Masaaki Sudou

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Chiyoda-ku, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical control element having a plurality of optical control portions
- Patent number 8,983,239
- Issue date Mar 17, 2015
- Sumitomo Osaka Cement Co., Ltd.
- Masayuki Ichioka
- G02 - OPTICS
Information Patent Grant
Optical waveguide device
- Patent number 8,265,443
- Issue date Sep 11, 2012
- Sumitomo Osaka Cement Co., Ltd.
- Masaaki Sudou
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Optical control element
- Publication number 20120087616
- Publication date Apr 12, 2012
- Sumitomo Osaka Cement Co.
- Masayuki Ichioka
- G02 - OPTICS
Information Patent Application
Optical waveguide device
- Publication number 20100239218
- Publication date Sep 23, 2010
- Sumitomo Osaka Cement Co., Ltd.
- Masaaki Sudou
- G02 - OPTICS