Takashi Kajimura

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Hetero crystalline structure and semiconductor device using it
- Patent number 5,300,793
- Issue date Apr 5, 1994
- Hitachi, Ltd.
- Masahiko Kondow
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optoelectronic devices
- Patent number 5,157,679
- Issue date Oct 20, 1992
- Hitachi Ltd.
- Masahiko Kondow
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor laser
- Patent number 5,136,601
- Issue date Aug 4, 1992
- Hitachi, Ltd.
- Takashi Kajimura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor laser device
- Patent number 5,042,046
- Issue date Aug 20, 1991
- Hitachi, Ltd.
- Misuzu Sagawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor laser device
- Patent number 4,961,197
- Issue date Oct 2, 1990
- Hitachi, Ltd.
- Toshiaki Tanaka
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Semiconductor laser having a multiple quantum well structure doped...
- Patent number 4,881,235
- Issue date Nov 14, 1989
- Hitachi, Ltd.
- Naoki Chinone
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Semiconductor laser having quantum well active region doped with im...
- Patent number 4,881,238
- Issue date Nov 14, 1989
- Hitachi, Ltd.
- Naoki Chinone
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Semiconductor laser device having a lens-like refractive index dist...
- Patent number 4,872,175
- Issue date Oct 3, 1989
- Hitachi, Ltd.
- Shinichi Nakatsuka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor laser device
- Patent number 4,841,531
- Issue date Jun 20, 1989
- Hitachi, Ltd.
- Masahiko Kondow
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Semiconductor laser device and method of fabricating the same
- Patent number 4,827,483
- Issue date May 2, 1989
- Hitachi, Ltd.
- Tadashi Fukuzawa
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Laser diode
- Patent number 4,821,275
- Issue date Apr 11, 1989
- Hitachi, Ltd.
- Shinichi Nakatsuka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor laser
- Patent number 4,811,354
- Issue date Mar 7, 1989
- Hitachi, Ltd.
- Kazuhisa Uomi
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Semiconductor laser device having high optical intensity and reliab...
- Patent number 4,800,565
- Issue date Jan 24, 1989
- Hitachi, Ltd.
- Misuzu Yoshizawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor laser
- Patent number 4,797,891
- Issue date Jan 10, 1989
- Hitachi, Ltd,
- Kazuhisa Uomi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Opto-electronic device
- Patent number 4,794,606
- Issue date Dec 27, 1988
- Hitachi, Ltd.
- Masahiko Kondow
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Fabrication process of semiconductor lasers
- Patent number 4,783,425
- Issue date Nov 8, 1988
- Hitachi, Ltd.
- Tadashi Fukuzawa
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Semiconductor laser device having little astigmatism
- Patent number 4,780,879
- Issue date Oct 25, 1988
- Hitachi, Ltd.
- Naoki Chinone
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor laser
- Patent number 4,752,933
- Issue date Jun 21, 1988
- Hitachi, Ltd.
- Kazuhisa Uomi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Multi quantum well laser with parallel injection
- Patent number 4,752,934
- Issue date Jun 21, 1988
- Hitachi, Ltd.
- Tadashi Fukuzawa
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Semiconductor laser device
- Patent number 4,740,976
- Issue date Apr 26, 1988
- Hitachi, Ltd.
- Takashi Kajimura
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Buried heterojunction laser
- Patent number 4,630,279
- Issue date Dec 16, 1986
- Hitachi, Ltd.
- Takashi Kajimura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
High output semiconductor laser device utilizing a mesa-stripe opti...
- Patent number 4,602,371
- Issue date Jul 22, 1986
- Hitachi, Ltd.
- Toshihiro Kawano
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor laser device having facets provided with dielectric l...
- Patent number 4,599,729
- Issue date Jul 8, 1986
- Hitachi, Ltd.
- Yoshimitsu Sasaki
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor laser device
- Patent number 4,563,764
- Issue date Jan 7, 1986
- Hitachi, Ltd.
- Takao Kuroda
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Phase-locked semiconductor laser device
- Patent number 4,509,173
- Issue date Apr 2, 1985
- Hitachi, Ltd.
- Jun-ichi Umeda
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Phase-locked semiconductor laser device
- Patent number 4,503,540
- Issue date Mar 5, 1985
- Hitachi, Ltd.
- Hisao Nakashima
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor laser device
- Patent number 4,432,091
- Issue date Feb 14, 1984
- Hitachi, Ltd.
- Takao Kuroda
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor laser device
- Patent number 4,426,703
- Issue date Jan 17, 1984
- Hitachi, Ltd.
- Takao Kuroda
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor laser device
- Patent number 4,369,513
- Issue date Jan 18, 1983
- Hitachi, Ltd.
- Jun-ichi Umeda
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor laser device with facet passivation film
- Patent number 4,337,443
- Issue date Jun 29, 1982
- Hitachi, Ltd.
- Jun-ichi Umeda
- H01 - BASIC ELECTRIC ELEMENTS

Takashi Kajimura

Person

Patents Grantslast 30 patents

Hetero crystalline structure and semiconductor device using it

Optoelectronic devices

Semiconductor laser

Semiconductor laser device

Semiconductor laser device

Semiconductor laser having a multiple quantum well structure doped...

Semiconductor laser having quantum well active region doped with im...

Semiconductor laser device having a lens-like refractive index dist...

Semiconductor laser device

Semiconductor laser device and method of fabricating the same

Laser diode

Semiconductor laser

Semiconductor laser device having high optical intensity and reliab...

Semiconductor laser

Opto-electronic device

Fabrication process of semiconductor lasers

Semiconductor laser device having little astigmatism

Semiconductor laser

Multi quantum well laser with parallel injection

Semiconductor laser device

Buried heterojunction laser

High output semiconductor laser device utilizing a mesa-stripe opti...

Semiconductor laser device having facets provided with dielectric l...

Semiconductor laser device

Phase-locked semiconductor laser device

Phase-locked semiconductor laser device

Semiconductor laser device

Semiconductor laser device

Semiconductor laser device

Semiconductor laser device with facet passivation film