Masao Okafuji

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Recording/reproducing method of magnetic tape
- Patent number 7,593,177
- Issue date Sep 22, 2009
- Hitachi Maxell, Ltd.
- Masao Okafuji
- G11 - INFORMATION STORAGE
Information Patent Grant
Recording/reproducing method of magnetic tape
- Patent number 7,545,597
- Issue date Jun 9, 2009
- Hitachi Maxell, Ltd.
- Masao Okafuji
- G11 - INFORMATION STORAGE
Information Patent Grant
Recording/reproducing method of magnetic tape
- Patent number 7,253,988
- Issue date Aug 7, 2007
- Hitachi Maxell, Ltd.
- Masao Okafuji
- G11 - INFORMATION STORAGE
Information Patent Grant
Recording/reproducing method of magnetic tape
- Patent number 7,170,709
- Issue date Jan 30, 2007
- Hitachi Maxell, Ltd.
- Masao Okafuji
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
RECORDING/REPRODUCING METHOD OF MAGNETIC TAPE
- Publication number 20070285832
- Publication date Dec 13, 2007
- Masao Okafuji
- G11 - INFORMATION STORAGE
Information Patent Application
RECORDING/REPRODUCING METHOD OF MAGNETIC TAPE
- Publication number 20070097541
- Publication date May 3, 2007
- Masao Okafuji
- G11 - INFORMATION STORAGE
Information Patent Application
RECORDING/REPRODUCING METHOD OF MAGNETIC TAPE
- Publication number 20070086109
- Publication date Apr 19, 2007
- Masao Okafuji
- G11 - INFORMATION STORAGE
Information Patent Application
Recording/reproducing method of magnetic tape
- Publication number 20050254162
- Publication date Nov 17, 2005
- Hitachi Maxell, Ltd.
- Masao Okafuji
- G11 - INFORMATION STORAGE