Hideaki Oba

Person

Yokohama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
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- Patent number 4,891,305
- Issue date Jan 2, 1990
- Ricoh Co., Ltd.
- Hideaki Oba
- G11 - INFORMATION STORAGE
Information Patent Grant
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- Patent number 4,767,693
- Issue date Aug 30, 1988
- Ricoh Co., Ltd.
- Hideaki Oba
- G11 - INFORMATION STORAGE
Information Patent Grant
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- Patent number 4,758,499
- Issue date Jul 19, 1988
- Ricoh Co., Ltd.
- Michiharu Abe
- G11 - INFORMATION STORAGE
Information Patent Grant
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- Patent number 4,752,554
- Issue date Jun 21, 1988
- Ricoh Co., Ltd.
- Tsutomu Sato
- G11 - INFORMATION STORAGE
Information Patent Grant
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- Patent number 4,714,667
- Issue date Dec 22, 1987
- Ricoh Co., Ltd.
- Tsutomu Sato
- G11 - INFORMATION STORAGE
Information Patent Grant
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- Patent number 4,696,892
- Issue date Sep 29, 1987
- Ricoh Co., Ltd.
- Michiharu Abe
- G11 - INFORMATION STORAGE
Information Patent Grant
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- Patent number 4,656,121
- Issue date Apr 7, 1987
- Ricoh Co., Ltd.
- Tsutomu Sato
- G11 - INFORMATION STORAGE
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- Patent number 4,652,514
- Issue date Mar 24, 1987
- Ricoh Co., Ltd.
- Michiharu Abe
- B82 - NANO-TECHNOLOGY
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- Patent number 4,600,625
- Issue date Jul 15, 1986
- Ricoh Co., Ltd.
- Michiharu Abe
- G11 - INFORMATION STORAGE
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- Patent number 4,477,555
- Issue date Oct 16, 1984
- Ricoh Co., Ltd.
- Hideaki Oba
- G11 - INFORMATION STORAGE
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- Patent number 4,465,767
- Issue date Aug 14, 1984
- Ricoh Company, Ltd.
- Hideaki Oba
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
WRITE-ONCE-READ-MANY OPTICAL RECORDING MEDIUM AND RECORDING METHOD...
- Publication number 20100014394
- Publication date Jan 21, 2010
- RICOH COMPANY, LTD.
- Masayuki Fujiwara
- G11 - INFORMATION STORAGE

Hideaki Oba

Person

Patents Grantslast 30 patents

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Patents Applicationslast 30 patents

WRITE-ONCE-READ-MANY OPTICAL RECORDING MEDIUM AND RECORDING METHOD...