Mitsuru Sakuma

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical waveguide device
- Patent number 9,002,165
- Issue date Apr 7, 2015
- Sumitomo Osaka Cement Co., Ltd.
- Masayuki Ichioka
- G02 - OPTICS
Information Patent Grant
Optical modulator
- Patent number 7,397,974
- Issue date Jul 8, 2008
- Sumitomo Osaka Cement Co., Ltd.
- Junichiro Ichikawa
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL WAVEGUIDE DEVICE
- Publication number 20140050440
- Publication date Feb 20, 2014
- SUMITOMO OSAKA CEMENT CO., LTD.
- Masayuki Ichioka
- G02 - OPTICS
Information Patent Application
Optical Waveguide Device and Method of Manufacturing the Same
- Publication number 20130084036
- Publication date Apr 4, 2013
- Sumitomo Osaka Cement Co., Ltd.
- Yuji YAMANE
- G02 - OPTICS
Information Patent Application
Optical modulator
- Publication number 20040264827
- Publication date Dec 30, 2004
- Junichiro Ichikawa
- G02 - OPTICS