Yasuo Kimura

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical head using birefringent diffraction grating
- Patent number 5,493,555
- Issue date Feb 20, 1996
- NEC Corporation
- Yasuo Kimura
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical head device for optimally detecting a focussing error
- Patent number 5,151,892
- Issue date Sep 29, 1992
- NEC Corporation
- Yasuo Kimura
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical head using a reflection grating
- Patent number 5,036,504
- Issue date Jul 30, 1991
- NEC Corporation
- Yuzo Ono
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical head comprising a diffraction grating for directing two or...
- Patent number 4,945,529
- Issue date Jul 31, 1990
- NEC Corporation
- Yuzo Ono
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for detecting a track and focus errors in an o...
- Patent number 4,841,508
- Issue date Jun 20, 1989
- NEC Corporation
- Yasuo Kimura
- G11 - INFORMATION STORAGE