Takashi Kurokawa

Person

Urawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Vertical-cavity surface-emitting semiconductor laser
- Patent number 6,846,685
- Issue date Jan 25, 2005
- Nippon Telegraph and Telephone Corporation
- Hiroyuki Uenohara
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Vertical-cavity surface-emitting semiconductor laser
- Patent number 6,549,553
- Issue date Apr 15, 2003
- Nippon Telegraph and Telephone Corporation
- Hiroyuki Uenohara
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical signal processing apparatus and optical signal processing m...
- Patent number 6,456,760
- Issue date Sep 24, 2002
- Nippon Telegraph and Telephone Corporation
- Takashi Kurokawa
- G02 - OPTICS
Information Patent Grant
Vertical-cavity surface-emitting laser and method for manufacturing...
- Patent number 6,127,200
- Issue date Oct 3, 2000
- Nippon Telegraph & Telephone Corporation
- Yoshitaka Ohiso
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Optical signal processing apparatus and optical signal processing m...
- Patent number 6,122,419
- Issue date Sep 19, 2000
- Nippon Telegraph & Telephone Corporation
- Takashi Kurokawa
- G02 - OPTICS
Information Patent Grant
Vertical-cavity surface-emitting laser and method for manufacturing...
- Patent number 5,864,575
- Issue date Jan 26, 1999
- Nippon Telegraph & Telephone Corporation
- Yoshitaka Ohiso
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Optical modulator gate array including multi-quantum well photodete...
- Patent number 5,451,767
- Issue date Sep 19, 1995
- Nippon Telegraph and Telephone Corporation
- Chikara Amano
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Liquid crystal Fabry-Perot etalon with glass spacer
- Patent number 5,321,539
- Issue date Jun 14, 1994
- Nippon Telegraph & Telephone Corporation
- Katsuhiko Hirabayashi
- G02 - OPTICS
Information Patent Grant
Spatial light modulator and spatial light modulating apparatus with...
- Patent number 5,130,830
- Issue date Jul 14, 1992
- Nippon Telegraph & Telephone Corporation
- Seiji Fukushima
- G02 - OPTICS
Information Patent Grant
All-optical switch apparatus using a nonlinear etalon
- Patent number 5,076,672
- Issue date Dec 31, 1991
- Nippon Telegraph & Telephone Corporation
- Hiroyuki Tsuda
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Vertical-cavity surface-emitting semiconductor laser
- Publication number 20030156613
- Publication date Aug 21, 2003
- Hiroyuki Uenohara
- H01 - BASIC ELECTRIC ELEMENTS

Takashi Kurokawa

Person

Patents Grantslast 30 patents

Vertical-cavity surface-emitting semiconductor laser

Vertical-cavity surface-emitting semiconductor laser

Optical signal processing apparatus and optical signal processing m...

Vertical-cavity surface-emitting laser and method for manufacturing...

Optical signal processing apparatus and optical signal processing m...

Vertical-cavity surface-emitting laser and method for manufacturing...

Optical modulator gate array including multi-quantum well photodete...

Liquid crystal Fabry-Perot etalon with glass spacer

Spatial light modulator and spatial light modulating apparatus with...

All-optical switch apparatus using a nonlinear etalon

Patents Applicationslast 30 patents

Vertical-cavity surface-emitting semiconductor laser