Takeharu Yamaguchi

Person

Chiyoda-ku, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Undersea cable, undersea cable installation structure, and method f...
- Patent number 9,722,406
- Issue date Aug 1, 2017
- Furukawa Electric Co., Ltd.
- Hiroki Manabe
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Optical device having a carrier-depleted layer
- Patent number 6,911,713
- Issue date Jun 28, 2005
- The Furukawa Electric Co., Ltd.
- Nariaki Ikeda
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor optical device and method for fabricating same
- Patent number 6,821,798
- Issue date Nov 23, 2004
- The Furukawa Electric Co., Ltd.
- Satoshi Arakawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor laser device
- Patent number 6,810,063
- Issue date Oct 26, 2004
- The Furukawa Electric Co., Ltd.
- Toshikazu Mukaihara
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor laser
- Patent number 6,738,405
- Issue date May 18, 2004
- The Furukawa Electric Co., Ltd.
- Takeharu Yamaguchi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor laser module
- Patent number 6,683,902
- Issue date Jan 27, 2004
- The Furukawa Electric Co., Ltd.
- Yutaka Ohki
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor light emitting device
- Patent number 6,545,296
- Issue date Apr 8, 2003
- The Furukawa Electric Co., Ltd.
- Toshikazu Mukaihara
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical amplifier, light source module and optical system
- Patent number 6,532,107
- Issue date Mar 11, 2003
- The Furukawa Electric Co., Ltd.
- Takeharu Yamaguchi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor laser module
- Patent number 6,524,016
- Issue date Feb 25, 2003
- The Furukawa Electric Co., Ltd.
- Yutaka Ohki
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Waveguide-type variable-sensitivity semiconductor photodetector
- Patent number 6,115,116
- Issue date Sep 5, 2000
- The Furukawa Electric Co., Ltd.
- Junji Yoshida
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor photodetector having an optical attenuator
- Patent number 5,973,339
- Issue date Oct 26, 1999
- The Furukawa Electric Co. Ltd.
- Noriyuki Yokouchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical semiconductor device having a semiconductor laminate mirror
- Patent number 5,929,461
- Issue date Jul 27, 1999
- The Furukawa Electric Co., Ltd.
- Takeharu Yamaguchi
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
UNDERSEA CABLE, UNDERSEA CABLE INSTALLATION STRUCTURE, AND METHOD F...
- Publication number 20160301198
- Publication date Oct 13, 2016
- FURUKAWA ELECTRIC CO., LTD.
- Hiroki MANABE
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Optical device having a carrier-depleted layer
- Publication number 20040048406
- Publication date Mar 11, 2004
- THE FURUKAWA ELECTRIC CO., LTD.
- Nariaki Ikeda
- B82 - NANO-TECHNOLOGY
Information Patent Application
Semiconductor optical device and method for fabricating same
- Publication number 20020105992
- Publication date Aug 8, 2002
- The Furukawa Electric CO., LTD
- Satoshi Arakawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Semiconductor optical device having reduced parasitic capacitance
- Publication number 20020100911
- Publication date Aug 1, 2002
- The Furukawa Electric CO., LTD
- Satoshi Arakawa
- B82 - NANO-TECHNOLOGY
Information Patent Application
Optical amplifier, light source module and optical system
- Publication number 20020039227
- Publication date Apr 4, 2002
- THE FURUKAWA ELECTRIC CO., LTD.
- Takeharu Yamaguchi
- H01 - BASIC ELECTRIC ELEMENTS

Takeharu Yamaguchi

Person

Patents Grantslast 30 patents

Undersea cable, undersea cable installation structure, and method f...

Optical device having a carrier-depleted layer

Semiconductor optical device and method for fabricating same

Semiconductor laser device

Semiconductor laser

Semiconductor laser module

Semiconductor light emitting device

Optical amplifier, light source module and optical system

Semiconductor laser module

Waveguide-type variable-sensitivity semiconductor photodetector

Semiconductor photodetector having an optical attenuator

Optical semiconductor device having a semiconductor laminate mirror

Patents Applicationslast 30 patents

UNDERSEA CABLE, UNDERSEA CABLE INSTALLATION STRUCTURE, AND METHOD F...

Optical device having a carrier-depleted layer

Semiconductor optical device and method for fabricating same

Semiconductor optical device having reduced parasitic capacitance

Optical amplifier, light source module and optical system