Inventor
Akihiko Kasukawa
Inventor
Tokyo, JP
Overview
Patents· 42 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 light58%
B82YSpecific uses or applications of nanostructures24%
H10HInorganic light-emitting semiconductor devices having potential barriers5%
G02BOptical elements, systems or apparatus3%
H10DInorganic electric semiconductor devices3%
H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation3%
G01CMeasuring distances, levels or bearings2%
H01LSemiconductor devices2%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h102%
PatentTitleYear
9,960,572Semiconductor device20188,385,379'Optical semiconductor device and pumping light source for optical fiber amplifier'20138,222,658'Semiconductor light emitting element and method of manufacturing therefor'20128,222,639'Nitride based semiconductor device and method of manufacturing the same'20127,564,563'Laser gyro and electronic device using the same'20097,453,100'DFB laser assembly and laser module'20087,072,373'Ridge waveguide semiconductor laser diode'20067,061,954'Semiconductor optical waveguide structure'20066,911,713'Optical device having a carrier-depleted layer'20056,829,277'Distributed feedback semiconductor laser device and laser module'20046,810,063'Semiconductor laser device'20046,782,022'Semiconductor laser device having improved output power characteristics'20046,738,405'Semiconductor laser'20046,737,290'Surface-emitting semiconductor laser device and method for fabricating the same, and surface-emitting semiconductor laser array employing the laser device'20046,731,663'Ridge waveguide type semiconductor laser device'20046,704,342'Gain-coupled distributed-feedback semiconductor laser device'20046,690,701'Semiconductor laser device'20046,674,783'Distributed feedback type semiconductor laser device and method of manufacturing the same'20046,661,828'Semiconductor laser device'20036,643,315'Distributed feedback semiconductor laser device and multi-wavelength laser array'20036,618,417'Ridge waveguide semiconductor laser diode'20036,603,138'Quantum-confinement stark effect optical modulator'20036,580,740'Semiconductor laser device having selective absorption qualities'20036,560,260'Ridge waveguide semiconductor laser diode'20036,545,296'Semiconductor light emitting device'20036,528,337'Process of producing semiconductor layer structure'20036,493,369'Gain-coupling distributed feedback type semiconductor laser device'20026,472,691'Distributed feedback semiconductor laser device'20026,396,861'N-type modulation-doped multi quantum well semiconductor laser device'20026,281,523'Semiconductor optical waveguide'20016,278,139'Semiconductor light-emitting diode'20015,953,358'Semiconductor laser device'19995,929,462'Semiconductor optical device having a strained quantum well structure'19995,914,977'Semiconductor laser having a high-reflectivity reflector on the laser facets thereof, an optical integrated device provided with the semiconductor laser, and a manufacturing method therefor'19995,854,090'Method of manufacturing wafer bonded semiconductor laser device'19985,757,833'Semiconductor laser having a transparent light emitting section, and a process of producing the same'19985,666,375'Semiconductor quantum well laser having a low threshold current density'19975,497,389'Semiconductor laser device having an active layer and a resonator having a single reflector or pair of reflectors'19965,390,208'Strained quantum well type semiconductor laser device'19955,363,392'Strained quantum well type semiconductor laser device'19945,327,445'Quantum-well type semiconductor laser device'19945,325,385'Buried-type semiconductor laser device'1994Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1994–2018Patents assigned to FURUKAWA ELECTRIC CO LTD (40)· patent assignee history
1994–2018Based in Tokyo, JP· patent location history
2004Based in Chiyoda-ku, JP· patent location history
2009Patents assigned to ATR ADVANCED TELECOMM RES INST (1)· patent assignee history
2012–2013Patents assigned to KASUKAWA AKIHIKO (3)· patent assignee history
2012Patents assigned to ISHII HIROTATSU (2)· patent assignee history
2012Patents assigned to SHINAGAWA TATSUYUKI (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| FURUKAWA ELECTRIC CO LTD | 40 | 1994–2018 |
| KASUKAWA AKIHIKOself | 3 | 2012–2013 |
| ISHII HIROTATSU | 2 | 2012 |
| SHINAGAWA TATSUYUKI | 2 | 2012 |
| ATR ADVANCED TELECOMM RES INST | 1 | 2009 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 41 | 1994–2018 |
| Chiyoda-ku, JP | 1 | 2004 |