Keigo Aga

Follow

Person

Yokohama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Light-emitting device and method of manufacturing the same
- Patent number 8,654,810
- Issue date Feb 18, 2014
- Sony Corporation
- Hiroyuki Fukasawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor laser driving method and optical disc apparatus
- Patent number 6,614,820
- Issue date Sep 2, 2003
- Sony Corporation
- Shoji Hirata
- G11 - INFORMATION STORAGE
Information Patent Grant
Semiconductor laser driving method and optical disc apparatus
- Patent number 6,580,737
- Issue date Jun 17, 2003
- Sony Corporation
- Shoji Hirata
- G11 - INFORMATION STORAGE
Information Patent Grant
Semiconductor laser driving method and optical disc apparatus
- Patent number 6,567,440
- Issue date May 20, 2003
- Sony Corporation
- Shoji Hirata
- G11 - INFORMATION STORAGE
Information Patent Grant
Field effect transistor apparatus
- Patent number 5,428,232
- Issue date Jun 27, 1995
- Sony Corporation
- Mitsuhiro Hika
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical semiconductor device
- Patent number 4,985,597
- Issue date Jan 15, 1991
- Sumitomo Electric Industries, Ltd.
- Takeshi Sekiguchi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Apparatus and a method for coupling an optically operative device w...
- Patent number 4,955,683
- Issue date Sep 11, 1990
- Sumitomo Electric Industries, Ltd.
- Nobuo Shiga
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
LIGHT-EMITTING DEVICE AND METHOD OF MANUFACTURING THE SAME
- Publication number 20100215073
- Publication date Aug 26, 2010
- SONY CORPORATION
- Hiroyuki Fukasawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Semiconductor laser driving method and optical disc apparatus
- Publication number 20010005390
- Publication date Jun 28, 2001
- Shoji Hirata
- B82 - NANO-TECHNOLOGY