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Takafumi Oka
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Odawara, JP
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last 30 patents
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Patent Grant
Peripheral device using two microprocessors and two buses for autom...
Patent number
5,774,742
Issue date
Jun 30, 1998
Hitachi, Ltd.
Takahiro Nakamura
G11 - INFORMATION STORAGE
Information
Patent Grant
Program rewriting method and apparatus for multiprocessor system
Patent number
5,748,967
Issue date
May 5, 1998
Hitachi, Ltd.
Takahiro Nakamura
G11 - INFORMATION STORAGE
Information
Patent Grant
Storage apparatus including a semiconductor memory and a disk drive
Patent number
4,908,793
Issue date
Mar 13, 1990
Hitachi, Ltd.
Hirotsugu Yamagata
G11 - INFORMATION STORAGE
Information
Patent Grant
Error correction system
Patent number
4,775,979
Issue date
Oct 4, 1988
Hitachi, Ltd.
Takafumi Oka
G06 - COMPUTING CALCULATING COUNTING
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
Information
Patent Grant
Information recording system and method for using alternative recor...
Patent number
4,638,472
Issue date
Jan 20, 1987
Hitachi, Ltd.
Mikito Ogata
G11 - INFORMATION STORAGE
Information
Patent Grant
Feedback shift register
Patent number
4,160,236
Issue date
Jul 3, 1979
Hitachi, Ltd.
Takafumi Oka
G11 - INFORMATION STORAGE