Inventor

John M. Davenport

Inventor

Lyndhurst, OH, US

Overview

1976–2017

Patent span

Physics

Primary field (CPC G)

Patents· 117 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G02Bprimary

G02BOptical elements, systems or apparatus26%

F21SNon-portable lighting devices12%

H01JElectric discharge tubes or discharge lamps11%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests7%

H05BElectric heating7%

B60QArrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general6%

F21VFunctional features or details of lighting devices or systems thereof6%

F21WIndexing scheme associated with subclasses f21k, f21l, f21s and f21v, relating to uses or applications of lighting devices or systems5%

Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications5%

H01KElectric incandescent lamps3%

PatentTitleYear

9,557,044'LED lamp with dual mode operation'2017 8,956,006'Elongated LED lamp for replacing a fluorescent lamp'2015 8,870,428'Elongated LED lighting arrangement'2014 8,348,488'Elongated solid luminaire with light-emitting portion with first and second extraction regions spatially divided along the longitudinal axis thereof'2013 7,588,342'Lighted refrigerated display case with remote light source'2009 7,549,783'Efficient luminaire with directional side-light extraction'2009 7,374,313'Luminaire with improved lateral illuminance control'2008 7,330,632'Fiberoptic luminaire with scattering and specular side-light extractor patterns'2008 7,220,035'Compact, high-efficiency illumination system for video-imaging devices'2007 7,198,398'Adjustable-aim light pipe fixture'2007 7,194,184'Light pipe with side-light extraction'2007 7,190,863'Light-pipe arrangement with reduced fresnel-reflection losses'2007 7,182,484'Light appliance and cooling arrangement'2007 7,164,819'Side-light extraction by light pipe-surface alteration and light-extraction devices extending radially beyond the outer cladding'2007 7,163,329'Adjustable light pipe fixture'2007 7,163,326'Efficient luminaire with directional side-light extraction'2007 7,008,071'Light collection system converting ultraviolet energy to visible light'2006 6,942,373'Fiberoptic lighting system with shaped collector for efficiency'2005 6,554,456'Efficient directional lighting system'2003 6,546,752'Method of making optical coupling device'2003 6,545,428'Light fixture with submersible enclosure for an electric lamp'2003 6,508,579'Lighting apparatus for illuminating well-defined limited areas'2003 6,453,099'Multi-stranded fiberoptic light delivery system with smooth color transitioning'2002 6,350,050'Efficient fiberoptic directional lighting system'2002 6,304,693'Efficient arrangement for coupling light between light source and light guide'2001 6,302,571'Waterproof system for delivering light to a light guide'2001 6,294,800'Phosphors for white light generation from UV emitting diodes'2001 6,220,740'High efficiency dual output light source'2001 6,219,480'Optical coupler for coupling light between one and a plurality of light ports'2001 6,192,176'Compact optical system with turn and color mixing'2001 6,087,775'Exterior shroud lamp'2000 5,927,849'Low angle, dual port light coupling arrangement'1999 5,924,792'Modular dual port central lighting system'1999 5,896,004'Double ended quartz lamp with end bend control'1999 5,877,681'System and method for broadcasting colored light for emergency signalling'1999 5,842,765'Tricolor lighting system'1998 5,826,963'Low angle, dual port light coupling arrangement'1998 5,812,713'Optical coupling system with bend'1998 5,774,608'Optical coupling systems with bend'1998 5,692,091'Compact optical coupling systems'1997 5,676,579'Patterned optical interference coatings for electric lamps'1997 5,675,677'Lamp-to-light guide coupling arrangement for an electrodeless high intensity discharge lamp'1997 5,664,863'Compact uniform beam spreader for a high brightness centralized lighting system'1997 5,654,610'Electrodeless discharge lamp having a neon fill'1997 5,636,915'High brightness projection lighting system'1997 5,587,626'Patterned optical interference coatings for only a portion of a high intensity lamp envelope'1996 5,567,031'High efficiency dual output light source'1996 5,563,977'Display system having greyscale control of fiber optic delivered light output'1996 5,560,699'Optical coupling arrangement between a lamp and a light guide'1996 5,552,671'UV Radiation-absorbing coatings and their use in lamps'1996 5,526,237'Lighting system for increasing brightness to a light guide'1996 5,515,243'Retrofit optical assembly for lighting system'1996 5,479,545'Reverse flared optical coupling member for use with a high brightness light source'1995 5,469,337'Multiple port high brightness centralized lighting system'1995 5,420,769'High temperature lamp assembly with improved thermal management properties'1995 5,414,601'Projection headlamp lighting system for projecting a wide spread controlled pattern of light'1995 5,408,552'Light valves for light guides using scattering materials'1995 5,398,171'Light guide termination arrangement for producing a convergent beam output'1995 5,388,034'Vehicle headlamp comprising a discharge lamp including an inner envelope and a surrounding shroud'1995 5,367,590'Optical coupling assembly for use with a high brightness light source'1994 5,343,367'Projection headlamp system having direct optical coupling of light distribution elements with discharge arc light source'1994 5,341,445'Polygonal-shaped optical coupling member for use with a high brightness light source'1994 5,317,237'Low voltage ballast circuit for a high brightness discharge light source'1994 5,317,484'Collection optics for high brightness discharge light source'1994 5,283,563'Backlighting of nematic curvilinear aligned phase liquid crystal display panels'1994 5,278,731'Fiber optic lighting system using conventional headlamp structures'1994 5,259,056'Coupler apparatus for use with a high brightness light source'1993 5,257,168'Projection headlamp lighting system using a light conductor having stepped termination'1993 5,239,230'High brightness discharge light source'1993 RE034318'Lighting systems employing optical fibers'1993 5,222,793'Remote vehicle lighting system'1993 5,221,876'Xenon-metal halide lamp particularly suited for automotive applications'1993 5,204,578'Heat sink means for metal halide lamp'1993 5,199,091'Arrangement and a method for coupling a light source to a light guide using a solid optical coupler'1993 5,198,727'Acoustic resonance operation of xenon-metal halide lamps on unidirectional current'1993 5,184,883'Automobile lighting system that includes an exterior indicating device'1993 5,184,882'Projection headlamp lighting system using different diameter optical light conductors'1993 5,121,034'Acoustic resonance operation of xenon-metal halide lamps'1992 5,107,165'Initial light output for metal halide lamp'1992 5,101,325'Uniform illumination of large, thin surfaces particularly suited for automotive applications'1992 5,087,218'Incandesent lamps and processes for making same'1992 5,059,865'Xenon-metal halide lamp particularly suited for automotive applications'1991 5,058,985'Coupling means between a light source and a bundle of optical fibers and method of making such coupling means'1991 5,047,695'Direct current (DC) acoustic operation of xenon-metal halide lamps using high-frequency ripple'1991 5,045,748'Tungsten-halogen incandescent and metal vapor discharge lamps and processes of making such'1991 5,032,758'Precision tubulation for self mounting lamp'1991 5,023,758'Single arc discharge headlamp with light switch for high/low beam operation'1991 4,987,347'Lamp driver circuit'1991 4,968,916'Xenon-metal halide lamp particularly suited for automotive applications having an improved electrode structure'1990 4,958,263'Centralized lighting system employing a high brightness light source'1990 4,949,227'Upper and lower beam optical switch for line-of-light headlamps using opaque masks'1990 4,935,668'Metal halide lamp having vacuum shroud for improved performance'1990 4,930,049'Optical multiplexed electrical distribution system particularly suited for vehicles'1990 4,904,907'Ballast circuit for metal halide lamp'1990 4,891,555'Metal vapor discharge lamps'1990 4,868,458'Xenon lamp particularly suited for automotive applications'1989 4,868,718'Forward illumination lighting system for vehicles'1989 4,857,810'Current interruption operating circuit for a gaseous discharge lamp'1989 4,851,969'Optical control system particularly suited for infrequently activated devices'1989 4,839,559'Radiant energy incandescent lamp'1989 4,810,932'Tungsten-halogen incandescent and metal vapor discharge lamps and processes of making such'1989 4,811,172'Lighting systems employing optical fibers'1989 4,626,745'Ballast circuit for lamps with low voltage gas discharge tubes'1986 4,584,499'Autoresonant piezoelectric transformer signal coupler'1986 4,574,219'Lighting unit'1986 4,555,647'Ballast circuit for gas discharge tubes utilizing time-pulse additions'1985 4,547,704'Higher efficiency incandescent lighting units'1985 4,538,087'Alternating current driven piezoelectric latching relay and method of operation'1985 4,494,045'Ballast circuit for a 220-volt improved lighting unit'1985 4,398,130'Arc lamp lighting unit with low and high light levels'1983 4,281,274'Discharge lamp having vitreous shield'1981 4,275,329'Electrode with overwind for miniature metal vapor lamp'1981 4,170,746'High frequency operation of miniature metal vapor discharge lamps'1979 4,151,445'Instant light lamp control circuit'1979 D0248501'Lamp unit'1978 4,028,798'Method of making electrical connections'1977 3,996,493'Fluorescent lamp unit having ballast resistor'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–2001Patents assigned to GEN ELECTRIC (89)· patent assignee history

1976–1978Based in Euclid, OH, US· patent location history

1979–2003Based in Lyndhurst, OH, US· patent location history

2000Based in Lindhurst, OH, US· patent location history

2001–2007Patents assigned to FIBERSTARS INC (17)· patent assignee history

2005–2015Based in Middleburg Heights, OH, US· patent location history

2008–2017Patents assigned to ENERGY FOCUS INC (8)· patent assignee history

2008–2009Patents assigned to OPTICAL RES ASSOCIATES (4)· patent assignee history

2013–2015Patents assigned to DAVENPORT JOHN M (3)· patent assignee history

2017Based in Tuscon, AZ, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
GEN ELECTRIC	89	1976–2001
FIBERSTARS INC	17	2001–2007
ENERGY FOCUS INC	8	2008–2017
OPTICAL RES ASSOCIATES	4	2008–2009
DAVENPORT JOHN Mself	3	2013–2015

Locations

Location	Patents	Span
Lyndhurst, OH, US	94	1979–2003
Middleburg Heights, OH, US	17	2005–2015
Euclid, OH, US	3	1976–1978
Tuscon, AZ, US	1	2017
Lindhurst, OH, US	1	2000