Atsushi Umezawa

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical recording medium, reproduction apparatus, and tracking serv...
- Patent number 8,223,619
- Issue date Jul 17, 2012
- Sony Corporation
- Kunihiro Shioura
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Optical recording medium, reproduction apparatus, and tracking serv...
- Publication number 20050243697
- Publication date Nov 3, 2005
- SONY CORPORATION
- Kunihiro Shioura
- G11 - INFORMATION STORAGE