Assignee
EMI PLC THORN
GB·131 granted patents·5,426 citations·filing 1982–1995
Top patents by PatentIndex Score
131 records- 0199US5193015ACholesteric liquid crystal screen which reflects substantially all of the projected lightEMI PLC THORN·Filed 1990·Granted Mar 9, 1993·176 cites·3 claims
- 0296US5122791ADisplay device incorporating brightness control and a method of operating such a displayEMI PLC THORN·Filed 1987·Granted Jun 16, 1992·208 cites·10 claims
- 0396US4764797AChemical-sensitive semiconductor deviceEMI PLC THORN·Filed 1986·Granted Aug 16, 1988·185 cites·12 claims
- 0495US5113437ASignal identification systemEMI PLC THORN·Filed 1989·Granted May 12, 1992·465 cites·10 claims
- 0594US5079648AMarked recorded signalsEMI PLC THORN·Filed 1989·Granted Jan 7, 1992·296 cites·5 claims
- 0694US4876617ASignal identificationEMI PLC THORN·Filed 1987·Granted Oct 24, 1989·362 cites·4 claims
- 0793US5206145AMethod of measuring the concentration of a substance in a sample solutionEMI PLC THORN·Filed 1991·Granted Apr 27, 1993·263 cites·6 claims
- 0893US5177341AThick film electrically resistive tracksEMI PLC THORN·Filed 1988·Granted Jan 5, 1993·82 cites·20 claims
- 0992US5093652ADisplay deviceEMI PLC THORN·Filed 1991·Granted Mar 3, 1992·139 cites·9 claims
- 1092US5086258ADischarge tube arrangementEMI PLC THORN·Filed 1990·Granted Feb 4, 1992·92 cites·7 claims
- 1192US5064618ASensor arrangementsEMI PLC THORN·Filed 1988·Granted Nov 12, 1991·163 cites·7 claims
- 1291US5072157AExcitation device suitable for exciting surface waves in a discharge tubeEMI PLC THORN·Filed 1989·Granted Dec 10, 1991·111 cites·5 claims
- 1391US4965415AMicroengineered diaphragm pressure switchEMI PLC THORN·Filed 1989·Granted Oct 23, 1990·78 cites·6 claims
- 1490US4710677AIncandescent lampsEMI PLC THORN·Filed 1984·Granted Dec 1, 1987·61 cites·6 claims
- 1588US4995719AMethod of and an apparatus for projecting a scanned two- or three-dimensional modulated light pattern originating from a light sourceEMI PLC THORN·Filed 1989·Granted Feb 26, 1991·63 cites·22 claims
- 1688US4507584ADischarge lamp with metal coil electrode support inserted into cermet end capEMI PLC THORN·Filed 1982·Granted Mar 26, 1985·46 cites·12 claims
- 1787US4864290ADisplay deviceEMI PLC THORN·Filed 1987·Granted Sep 5, 1989·68 cites·10 claims
- 1886US5619586AMethod and apparatus for producing a directly viewable image of a fingerprintEMI PLC THORN·Filed 1995·Granted Apr 8, 1997·170 cites·10 claims
- 1986US5459598AOptical modulation device with liquid crystal voids formed by the spacer arrangementsEMI PLC THORN·Filed 1993·Granted Oct 17, 1995·90 cites·5 claims
- 2086US5143438ALight sourcesEMI PLC THORN·Filed 1991·Granted Sep 1, 1992·71 cites·11 claims
- 2186US5124695ADisplay deviceEMI PLC THORN·Filed 1990·Granted Jun 23, 1992·86 cites·5 claims
- 2285US4978814AElectrical device including an electrical connectorEMI PLC THORN·Filed 1989·Granted Dec 18, 1990·58 cites·6 claims
- 2384US4958165ACircular polarization antennaEMI PLC THORN·Filed 1988·Granted Sep 18, 1990·79 cites·2 claims
- 2484US4859835AElectrically resistive tracksEMI PLC THORN·Filed 1988·Granted Aug 22, 1989·44 cites·19 claims
- 2583US5764411AApparatus for displaying an imageEMI PLC THORN·Filed 1993·Granted Jun 9, 1998·55 cites·2 claims
- 2683US4931851AGas sensitive deviceEMI PLC THORN·Filed 1987·Granted Jun 5, 1990·74 cites·11 claims
- 2782US4983810AHeating unit with thermochromic regionEMI PLC THORN·Filed 1988·Granted Jan 8, 1991·40 cites·8 claims
- 2882US4890480ARelating to devices for measuring fluid densityEMI PLC THORN·Filed 1988·Granted Jan 2, 1990·45 cites·6 claims
- 2981US5233338ADisplay devices having color sequential illuminationEMI PLC THORN·Filed 1991·Granted Aug 3, 1993·66 cites·18 claims
- 3081US5122944AMounting arrangement for a lamp fittingEMI PLC THORN·Filed 1990·Granted Jun 16, 1992·47 cites·10 claims
- 3181US4943126AReplication of carriers bearing digitally recorded informationEMI PLC THORN·Filed 1989·Granted Jul 24, 1990·58 cites·8 claims
- 3281US4815067AOptical rotary headwheel tape recording systemEMI PLC THORN·Filed 1987·Granted Mar 21, 1989·34 cites·13 claims
- 3379US5039207ALiquid crystal display device with prismatic light transmitting memberEMI PLC THORN·Filed 1989·Granted Aug 13, 1991·46 cites·10 claims
- 3479US4969732ADisplay deviceEMI PLC THORN·Filed 1989·Granted Nov 13, 1990·51 cites·7 claims
- 3578US5189406ADisplay deviceEMI PLC THORN·Filed 1991·Granted Feb 23, 1993·70 cites·26 claims
- 3678US4924308ABandwidth reduction system for television signalsEMI PLC THORN·Filed 1989·Granted May 8, 1990·68 cites·4 claims
- 3778US4458301ADischarge lamps with curved sections and central connectionsEMI PLC THORN·Filed 1982·Granted Jul 3, 1984·33 cites·23 claims
- 3876US5076203ACoating apparatus for thin plastics websEMI PLC THORN·Filed 1990·Granted Dec 31, 1991·51 cites·11 claims
- 3976US4910432ACeramic metal halide lampsEMI PLC THORN·Filed 1988·Granted Mar 20, 1990·31 cites·8 claims
- 4074US4808882AHigh pressure discharge lamp with overhung end arc tube and cermet endsEMI PLC THORN·Filed 1986·Granted Feb 28, 1989·22 cites·15 claims
- 4174US4739219AElectric lamp with pinch sealed outer conductor of non-highly refractory materialEMI PLC THORN·Filed 1987·Granted Apr 19, 1988·18 cites·19 claims
- 4272US5162658AThermal detection arrangement having a plurality of optical filter devicesEMI PLC THORN·Filed 1991·Granted Nov 10, 1992·37 cites·20 claims
- 4371USD306765SLampEMI PLC THORN·Filed 1987·Granted Mar 20, 1990·15 cites·1 claims
- 4471US4450509ALanterns for area lightingEMI PLC THORN·Filed 1982·Granted May 22, 1984·44 cites·19 claims
- 4570US4904090ATemperature sensing arrangementEMI PLC THORN·Filed 1987·Granted Feb 27, 1990·30 cites·7 claims
- 4670US4598194AQuartz infra-red lampsEMI PLC THORN·Filed 1985·Granted Jul 1, 1986·28 cites·5 claims
- 4767US5633947AMethod and apparatus for fingerprint characterization and recognition using auto correlation patternEMI PLC THORN·Filed 1994·Granted May 27, 1997·50 cites·18 claims
- 4867US5099174AArc tube for a discharge lampEMI PLC THORN·Filed 1989·Granted Mar 24, 1992·21 cites·13 claims
- 4967US5028847ALauncher suitable for exciting surface waves in a discharge tubeEMI PLC THORN·Filed 1989·Granted Jul 2, 1991·17 cites·13 claims
- 5067US4549251ADischarge lampsEMI PLC THORN·Filed 1983·Granted Oct 22, 1985·21 cites·15 claims
Showing the top 50 of 131 patent records by PatentIndex Score.
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