Hiroyuki Ishikawa

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Suwa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical system having a precision angular displacement mechanism in...
- Patent number 5,446,712
- Issue date Aug 29, 1995
- Seiko Epson Corporation
- Tadashi Yamada
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical reporting reproducing device having fixed and movable optic...
- Patent number 5,444,683
- Issue date Aug 22, 1995
- Seiko Epson Corporation
- Hiroyuki Ishikawa
- G11 - INFORMATION STORAGE