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Akira Okushi
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Tokyo, JP
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Patents Grants
last 30 patents
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Patent Grant
Digital information processing method
Patent number
7,196,986
Issue date
Mar 27, 2007
Hitachi, Ltd.
Hiroyuki Hayakawa
G11 - INFORMATION STORAGE
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Patent Grant
Method and apparatus for digital information processing
Patent number
6,816,444
Issue date
Nov 9, 2004
Hitachi, Ltd.
Hiroyuki Hayakawa
G11 - INFORMATION STORAGE
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Patent Grant
Method and apparatus for information recording medium
Patent number
6,631,107
Issue date
Oct 7, 2003
Hitachi, Ltd.
Tamotsu Ito
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
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Patent Application
Method and apparatus for digital information processing
Publication number
20050047293
Publication date
Mar 3, 2005
Hitachi, Ltd
Hiroyuki Hayakawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE