Ryuichiro Shimizu

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Koriyama-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Liquid crystal lens element and optical head device
- Patent number 7,719,657
- Issue date May 18, 2010
- Asahi Glass Company, Limited
- Yoshiharu Ooi
- G11 - INFORMATION STORAGE
Information Patent Grant
Liquid crystal lens element and optical head device
- Patent number 7,388,822
- Issue date Jun 17, 2008
- Asahi Glass Company, Limited
- Yoshiharu Ooi
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Liquid crystal lens element and optical head device
- Publication number 20070146625
- Publication date Jun 28, 2007
- ASAHI GLASS COMPANY LIMITED
- Yoshiharu Ooi
- G02 - OPTICS
Information Patent Application
Liquid crystal lens element and optical head device
- Publication number 20060280100
- Publication date Dec 14, 2006
- ASAHI GLASS COMPANY LIMITED
- Yoshiharu Ooi
- G02 - OPTICS