Tohru Sugamata

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical control element
- Patent number 7,912,325
- Issue date Mar 22, 2011
- Sumitomo Osaka Cement Co., Ltd.
- Tohru Sugamata
- G02 - OPTICS
Information Patent Grant
Traveling-wave-type optical modulator and method of adjusting the same
- Patent number 7,558,444
- Issue date Jul 7, 2009
- Sumitomo Osaka Cement Co., Ltd.
- Ryo Shimizu
- G02 - OPTICS
Information Patent Grant
Optical modulator
- Patent number 7,444,039
- Issue date Oct 28, 2008
- Sumitomo Osaka Cement Co., Ltd.
- Katsutoshi Kondou
- G02 - OPTICS
Information Patent Grant
Optical waveguide element
- Patent number 7,035,488
- Issue date Apr 25, 2006
- Sumitomo Osaka Cement Co., Ltd.
- Tohru Sugamata
- G02 - OPTICS
Information Patent Grant
Light modulator of waveguide type
- Patent number 6,522,792
- Issue date Feb 18, 2003
- Sumitomo Osaka Cement Co., Ltd.
- Tohru Sugamata
- G02 - OPTICS
Information Patent Grant
Optical waveguide modulator device
- Patent number 5,982,958
- Issue date Nov 9, 1999
- Sumitomo Osaka Cement Co., Ltd.
- Junichiro Minowa
- G02 - OPTICS
Information Patent Grant
Optical modulator with optical waveguide and traveling-wave type el...
- Patent number 5,748,358
- Issue date May 5, 1998
- Sumitomo Osaka Cement Co., Ltd.
- Tohru Sugamata
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Optical control element
- Publication number 20090202189
- Publication date Aug 13, 2009
- Sumitomo Osaka Cement Co., Ltd.
- Tohru Sugamata
- G02 - OPTICS
Information Patent Application
Traveling-Wave-Type Optical Modulator and Method of Adjusting the Same
- Publication number 20080240644
- Publication date Oct 2, 2008
- Sumitomo Osaka Cement Co. Ltd
- Ryo Shimizu
- G02 - OPTICS
Information Patent Application
Optical modulator
- Publication number 20080002926
- Publication date Jan 3, 2008
- Sumitomo Osaka Cement Co., Ltd.
- Katsutoshi Kondou
- G02 - OPTICS
Information Patent Application
Optical waveguide element
- Publication number 20050157970
- Publication date Jul 21, 2005
- Sumitomo Osaka Cement Co., Ltd.
- Tohru Sugamata
- G02 - OPTICS
Information Patent Application
Optical waveguide
- Publication number 20030007711
- Publication date Jan 9, 2003
- Tohru Sugamata
- G02 - OPTICS