Akifumi Hashimoto

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Katano, JP

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Patents Grantslast 30 patents

Information Patent Grant
Objective lens driving unit
- Patent number 4,842,392
- Issue date Jun 27, 1989
- Matsushita Electric Industrial Co., Ltd.
- Hiroyuki Nakamura
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Objective lens element with peripheral diffraction structure and ce...
- Publication number 20080080357
- Publication date Apr 3, 2008
- Matsushita Electric Industrial Co., Ltd.
- Yasuhiro Tanaka
- G11 - INFORMATION STORAGE
Information Patent Application
Objective lens element for optical disks and optical head device in...
- Publication number 20050111336
- Publication date May 26, 2005
- MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
- Yasuhiro Tanaka
- G11 - INFORMATION STORAGE