Takahiko Kawahara

Person

Yokohama-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Infrared-ray sensing device
- Patent number 9,899,549
- Issue date Feb 20, 2018
- Sumitomo Electric Industries, Ltd.
- Kenichi Machinaga
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Laser diode
- Patent number 8,340,147
- Issue date Dec 25, 2012
- Sumitomo Electric Industries, Ltd.
- Noriaki Kaida
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor laser and the method for manufacturing the same
- Patent number 7,723,132
- Issue date May 25, 2010
- Sumitomo Electric Industries, Ltd.
- Takahiko Kawahara
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Distributed feedback laser diode and a method for manufacturing the...
- Patent number 7,627,011
- Issue date Dec 1, 2009
- Sumitomo Electric Industries, Ltd.
- Takahiko Kawahara
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor laser and the method for manufacturing the same
- Patent number 7,460,575
- Issue date Dec 2, 2008
- Sumitomo Electric Industries, Ltd.
- Takahiko Kawahara
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor laser diode with emission efficiency independent of t...
- Patent number 7,408,965
- Issue date Aug 5, 2008
- Sumitomo Electric Industries, Ltd.
- Takahiko Kawahara
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor optical device and method of making the same
- Patent number 7,123,639
- Issue date Oct 17, 2006
- Sumitomo Electric Industries, Ltd.
- Takahiko Kawahara
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
LIGHT RECEIVING ELEMENT AND LIGHT DETECTOR
- Publication number 20240105752
- Publication date Mar 28, 2024
- Sumitomo Electric Industries, Ltd.
- Takahiko KAWAHARA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
INFRARED-RAY SENSING DEVICE
- Publication number 20170358696
- Publication date Dec 14, 2017
- Sumitomo Electric Industries, Ltd.
- Kenichi MACHINAGA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
LASER DIODE
- Publication number 20110090928
- Publication date Apr 21, 2011
- Sumitomo Electric Industries, Ltd.
- Noriaki KAIDA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Semiconductor laser and the method for manufacturing the same
- Publication number 20080299692
- Publication date Dec 4, 2008
- Takahiko Kawahara
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Semiconductor laser diode with emission efficiency independent of t...
- Publication number 20070258498
- Publication date Nov 8, 2007
- Takahiko Kawahara
- B82 - NANO-TECHNOLOGY
Information Patent Application
Distributed feedback laser diode and a method for manufacturing the...
- Publication number 20070160105
- Publication date Jul 12, 2007
- SUMITOMO ELECTRIC INDUSTRIES, LTD.
- Takahiko Kawahara
- B82 - NANO-TECHNOLOGY
Information Patent Application
Semiconductor light-emitting device
- Publication number 20060243992
- Publication date Nov 2, 2006
- SUMITOMO ELECTRIC INDUSTRIES, LTD.
- Nobuyuki Ikoma
- B82 - NANO-TECHNOLOGY
Information Patent Application
Semiconductor laser and the method for manufacturing the same
- Publication number 20060159145
- Publication date Jul 20, 2006
- Takahiko Kawahara
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Distributed feedback laser including AlGaInAs in feedback grating l...
- Publication number 20060146902
- Publication date Jul 6, 2006
- Nobuyuki Ikoma
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Semiconductor light-emitting device
- Publication number 20050189552
- Publication date Sep 1, 2005
- Nobuyuki Ikoma
- B82 - NANO-TECHNOLOGY
Information Patent Application
Semiconductor optical device and method of making the same
- Publication number 20050013335
- Publication date Jan 20, 2005
- Takahiko Kawahara
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Semiconductor optical device, semiconductor laser device, semicondu...
- Publication number 20040086015
- Publication date May 6, 2004
- Takahiko Kawahara
- H01 - BASIC ELECTRIC ELEMENTS

Takahiko Kawahara

Person

Patents Grantslast 30 patents

Infrared-ray sensing device

Laser diode

Semiconductor laser and the method for manufacturing the same

Distributed feedback laser diode and a method for manufacturing the...

Semiconductor laser and the method for manufacturing the same

Semiconductor laser diode with emission efficiency independent of t...

Semiconductor optical device and method of making the same

Patents Applicationslast 30 patents

LIGHT RECEIVING ELEMENT AND LIGHT DETECTOR

INFRARED-RAY SENSING DEVICE

LASER DIODE

Semiconductor laser and the method for manufacturing the same

Semiconductor laser diode with emission efficiency independent of t...

Distributed feedback laser diode and a method for manufacturing the...

Semiconductor light-emitting device

Semiconductor laser and the method for manufacturing the same

Distributed feedback laser including AlGaInAs in feedback grating l...

Semiconductor light-emitting device

Semiconductor optical device and method of making the same

Semiconductor optical device, semiconductor laser device, semicondu...