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Inventor

Koichi Akiyama

Inventor
Matsumoto, JP

Overview

145→
Patents
1990–2020
Patent span
Physics
Primary field (CPC G)

Patents· 145 as inventor

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

G03Bprimary
G03BApparatus or arrangements for taking photographs or for projecting or viewing them29%
G02BOptical elements, systems or apparatus17%
H04NPictorial communication, e.g. television16%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein5%
F21VFunctional features or details of lighting devices or systems thereof4%
A61BDiagnosis3%
H04BTransmission2%
C08LCompositions of macromolecular compounds2%
Y10TTechnical subjects covered by former us classification2%
B29CShaping or joining of plastics1%
PatentTitleYear
10,877,364Illuminator and projector202010,866,497Wavelength conversion device, light source device, and projector202010,845,745Paper feeding device202010,838,282Optical ring circuit with electrical filter202010,831,085Wavelength conversion element, illuminator, and projector202010,805,009Optical modulation apparatus, and timing adjustment method for optical modulation apparatus202010,768,517Light source device and projector202010,725,365Illumination device and projector202010,649,321Light source device and projector202010,652,509Illuminator and projector202010,649,324Illumination device and projector202010,634,983Light source apparatus and projector202010,627,710Light source apparatus and projector202010,620,370Optical multiplexer202010,620,518Light source device and projector202010,606,157Illuminator and projector202010,599,025Light source device and projector202010,571,788Light source device, illumination device, and projector202010,564,531Light source device and projector202010,547,389Optical modulation unit, and method for controlling optical modulation unit202010,534,239Optical modulator202010,534,250Illumination device and projector202010,474,016Wavelength converter, light source apparatus, and projector201910,474,023Light source apparatus, illuminator, and projector201910,466,579Light source apparatus and projector201910,416,542Light source device, light source unit, and projector201910,372,027Illuminator and projector201910,343,352Fiber-reinforced resin material, molded article, method and device for manufacturing fiber-reinforced resin material, and fiber bundle group inspection device201910,323,133Molding material, sheet molding compound, and fiber-reinforced composite material obtained using same201910,300,666Fiber-reinforced resin material, molded article, method and device for manufacturing fiber-reinforced resin material, and fiber bundle group inspection device201910,268,113Illumination device and projector having light shaping optical system including free-form surface201910,216,077Illumination device and projector201910,209,527Illuminator and projector201910,200,130Optical transmitter201910,175,566Light source device, illumination device, and projector201910,146,119Light source device, illumination device, and projector201810,129,479Photographing apparatus and photographing method with optical low-pass filter effect201810,108,076Light source apparatus and projector201810,067,414Wavelength conversion element, light source apparatus, and projector201810,060,602Illuminator and projector201810,057,553Light source device, illumination device, and projector201810,036,946Light source device, illumination device, and projector with solid-state light source and collimator lens20189,989,830Optical modulator element, optical modulation module including optical modulator element, and method for manufacturing optical modulator element20189,983,470Light source device and projector20189,961,314Illumination device and projector20189,946,143Light source apparatus and projector20189,942,528Wavelength conversion element, illumination device, and projector20189,915,849'Optical modulator'20189,915,860'Wavelength conversion element, illumination device, and projector'20189,898,394'Test design assistance device, test design assistance method, program and computer-readable medium'20189,823,558'Light source device, method for manufacturing light source device, and projector'20179,810,977'Solid-state light source device and projector utilizing a plurality of collimator lenses'20179,804,485'Light source device, lighting apparatus, and projector'20179,804,486'Light source apparatus, illuminator, and projector having multiple reflection elements'20179,733,497'Semiconductor optical modulator and optical module'20179,632,321'Illumination device and projector'20179,568,817'Illumination apparatus and projector'20179,541,819'Illuminator and projector for preventing a shift of an illumination region'20179,500,941'Illumination device and projector'20169,488,902'Illuminator and projector'20169,429,831'Lighting device and projector'20169,285,667'Projector'20169,246,622'Semiconductor optical element, optical module and method of manufacturing semiconductor optical element'20169,010,938'Projector with multiple different types of illumination devices'20159,004,692'Projector having diffusing unit and polarization conversion element'20158,998,421'Projector having polarization conversion'20158,985,623'Steering wheel structure with airbag module'20158,944,606'Projector having color separation optical system with reflecting curved surface'20158,791,692'Magnetic position detecting device'20148,714,747'Projector having a first light separation optical system and a second light separation optical system'20148,628,199'Light source device with a plurality of light sources and a collimating lens'20148,596,795'Projector'20138,585,208'Light source device and projector'20138,562,152'Collimator lens unit with aspheric surfaces for imparting a luminous flux density distribution'20138,179,600'Screen and method of manufacturing screen'20128,123,211'Pickup roller lifting and lowering mechanism in paper feeding unit and image forming apparatus including the pickup roller lifting and lowering mechanism'20128,123,366'Light source with truncated ellipsoidal reflector'20128,111,457'Method of manufacturing screen and screen'20127,869,126'Screen and projection system'20117,859,750'Screen, projection system, and method of manufacturing the screen'20107,854,519'Illuminating device and projector that increase light utilization efficiency'20107,819,534'Projector and method for manufacturing projector'20107,628,494'Illuminating apparatus and projector'20097,494,225'Projector including an illumination device with a light cut-off member and rotating prism'20097,404,643'Projector having polarization conversion element'20087,382,539'Projector'20087,364,312'Light source lamp and projector'20087,357,531'Light source device and projector'20087,354,162'Projector'20087,288,899'Light source, projector, and method of driving arc tube'20077,252,410'Projector'20077,245,436'Illumination device and projector'20077,213,927'Projector with electrooptical modulator'20077,204,594'Projector'20077,185,984'Illumination optical system and projector comprising the same'20077,185,991'Projector with anamorphic optical system'20077,159,985'Projector'20077,161,740'Projector'20077,150,535'Lighting device and projector equipped with the same'20067,111,962'Light source and projector'20067,052,139'Illumination unit and projector including the same'20067,052,140'Illumination device and projector equipped therewith'20067,052,141'Projector with improved lens apparatus'20067,054,066'Projection display device having micro-lenses'20067,036,941'Illumination optical device and projector'20067,006,296'System and method for providing a substrate having micro-lenses'20066,926,413'Supporting mechanism for solid type rod integrator'20056,851,811'Projector including a relay optical system'20056,850,368'System and method for providing a substrate having micro-lenses'20056,796,662'Illumination optical system and projector'20046,688,756'Light source device, and illuminating optical system and projector including the same'20046,633,435'Illumination optical system and projector comprising the same'20036,618,200'System and method for providing a substrate having micro-lenses'20036,607,276'Illuminating optical system and projector'20036,592,986'Material for molding thermosetting resin sheet, production process, and molded product'20036,491,397'Illumination optical system and projector using the same'20026,384,965'Wavelength division multiplexing optical fiber amplifier'20026,327,076'Optical amplifier equipment for WDM optical communication'20016,245,419'Resin composition having excellent vibration-damping properties and molded article made thereof'20016,155,858'Floating electrical connector'20005,783,635'Unsaturated polyester resin composition'19985,756,600'Urethane-modified epoxy vinyl ester resin'19985,412,003'Unsaturated polyester resin compositions, molding materials, and molded products'19955,395,865'Unsaturated polyester compositions, molding materials and molded products'19955,362,804'Core-shell polymer and unsaturated polyester resin composition containing the same as low shrinking additive'19945,354,585'Molding materials and molded products thereform'19945,355,186'Ophthalmic measurement apparatus'19945,323,883'Friction device'19945,246,983'Unsaturated polyester resin compositions, molding compounds and molded products therefrom'19935,204,705'Ophthalmic measurement apparatus'19935,184,157'Ophthalmic measurement apparatus'19935,145,405'Chip connector structure'19925,126,581'Particle measurement method and apparatus for determining corrected particle diameter'19925,120,123'Ophthalmic measuring method and apparatus'19925,106,578'Cast-to-near-net-shape steel body of heat-resistant cast steel'19925,098,181'Ophthalmic measuring apparatus'19925,091,147'Heat-resistant cast steels'19925,077,326'Unsaturated polyester compositions molding materials therefrom and molded products therefrom'19915,024,520'Ophthalmic measurement apparatus'19915,017,008'Particle measuring apparatus'19915,013,146'Opthalmological measurement apparatus'19915,000,562'Ophthalmic disease detection method and apparatus'1991D0314942'Electrical connector housing'19914,988,184'Ophthalmic disease detection apparatus'19914,900,145'Ophthalmic disease detection apparatus'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990–1994Patents assigned to KOWA CO (12)· patent assignee history
1991–2020Based in Tokyo, JP· patent location history
1991–1994Based in Osaka, JP· patent location history
1993–2001Patents assigned to TAKEDA CHEMICAL INDUSTRIES LTD (8)· patent assignee history
1994–2003Based in Kamakura, JP· patent location history
1995–2020Based in Kanagawa, JP· patent location history
2002–2020Patents assigned to SEIKO EPSON CORP (95)· patent assignee history
2002–2020Based in Matsumoto, JP· patent location history
2012–2017Patents assigned to AKIYAMA KOICHI (17)· patent assignee history
2014–2020Patents assigned to MITSUBISHI ELECTRIC CORP (11)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SEIKO EPSON CORP952002–2020
AKIYAMA KOICHIself172012–2017
KOWA CO121990–1994
MITSUBISHI ELECTRIC CORP112014–2020
TAKEDA CHEMICAL INDUSTRIES LTD81993–2001
Locations
LocationPatentsSpan
Matsumoto, JP942002–2020
Tokyo, JP261991–2020
Kamakura, JP51994–2003
Kanagawa, JP41995–2020
Osaka, JP31991–1994