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Yasushi Fukuda
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Odawara, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Method and apparatus for reading and writing information onto and f...
Patent number
6,836,454
Issue date
Dec 28, 2004
Hitachi, Ltd.
Manabu Sasaki
G11 - INFORMATION STORAGE
Information
Patent Grant
Apparatus for recording and reproducing data
Patent number
6,552,986
Issue date
Apr 22, 2003
Hitachi, Ltd.
Yasushi Fukuda
G11 - INFORMATION STORAGE
Information
Patent Grant
Multibeam optical disk record and reproduction apparatus and method
Patent number
6,493,297
Issue date
Dec 10, 2002
Hitachi, Ltd.
Soichi Isono
G11 - INFORMATION STORAGE
Information
Patent Grant
Method and apparatus for optical disk device
Patent number
6,490,236
Issue date
Dec 3, 2002
Hitachi, Ltd.
Yasushi Fukuda
G11 - INFORMATION STORAGE
Information
Patent Grant
Information reproducing method and apparatus
Patent number
5,708,640
Issue date
Jan 13, 1998
Hitachi, Ltd.
Yasushi Fukuda
G11 - INFORMATION STORAGE
Information
Patent Grant
Rotary type storage apparatus and control method thereof
Patent number
5,339,319
Issue date
Aug 16, 1994
Hitachi, Ltd.
Yuji Yamane
G11 - INFORMATION STORAGE
Information
Patent Grant
Information recording method and optical disk apparatus using same
Patent number
5,333,126
Issue date
Jul 26, 1994
Hitachi, Ltd.
Yasushi Fukuda
G11 - INFORMATION STORAGE
Information
Patent Grant
Data recording and reproducing system with error correction capabil...
Patent number
4,698,810
Issue date
Oct 6, 1987
Hitachi, Ltd.
Yasushi Fukuda
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
Information
Patent Application
Method and apparatus for reading and writing information onto and f...
Publication number
20020105872
Publication date
Aug 8, 2002
HITACHI, LTD.
Manabu Sasaki
G11 - INFORMATION STORAGE