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Hirohiko Kobayashi
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Kawasaki-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Gain-coupled DFB laser diode
Patent number
6,925,103
Issue date
Aug 2, 2005
Fujitsu Limited
Tsutomu Ishikawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Complex coupling MQW semiconductor laser
Patent number
6,850,550
Issue date
Feb 1, 2005
Fujitsu Limited
Hirohiko Kobayashi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Distributed feedback semiconductor laser
Patent number
6,560,266
Issue date
May 6, 2003
Fujitsu Limited
Hajime Shoji
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Semiconductor laser and method of manufacturing the same
Patent number
6,512,783
Issue date
Jan 28, 2003
Fujitsu Limited
Tsuyoshi Yamamoto
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Semiconductor light-emitting device
Patent number
6,426,515
Issue date
Jul 30, 2002
Fujitsu Limited
Tsutomu Ishikawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Optical semiconductor device and a method of manufacturing the same
Patent number
6,238,943
Issue date
May 29, 2001
Fujitsu Limited
Hirohiko Kobayashi
G02 - OPTICS
Information
Patent Grant
Method of fabricating compound semiconductor device and optical sem...
Patent number
6,034,983
Issue date
Mar 7, 2000
Fujitsu Limited
Takuya Fujii
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Optical semiconductor device and a method of manufacturing the same
Patent number
5,987,046
Issue date
Nov 16, 1999
Fujitsu Limited
Hirohiko Kobayashi
G02 - OPTICS
Information
Patent Grant
Fabricating compound semiconductor by varying ratio of stagnant lay...
Patent number
5,937,273
Issue date
Aug 10, 1999
Fujitsu Limited
Takuya Fujii
B82 - NANO-TECHNOLOGY
Patents Applications
last 30 patents
Information
Patent Application
Distributed feedback semiconductor laser oscillating at longer wave...
Publication number
20040151224
Publication date
Aug 5, 2004
FUJITSU LIMITED
Hirohiko Kobayashi
B82 - NANO-TECHNOLOGY
Information
Patent Application
Gain-coupled DFB laser diode
Publication number
20030086464
Publication date
May 8, 2003
FUJITSU LIMITED
Tsutomu Ishikawa
B82 - NANO-TECHNOLOGY
Information
Patent Application
SEMICONDUCTOR LASER AND METHOD OF MANUFACTURING THE SAME
Publication number
20030012240
Publication date
Jan 16, 2003
TSUYOSHI YAMAMOTO
B82 - NANO-TECHNOLOGY
Information
Patent Application
Distributed feedback semiconductor laser
Publication number
20020039375
Publication date
Apr 4, 2002
FUJITSU LIMITED
Hajime Shoji
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Complex coupling MQW semiconductor laser
Publication number
20020009116
Publication date
Jan 24, 2002
FUJITSU LIMITED
Hirohiko Kobayashi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Semiconductor light-emitting device
Publication number
20010032976
Publication date
Oct 25, 2001
FUJITSU LIMITED
Tsutomu Ishikawa
H01 - BASIC ELECTRIC ELEMENTS