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Kenichi Iga
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Tokyo-to, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Method and apparatus for optical fiber splicing
Patent number
6,764,229
Issue date
Jul 20, 2004
Japan Science and Technology Corporation
Kenichi Iga
G02 - OPTICS
Information
Patent Grant
Surface-emitting laser
Patent number
6,449,300
Issue date
Sep 10, 2002
Tokyo Institute of Technology
Kenichi Iga
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Field effect transistor loaded with multiquantum barrier
Patent number
5,932,890
Issue date
Aug 3, 1999
The Furukawa Electric Co., Ltd.
Michinori Irikawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Multiquantum barrier Schottky junction device
Patent number
5,789,760
Issue date
Aug 4, 1998
The Furukawa Electric Co., Ltd.
Michinori Irikawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Optical apparatus for controlling angle of divergence of ring beam
Patent number
5,764,828
Issue date
Jun 9, 1998
Kawaguchi Kogaku Sangyo
Kenichi Iga
G02 - OPTICS
Information
Patent Grant
Semiconductor device with current confinement structure
Patent number
5,383,213
Issue date
Jan 17, 1995
The Furukawa Electric Co., Ltd.
Michinori Irikawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Group II-VI material semiconductor optical device with strained mul...
Patent number
5,362,974
Issue date
Nov 8, 1994
The Furukawa Electric Co., Ltd.
Michinori Irikawa
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Semiconductor luminous element and superlattice structure
Patent number
5,289,486
Issue date
Feb 22, 1994
Omron Corporation
Kenichi Iga
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Laser diode of variable beam divergence and information processor u...
Patent number
5,241,554
Issue date
Aug 31, 1993
Hitachi, Ltd.
Kenichi Iga
G11 - INFORMATION STORAGE
Information
Patent Grant
Method of manufacturing a surface-emitting type semiconductor laser...
Patent number
5,236,864
Issue date
Aug 17, 1993
Research Development Corporation of Japan
Kenichi Iga
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Superlattice structure
Patent number
5,091,756
Issue date
Feb 25, 1992
Tokyo Institute of Technology
Kenichi Iga
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Surface-emitting-type semiconductor laser device
Patent number
5,020,066
Issue date
May 28, 1991
Development Corporation of Japan
Kenichi Iga
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Semiconductor laser with buffer layer
Patent number
4,340,966
Issue date
Jul 20, 1982
Kokusai Denshin Denwa Kabushiki Kaisha
Shigeyuki Akiba
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
Information
Patent Application
Wafer oxidation reactor and a method for forming a semiconductor de...
Publication number
20020182823
Publication date
Dec 5, 2002
Noriyuki Yokouchi
C30 - CRYSTAL GROWTH