Sachiko Ishikawa

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Braunschweig, DE

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Patents Grantslast 30 patents

Information Patent Grant
Optical pickup using waveguide
- Patent number 4,929,044
- Issue date May 29, 1990
- Hitachi, Ltd.
- Akira Arimoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup using a waveguide
- Patent number 4,861,128
- Issue date Aug 29, 1989
- Hitachi, Ltd.
- Sachiko Ishikawa
- G11 - INFORMATION STORAGE