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Masaki Itoh
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Tokyo, JP
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last 30 patents
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Patent Grant
Optical information recording medium and methods for recording, rea...
Patent number
6,606,293
Issue date
Aug 12, 2003
NEC Corporation
Mitsuya Okada
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical recording media
Patent number
6,117,511
Issue date
Sep 12, 2000
NEC Corporation
Mitsuya Okada
G11 - INFORMATION STORAGE
Information
Patent Grant
Method for protecting data recorded on a partial read-only memory (...
Patent number
5,790,499
Issue date
Aug 4, 1998
NEC Corporation
Masaki Itoh
G11 - INFORMATION STORAGE
Information
Patent Grant
Method for protecting data recorded on a partial read-only memory (...
Patent number
5,654,950
Issue date
Aug 5, 1997
NEC Corporation
Masaki Itoh
G11 - INFORMATION STORAGE
Information
Patent Grant
Magneto-optical recording medium, recording and playback method and...
Patent number
5,473,583
Issue date
Dec 5, 1995
NEC Corporation
Masaki Itoh
G11 - INFORMATION STORAGE
Information
Patent Grant
Magneto-optical recording medium with amorphous alloy film layers
Patent number
5,398,219
Issue date
Mar 14, 1995
NEC Corporation
Masaki Itoh
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical information recording medium comprising two magneto-optical...
Patent number
5,362,537
Issue date
Nov 8, 1994
NEC Corporation
Masaki Itoh
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical information recording medium in which a protective layer co...
Patent number
5,292,592
Issue date
Mar 8, 1994
NEC Corporation
Masaki Itoh
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical information recording medium
Patent number
4,839,208
Issue date
Jun 13, 1989
NEC Corporation
Katsuji Nakagawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical information storage medium
Patent number
4,775,568
Issue date
Oct 4, 1988
NEC Corporation
Masaki Itoh
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical information storage medium
Patent number
4,763,139
Issue date
Aug 9, 1988
NEC Corporation
Masaki Itoh
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical recording medium
Patent number
4,740,447
Issue date
Apr 26, 1988
NEC Corporation
Masaki Itoh
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical information recording medium for semiconductor laser
Patent number
4,504,548
Issue date
Mar 12, 1985
NEC Corporation
Sotaro Esho
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Information
Patent Grant
Negative resist and radical scavenger composition with capability o...
Patent number
4,279,986
Issue date
Jul 21, 1981
Nippon Electric Co., Ltd.
Yoshitake Ohnishi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY