Inventor
Kouji Nakahara
Inventor
Tokyo, JP
Overview
Patents· 23 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H01Sprimary
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light36%
H04NPictorial communication, e.g. television14%
B82YSpecific uses or applications of nanostructures12%
G02BOptical elements, systems or apparatus10%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein7%
H04BTransmission5%
H04JMultiplex communication5%
H10HInorganic light-emitting semiconductor devices having potential barriers5%
H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation2%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h102%
PatentTitleYear
10,355,454Optical semiconductor device, optical module, and method for manufacturing optical semiconductor device201910,312,665Optical semiconductor device, optical subassembly, and optical module201910,305,599Optical transmitter module201910,187,157Optical transmitter module201910,181,699Semiconductor optical device, optical module, and method for manufacturing semiconductor optical device20199,778,428'Semiconductor optical device, arrayed semiconductor optical device, and optical module'20179,263,852'Semiconductor laser and optical semiconductor device'20168,958,451'Semiconductor laser and optical semiconductor device'20158,891,570'Optical semiconductor device'20148,569,727'Light beam scanning image projection apparatus'20138,124,432'Nitride semiconductor optical element and manufacturing method thereof'20127,583,714'Vertical cavity surface emitting semiconductor laser device'20097,223,993'Optical semiconductor device'20076,990,133'Laser diode and manufacturing method thereof'20066,989,550'Distributed feedback semiconductor laser equipment employing a grating'20066,985,505'Semiconductor laser diode and optical module'20066,958,831'Image scanning method and apparatus thereof'20056,943,922'Image reading method and apparatus for same'20056,931,039'Optical transmitter equipment and semiconductor laser device'20056,639,241'Optical device using semiconductor'20036,563,608'Document reading apparatus and light source assembly therefor'20036,522,424'Image data transfer system and method'20036,396,044'Image reading apparatus'2002Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2002–2019Based in Tokyo, JP· patent location history
2003–2013Patents assigned to HITACHI LTD (4)· patent assignee history
2003–2005Patents assigned to NEC CORP (4)· patent assignee history
2003–2013Based in Kunitachi, JP· patent location history
2006–2012Patents assigned to OPNEXT JAPAN INC (5)· patent assignee history
2012–2013Patents assigned to NAKAHARA KOUJI (2)· patent assignee history
2014–2019Patents assigned to OCLARO JAPAN INC (9)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| OCLARO JAPAN INC | 9 | 2014–2019 |
| OPNEXT JAPAN INC | 5 | 2006–2012 |
| HITACHI LTD | 4 | 2003–2013 |
| NEC CORP | 4 | 2003–2005 |
| NAKAHARA KOUJIself | 2 | 2012–2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 14 | 2002–2019 |
| Kunitachi, JP | 9 | 2003–2013 |