Masami Shimizu

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Ota, JP

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for discriminating optical recording media of different t...
- Patent number 6,201,777
- Issue date Mar 13, 2001
- Sanyo Electric Co., Ltd.
- Yoichi Tsuchiya
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus for discriminating optical recording media of different t...
- Patent number 5,917,791
- Issue date Jun 29, 1999
- Sanyo Electric Co., Ltd.
- Yoichi Tsuchiya
- G11 - INFORMATION STORAGE
Information Patent Grant
Electric mechanical transducer and optical type pickup apparatus dr...
- Patent number 4,845,699
- Issue date Jul 4, 1989
- Sanyo Electric Co., Ltd.
- Ryoichi Kawasaki
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical type pickup apparatus with lens holder supported by frame w...
- Patent number 4,811,320
- Issue date Mar 7, 1989
- Sanyo Electric Co., Ltd.
- Ryoichi Kawasaki
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup device wherein the astigmatic converged beam spot is...
- Patent number 4,767,921
- Issue date Aug 30, 1988
- Sanyo Electric Co., Ltd.
- Ryoichi Kawasaki
- G11 - INFORMATION STORAGE