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Ryuichi Koike
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Yokohama, JP
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last 30 patents
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Patent Grant
Disk reproducing speed control method and a disk reproducing appara...
Patent number
5,963,517
Issue date
Oct 5, 1999
Hitachi, Ltd.
Harushige Nakagaki
G11 - INFORMATION STORAGE
Information
Patent Grant
Playback system for an optical disc representing a character or a g...
Patent number
5,875,156
Issue date
Feb 23, 1999
Hitachi, Ltd.
Tamotsu Ito
G11 - INFORMATION STORAGE
Information
Patent Grant
Information recording media and optical disk, disk having specific...
Patent number
5,751,671
Issue date
May 12, 1998
Hitachi, Ltd.
Ryuichi Koike
G11 - INFORMATION STORAGE
Information
Patent Grant
Playback system for an optical disc presenting a character or a gra...
Patent number
5,737,306
Issue date
Apr 7, 1998
Hitachi, Ltd.
Tamotsu Ito
G11 - INFORMATION STORAGE
Information
Patent Grant
Information recording media and optical disc presenting a character...
Patent number
5,608,717
Issue date
Mar 4, 1997
Hitachi, Ltd.
Tamotsu Ito
G11 - INFORMATION STORAGE
Information
Patent Grant
Apparatus for damping rotation of turntable
Patent number
4,127,799
Issue date
Nov 28, 1978
Hitachi, Ltd.
Tsutomu Nakamura
G11 - INFORMATION STORAGE