Inventor · disambiguated record
John M. Davenport
Also filed as: DAVENPORT JOHN · DAVENPORT JOHN M · DAVENPORT JOHN MARTIN
120 granted patents·8 pending applications·3,864 citations·filing 1975–2021
99Inventor score
Top patents by PatentIndex Score
128 records- 0199US6294800B1Phosphors for white light generation from UV emitting diodesGEN ELECTRIC·Filed 1998·Granted Sep 25, 2001·382 cites·33 claims
- 0295US5526237ALighting system for increasing brightness to a light guideGEN ELECTRIC·Filed 1993·Granted Jun 11, 1996·145 cites·10 claims
- 0395US5278731AFiber optic lighting system using conventional headlamp structuresGEN ELECTRIC·Filed 1992·Granted Jan 11, 1994·102 cites·16 claims
- 0495US5101325AUniform illumination of large, thin surfaces particularly suited for automotive applicationsGEN ELECTRIC·Filed 1990·Granted Mar 31, 1992·109 cites·19 claims
- 0595US4811172ALighting systems employing optical fibersGEN ELECTRIC·Filed 1987·Granted Mar 7, 1989·112 cites·42 claims
- 0694US5023758ASingle arc discharge headlamp with light switch for high/low beam operationGEN ELECTRIC·Filed 1989·Granted Jun 11, 1991·62 cites·17 claims
- 0793US7549783B2Efficient luminaire with directional side-light extractionENERGY FOCUS INC·Filed 2006·Granted Jun 23, 2009·42 cites·13 claims
- 0893US5896004ADouble ended quartz lamp with end bend controlGEN ELECTRIC·Filed 1998·Granted Apr 20, 1999·91 cites·19 claims
- 0992US4935668AMetal halide lamp having vacuum shroud for improved performanceGEN ELECTRIC·Filed 1988·Granted Jun 19, 1990·74 cites·23 claims
- 1091US6304693B1Efficient arrangement for coupling light between light source and light guideFIBERSTARS INC·Filed 1999·Granted Oct 16, 2001·73 cites·48 claims
- 1191US5257168AProjection headlamp lighting system using a light conductor having stepped terminationGEN ELECTRIC·Filed 1992·Granted Oct 26, 1993·75 cites·18 claims
- 1291US5184883AAutomobile lighting system that includes an exterior indicating deviceGEN ELECTRIC·Filed 1992·Granted Feb 9, 1993·80 cites·8 claims
- 1391US4968916AXenon-metal halide lamp particularly suited for automotive applications having an improved electrode structureGEN ELECTRIC·Filed 1989·Granted Nov 6, 1990·52 cites·7 claims
- 1491US4949227AUpper and lower beam optical switch for line-of-light headlamps using opaque masksGEN ELECTRIC·Filed 1989·Granted Aug 14, 1990·55 cites·10 claims
- 1591US4281274ADischarge lamp having vitreous shieldGEN ELECTRIC·Filed 1979·Granted Jul 28, 1981·43 cites·9 claims
- 1690US4958263ACentralized lighting system employing a high brightness light sourceGEN ELECTRIC·Filed 1988·Granted Sep 18, 1990·87 cites·37 claims
- 1790US4868718AForward illumination lighting system for vehiclesGEN ELECTRIC·Filed 1989·Granted Sep 19, 1989·72 cites·5 claims
- 1890US4170746AHigh frequency operation of miniature metal vapor discharge lampsGEN ELECTRIC·Filed 1977·Granted Oct 9, 1979·27 cites·18 claims
- 1989US7163326B2Efficient luminaire with directional side-light extractionFIBERSTARS INC·Filed 2005·Granted Jan 16, 2007·33 cites·30 claims
- 2088US7330632B1Fiberoptic luminaire with scattering and specular side-light extractor patternsENERGY FOCUS INC·Filed 2006·Granted Feb 12, 2008·24 cites·24 claims
- 2188US5587626APatterned optical interference coatings for only a portion of a high intensity lamp envelopeGEN ELECTRIC·Filed 1995·Granted Dec 24, 1996·52 cites·24 claims
- 2286US5222793ARemote vehicle lighting systemGEN ELECTRIC·Filed 1991·Granted Jun 29, 1993·72 cites·17 claims
- 2386US5058985ACoupling means between a light source and a bundle of optical fibers and method of making such coupling meansGEN ELECTRIC·Filed 1990·Granted Oct 22, 1991·69 cites·17 claims
- 2484US9557044B2LED lamp with dual mode operationENERGY FOCUS INC·Filed 2015·Granted Jan 31, 2017·6 cites·20 claims
- 2584US3996493AFluorescent lamp unit having ballast resistorGEN ELECTRIC·Filed 1975·Granted Dec 7, 1976·39 cites·18 claims
- 2683US7374313B2Luminaire with improved lateral illuminance controlENERGY FOCUS INC·Filed 2006·Granted May 20, 2008·13 cites·45 claims
- 2783US7164819B2Side-light extraction by light pipe-surface alteration and light-extraction devices extending radially beyond the outer claddingFIBERSTARS INC·Filed 2004·Granted Jan 16, 2007·31 cites·36 claims
- 2883US5388034AVehicle headlamp comprising a discharge lamp including an inner envelope and a surrounding shroudGEN ELECTRIC·Filed 1992·Granted Feb 7, 1995·50 cites·6 claims
- 2982US5317484ACollection optics for high brightness discharge light sourceGEN ELECTRIC·Filed 1993·Granted May 31, 1994·55 cites·14 claims
- 3082US5059865AXenon-metal halide lamp particularly suited for automotive applicationsGEN ELECTRIC·Filed 1990·Granted Oct 22, 1991·40 cites·20 claims
- 3181US7198398B2Adjustable-aim light pipe fixtureFIBERSTARS INC·Filed 2005·Granted Apr 3, 2007·18 cites·24 claims
- 3281US5239230AHigh brightness discharge light sourceGEN ELECTRIC·Filed 1992·Granted Aug 24, 1993·41 cites·15 claims
- 3381US5198727AAcoustic resonance operation of xenon-metal halide lamps on unidirectional currentGEN ELECTRIC·Filed 1991·Granted Mar 30, 1993·38 cites·15 claims
- 3481US4275329AElectrode with overwind for miniature metal vapor lampGEN ELECTRIC·Filed 1978·Granted Jun 23, 1981·18 cites·7 claims
- 3579US5676579APatterned optical interference coatings for electric lampsGEN ELECTRIC·Filed 1996·Granted Oct 14, 1997·29 cites·5 claims
- 3679US5121034AAcoustic resonance operation of xenon-metal halide lampsGEN ELECTRIC·Filed 1990·Granted Jun 9, 1992·41 cites·22 claims
- 3779US4930049AOptical multiplexed electrical distribution system particularly suited for vehiclesGEN ELECTRIC·Filed 1988·Granted May 29, 1990·42 cites·36 claims
- 3879US4151445AInstant light lamp control circuitGEN ELECTRIC·Filed 1978·Granted Apr 24, 1979·30 cites·8 claims
- 3978US5259056ACoupler apparatus for use with a high brightness light sourceGEN ELECTRIC·Filed 1992·Granted Nov 2, 1993·48 cites·14 claims
- 4078US4851969AOptical control system particularly suited for infrequently activated devicesGEN ELECTRIC·Filed 1988·Granted Jul 25, 1989·30 cites·2 claims
- 4178US4810932ATungsten-halogen incandescent and metal vapor discharge lamps and processes of making suchGEN ELECTRIC·Filed 1985·Granted Mar 7, 1989·37 cites·32 claims
- 4277US6219480B1Optical coupler for coupling light between one and a plurality of light portsFIBERSTARS INC·Filed 1999·Granted Apr 17, 2001·50 cites·27 claims
- 4377US5420769AHigh temperature lamp assembly with improved thermal management propertiesGEN ELECTRIC·Filed 1993·Granted May 30, 1995·46 cites·15 claims
- 4477US4868458AXenon lamp particularly suited for automotive applicationsGEN ELECTRIC·Filed 1988·Granted Sep 19, 1989·21 cites·16 claims
- 4576US5675677ALamp-to-light guide coupling arrangement for an electrodeless high intensity discharge lampGEN ELECTRIC·Filed 1995·Granted Oct 7, 1997·54 cites·16 claims
- 4676US4904907ABallast circuit for metal halide lampGEN ELECTRIC·Filed 1988·Granted Feb 27, 1990·36 cites·16 claims
- 4775US11057981B2System and method for providing high power factor wired lamp controlENERGY FOCUS INC·Filed 2020·Granted Jul 6, 2021·1 cites·25 claims
- 4875US7588342B2Lighted refrigerated display case with remote light sourceENERGY FOCUS INC·Filed 2006·Granted Sep 15, 2009·10 cites·4 claims
- 4975US5341445APolygonal-shaped optical coupling member for use with a high brightness light sourceGEN ELECTRIC·Filed 1992·Granted Aug 23, 1994·39 cites·32 claims
- 5075US4547704AHigher efficiency incandescent lighting unitsGEN ELECTRIC·Filed 1983·Granted Oct 15, 1985·30 cites·10 claims
Showing the top 50 of 128 patent records by PatentIndex Score.
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