwave reflection survey equipmentBRITISH GAS CORP·Filed 1985·Granted May 24, 1988·45 cites·6 claims
- 3476US4105591AMethod of preparing and filtering coprecipitated nickel-alumina catalystsBRITISH GAS CORP·Filed 1976·Granted Aug 8, 1978·19 cites·11 claims
- 3576US4098126ANon-destructive testing of pipelineBRITISH GAS CORP·Filed 1977·Granted Jul 4, 1978·33 cites·5 claims
- 3676US4071329ACoal gasification plantBRITISH GAS CORP·Filed 1976·Granted Jan 31, 1978·20 cites·14 claims
- 3775US4468619ANon-destructive detection of the surface properties of ferromagnetic materialsBRITISH GAS CORP·Filed 1982·Granted Aug 28, 1984·41 cites·7 claims
- 3875US4414633AData processing and recording apparatusBRITISH GAS CORP·Filed 1981·Granted Nov 8, 1983·29 cites·3 claims
- 3974US4693404AMains bursting toolBRITISH GAS CORP·Filed 1985·Granted Sep 15, 1987·41 cites·8 claims
- 4074US4481816APipeline gauging vehiclesBRITISH GAS CORP·Filed 1983·Granted Nov 13, 1984·23 cites·12 claims
- 4174US4119115AStopping fluid flow in pipesBRITISH GAS CORP·Filed 1977·Granted Oct 10, 1978·26 cites·5 claims
- 4273US4129422ACoal gasification plantBRITISH GAS CORP·Filed 1977·Granted Dec 12, 1978·18 cites·7 claims
- 4372US4202216AUltrasonic testingBRITISH GAS CORP·Filed 1978·Granted May 13, 1980·29 cites·10 claims
- 4471US4170902APipeline inspection vehiclesBRITISH GAS CORP·Filed 1978·Granted Oct 16, 1979·32 cites·8 claims
- 4570US4530347AGas-fired water heatersBRITISH GAS CORP·Filed 1984·Granted Jul 23, 1985·27 cites·11 claims
- 4670US4185967AProcess for the production of methane-containing gases and catalyst used in processBRITISH GAS CORP·Filed 1978·Granted Jan 29, 1980·17 cites·14 claims
- 4769US4643855ASealing joints and leaksBRITISH GAS CORP·Filed 1984·Granted Feb 17, 1987·25 cites·3 claims
- 4869US4216123ACatalyst for steam reforming of hydrocarbonsBRITISH GAS CORP·Filed 1978·Granted Aug 5, 1980·16 cites·8 claims
- 4968US4014316ASystems for heating fluidsBRITISH GAS CORP·Filed 1975·Granted Mar 29, 1977·22 cites·2 claims
- 5067US4658803AGas-fired water heatersBRITISH GAS CORP·Filed 1985·Granted Apr 21, 1987·27 cites·7 claims
Showing the top 50 of 137 patent records by PatentIndex Score.
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