Atsuo Ohsawa

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for detecting a defect in a pixel of an electrical display u...
- Patent number 6,831,995
- Issue date Dec 14, 2004
- Hitachi, Ltd.
- Toshio Asano
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Rear projection type image display apparatus and transmission type...
- Patent number 5,613,748
- Issue date Mar 25, 1997
- Hitachi, Ltd.
- Takahiko Yoshida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Four head sequential switch scanning type magnetic recording/reprod...
- Patent number 5,109,305
- Issue date Apr 28, 1992
- Hitachi, Ltd.
- Atsuo Ohsawa
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Flat type image display device and its manufacture method
- Publication number 20070069629
- Publication date Mar 29, 2007
- Hitachi, Ltd
- Tetsu Ohishi
- H01 - BASIC ELECTRIC ELEMENTS