Sadao Iizuka

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Ora-gun, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical pickup device and manufacturing method thereof
- Patent number 7,672,197
- Issue date Mar 2, 2010
- Sanyo Electric Co., LTD
- Chikashi Yoshinaga
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup device
- Patent number 7,508,746
- Issue date Mar 24, 2009
- Sanyo Electric Co., LTD
- Hiroyuki Negishi
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Optical pickup device
- Publication number 20060062101
- Publication date Mar 23, 2006
- Sanyo Electric Co., Ltd.
- Hiroyuki Negishi
- G11 - INFORMATION STORAGE
Information Patent Application
Optical pickup device and manufacturing method thereof
- Publication number 20060007799
- Publication date Jan 12, 2006
- Sanyo Electric Co., Ltd.
- Chikashi Yoshinaga
- G11 - INFORMATION STORAGE