Akira Ohsawa

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Higashimurayama, JP

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Patents Grantslast 30 patents

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Geometric processing system
- Patent number 5,056,045
- Issue date Oct 8, 1991
- Hitachi, Ltd.
- Akira Ohsawa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Geometric processing system
- Patent number 4,944,034
- Issue date Jul 24, 1990
- Hitachi, Ltd.
- Akira Ohsawa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Miniature computer with separate hand-held controller
- Patent number 4,364,112
- Issue date Dec 14, 1982
- Hitachi, Ltd.
- Toru Onodera
- G06 - COMPUTING CALCULATING COUNTING
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Miniature computer
- Patent number 4,308,561
- Issue date Dec 29, 1981
- Hitachi, Ltd.
- Toru Onodera
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Miniature computer capable of using a conventional audio cassette t...
- Patent number 4,253,143
- Issue date Feb 24, 1981
- Hitachi, Ltd.
- Toru Onodera
- G06 - COMPUTING CALCULATING COUNTING