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Hisamitsu Tanaka
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Yokohama, JP
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last 30 patents
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Patent Grant
Method and apparatus for detecting position of alternated land and...
Patent number
6,091,678
Issue date
Jul 18, 2000
Hitachi, Ltd.
Tetsuya Fushimi
G11 - INFORMATION STORAGE
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Patent Grant
Optical disc with phase pits and a reproducing apparatus for data r...
Patent number
5,541,909
Issue date
Jul 30, 1996
Hitachi, Ltd.
Junji Nakajima
G11 - INFORMATION STORAGE
Information
Patent Grant
Tracking control apparatus for controlling the tracking of a target...
Patent number
5,179,545
Issue date
Jan 12, 1993
Hitachi, Ltd.
Hisamitsu Tanaka
G11 - INFORMATION STORAGE