Inventor
Kiichi Hamamoto
Inventor
Tokyo, JP
Overview
Patents· 20 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%
G02BOptical elements, systems or apparatus21%
B82YSpecific uses or applications of nanostructures6%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein6%
H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation6%
A61BDiagnosis3%
G01NInvestigating or analysing materials by determining their chemical or physical properties3%
H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy3%
H02HEmergency protective circuit arrangements3%
H02JElectric power networks3%
PatentTitleYear
11,050,293Power storage system, and stop control system20219,563,020'Inter-mode light switch'20178,929,418'Semiconductor laser'20158,917,959'Analyzing element and analyzing apparatus using same'20148,774,572'Bistable element'20148,295,663'Super-luminescent light emitting diode'20127,466,736'Semiconductor laser diode, semiconductor optical amplifier, and optical communication device'20087,262,435'Single-transverse-mode laser diode with multi-mode waveguide region and manufacturing method of the same'20076,813,068'Semiconductor optical amplifier and semiconductor laser'20046,768,758'Semiconductor laser, semiconductor optical amplifier, and production method thereof'20046,661,960'Semiconductor waveguide photodetector'20036,445,722'Single-transverse-mode laser diode with multi-mode waveguide region and manufacturing method of the same'20026,205,163'Single-transverse-mode 1.times.N multi-mode interferometer type semiconductor laser device'20016,148,132'Semiconductor optical amplifier'20006,117,753'Method of manufacturing compound semiconductor integrated circuit'20005,841,929'Light wavelength filtering circuit and manufacturing method thereof'19985,796,883'Optical integrated circuit and method for fabricating the same'19985,770,466'Semiconductor optical integrated circuits and method for fabricating the same'19985,565,693'Semiconductor optical integrated circuits'19965,521,994'Semiconductor optical waveguide-integrated light-receiving device'1996Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1996–2008Patents assigned to NEC CORP (14)· patent assignee history
1996–2008Based in Tokyo, JP· patent location history
2012–2017Patents assigned to UNIV KYUSHU NAT UNIV CORP (4)· patent assignee history
2012–2014Patents assigned to HAMAMOTO KIICHI (3)· patent assignee history
2012–2017Based in Fukuoka, JP· patent location history
2014Patents assigned to DENSO CORP (1)· patent assignee history
2021Patents assigned to PANASONIC IP MAN CO LTD (1)· patent assignee history
2021Based in Osaka, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NEC CORP | 14 | 1996–2008 |
| UNIV KYUSHU NAT UNIV CORP | 4 | 2012–2017 |
| HAMAMOTO KIICHIself | 3 | 2012–2014 |
| DENSO CORP | 1 | 2014 |
| PANASONIC IP MAN CO LTD | 1 | 2021 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 14 | 1996–2008 |
| Fukuoka, JP | 5 | 2012–2017 |
| Osaka, JP | 1 | 2021 |