Yasutaka Sakata

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical semiconductor device and method of manufacturing same
- Patent number 7,920,613
- Issue date Apr 5, 2011
- Renesas Electronic Corporation
- Yasutaka Sakata
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Distributed feedback laser diode
- Patent number 7,633,986
- Issue date Dec 15, 2009
- NEC Electronics Corporation
- Shotaro Kitamura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical semiconductor device and process for producing the same
- Patent number 7,083,995
- Issue date Aug 1, 2006
- NEC Electronics Corporation
- Yasutaka Sakata
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical semiconductor device and method for manufacturing the same
- Patent number 6,828,589
- Issue date Dec 7, 2004
- NEC Compound Conductor Devices, Ltd.
- Yasutaka Sakata
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical semiconductor device and process for producing the same
- Patent number 6,707,839
- Issue date Mar 16, 2004
- NEC Corporation
- Yasutaka Sakata
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Fabricating method of optical semiconductor device
- Patent number 6,399,404
- Issue date Jun 4, 2002
- NEC Corporation
- Yasutaka Sakata
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of producing an optical semiconductor device having a wavegu...
- Patent number 6,391,671
- Issue date May 21, 2002
- NEC Corporation
- Yasumasa Inomoto
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Optical semiconductor device and method of fabricating the same
- Patent number 6,383,829
- Issue date May 7, 2002
- NEC Corporation
- Yasutaka Sakata
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Optical semiconductor device having active layer and carrier recomb...
- Patent number 6,350,629
- Issue date Feb 26, 2002
- NEC Corporation
- Yasutaka Sakata
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical semiconductor device having waveguide layers buried in an I...
- Patent number 6,222,867
- Issue date Apr 24, 2001
- NEC Corporation
- Yasumasa Inomoto
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Optical semiconductor device and method of fabricating the same
- Patent number 6,167,070
- Issue date Dec 26, 2000
- NEC Corporation
- Yasutaka Sakata
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Optical semiconductor device with a current blocking structure and...
- Patent number 6,134,368
- Issue date Oct 17, 2000
- NEC Corporation
- Yasutaka Sakata
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electro-absorption type semiconductor optical modulator having a qu...
- Patent number 6,100,543
- Issue date Aug 8, 2000
- NEC Corporation
- Yasutaka Sakata
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Method of manufacturing optical semiconductor device
- Patent number 6,036,771
- Issue date Mar 14, 2000
- NEC Corporation
- Yasutaka Sakata
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Photosemiconductor device and method of fabricating the same
- Patent number 5,913,107
- Issue date Jun 15, 1999
- NEC Corporation
- Yasutaka Sakata
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Semiconductor optical waveguide and method of fabricating the same
- Patent number 5,891,748
- Issue date Apr 6, 1999
- NEC Corporation
- Yasutaka Sakata
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Light emitting device having current blocking structure
- Patent number 5,847,415
- Issue date Dec 8, 1998
- NEC Corporation
- Yasutaka Sakata
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Semiconductor optical integrated device
- Patent number 5,790,580
- Issue date Aug 4, 1998
- NEC Corporation
- Yasutaka Sakata
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Semiconductor optical integrated circuits and method for fabricatin...
- Patent number 5,770,466
- Issue date Jun 23, 1998
- NEC Corporation
- Tatsuya Sasaki
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method for fabricating optical semiconductor device
- Patent number 5,756,373
- Issue date May 26, 1998
- NEC Corporation
- Yasutaka Sakata
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor optical waveguide and method of fabricating the same
- Patent number 5,678,935
- Issue date Oct 21, 1997
- NEC Corporation
- Yasutaka Sakata
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Fabrication process for semiconductor optical device
- Patent number 5,580,818
- Issue date Dec 3, 1996
- NEC Corporation
- Yasutaka Sakata
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor optical integrated circuits
- Patent number 5,565,693
- Issue date Oct 15, 1996
- NEC Corporation
- Tatsuya Sasaki
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of making tunable semiconductor laser
- Patent number 5,284,791
- Issue date Feb 8, 1994
- NEC Corporation
- Yasutaka Sakata
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING SAME
- Publication number 20090092164
- Publication date Apr 9, 2009
- NEC ELECTRONICS CORPORATION
- Yasutaka SAKATA
- B82 - NANO-TECHNOLOGY
Information Patent Application
DISTRIBUTED FEEDBACK LASER DIODE
- Publication number 20070280321
- Publication date Dec 6, 2007
- NEC Electronics Corporation
- Shotaro Kitamura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Optical semiconductor device and process for producing the same
- Publication number 20040156411
- Publication date Aug 12, 2004
- NEC Corporation
- Yasutaka Sakata
- G02 - OPTICS
Information Patent Application
Optical semiconductor device and method for manufacturing the same
- Publication number 20030160249
- Publication date Aug 28, 2003
- NEC Compound Semiconductor Devices, Ltd.
- Yasutaka Sakata
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Laser elements having different wavelengths formed from one semicon...
- Publication number 20020101897
- Publication date Aug 1, 2002
- Yasutaka Sakata
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Optical semiconductor device having active layer and carrier recomb...
- Publication number 20020042155
- Publication date Apr 11, 2002
- Yasutaka Sakata
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Optical semiconductor device, method for manufacturing the same, an...
- Publication number 20020003914
- Publication date Jan 10, 2002
- Yasutaka Sakata
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
FABRICATING METHOD OF OPTICAL SEMICONDUCTOR DEVICE
- Publication number 20010041379
- Publication date Nov 15, 2001
- Yasutaka Sakata
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Optical semiconductor device and method for manufacturing the same
- Publication number 20010019568
- Publication date Sep 6, 2001
- Yasutaka Sakata
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Laser elements having different wavelengths formed from one semicon...
- Publication number 20010005391
- Publication date Jun 28, 2001
- NEC Corporation
- Yasutaka Sakata
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Method of producing an optical semiconductor device having a wavegu...
- Publication number 20010001612
- Publication date May 24, 2001
- Yasumasa Inomoto
- B82 - NANO-TECHNOLOGY

Yasutaka Sakata

Person

Patents Grantslast 30 patents

Optical semiconductor device and method of manufacturing same

Distributed feedback laser diode

Optical semiconductor device and process for producing the same

Optical semiconductor device and method for manufacturing the same

Optical semiconductor device and process for producing the same

Fabricating method of optical semiconductor device

Method of producing an optical semiconductor device having a wavegu...

Optical semiconductor device and method of fabricating the same

Optical semiconductor device having active layer and carrier recomb...

Optical semiconductor device having waveguide layers buried in an I...

Optical semiconductor device and method of fabricating the same

Optical semiconductor device with a current blocking structure and...

Electro-absorption type semiconductor optical modulator having a qu...

Method of manufacturing optical semiconductor device

Photosemiconductor device and method of fabricating the same

Semiconductor optical waveguide and method of fabricating the same

Light emitting device having current blocking structure

Semiconductor optical integrated device

Semiconductor optical integrated circuits and method for fabricatin...

Method for fabricating optical semiconductor device

Semiconductor optical waveguide and method of fabricating the same

Fabrication process for semiconductor optical device

Semiconductor optical integrated circuits

Method of making tunable semiconductor laser

Patents Applicationslast 30 patents

OPTICAL SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING SAME

DISTRIBUTED FEEDBACK LASER DIODE

Optical semiconductor device and process for producing the same

Optical semiconductor device and method for manufacturing the same

Laser elements having different wavelengths formed from one semicon...

Optical semiconductor device having active layer and carrier recomb...

Optical semiconductor device, method for manufacturing the same, an...

FABRICATING METHOD OF OPTICAL SEMICONDUCTOR DEVICE

Optical semiconductor device and method for manufacturing the same

Laser elements having different wavelengths formed from one semicon...

Method of producing an optical semiconductor device having a wavegu...