Tsunehiro Maruo

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical pickup apparatus including an optical rotation device
- Patent number 5,717,667
- Issue date Feb 10, 1998
- Sony Corporation
- Hideyoshi Horimai
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup apparatus including hologram element
- Patent number 5,663,940
- Issue date Sep 2, 1997
- Sony Corporation
- Hideyoshi Horimai
- G11 - INFORMATION STORAGE
Information Patent Grant
Data storage disk drive with a piezoelectric member and a resilient...
- Patent number 5,282,190
- Issue date Jan 25, 1994
- Sony Corporation
- Tsunehiro Maruo
- G11 - INFORMATION STORAGE
Information Patent Grant
Position detecting signal generator
- Patent number 4,438,398
- Issue date Mar 20, 1984
- Sony Corporation
- Tsunehiro Maruo
- G01 - MEASURING TESTING