Akira Miyagawa

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for measuring crosstalk of optical disc
- Patent number 6,707,775
- Issue date Mar 16, 2004
- Sony Precision Technology Inc.
- Akira Miyagawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Device for inspecting the surface of disc-shaped recording medium
- Patent number 6,002,656
- Issue date Dec 14, 1999
- Sony Corporation
- Akira Miyagawa
- G11 - INFORMATION STORAGE