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Akira Kurano
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Odawara-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Cache control method and apparatus
Patent number
7,082,496
Issue date
Jul 25, 2006
Hitachi, Ltd.
Akira Yamamoto
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Disk array device with selectable method for generating redundant data
Patent number
6,961,816
Issue date
Nov 1, 2005
Hitachi, Ltd.
Eiju Katsuragi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Disk array device with selectable method for generating redundant data
Patent number
6,604,172
Issue date
Aug 5, 2003
Hitachi, Ltd.
Eiju Katsuragi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Parity storage unit, in a disk array system, for generating updated...
Patent number
6,473,867
Issue date
Oct 29, 2002
Hitachi, Ltd.
Akira Yamamoto
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Disk array device with selectable method for generating redundant data
Patent number
6,463,505
Issue date
Oct 8, 2002
Hitachi, Ltd.
Eiju Katsuragi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method of data migration
Patent number
6,374,327
Issue date
Apr 16, 2002
Hitachi, Ltd.
Hidetoshi Sakaki
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Disk array device with selectable method for generating redundant data
Patent number
6,269,424
Issue date
Jul 31, 2001
Hitachi, Ltd.
Eiju Katsuragi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method of data migration
Patent number
6,230,239
Issue date
May 8, 2001
Hitachi, Ltd.
Hidetoshi Sakaki
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Parity storage unit, in a disk array system, for generating updated...
Patent number
6,209,107
Issue date
Mar 27, 2001
Hitachi, Ltd.
Akira Yamamoto
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Cache control method and apparatus
Patent number
6,085,286
Issue date
Jul 4, 2000
Hitachi, Ltd.
Akira Yamamoto
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Parity storage unit, in a disk array system, for generating updated...
Patent number
6,032,263
Issue date
Feb 29, 2000
Hitachi, Ltd.
Akira Yamamoto
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Parity storage unit, in a disk array system for generating updated...
Patent number
5,826,002
Issue date
Oct 20, 1998
Hitachi, Ltd.
Akira Yamamoto
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Storage unit with parity generation function and storage systems us...
Patent number
5,734,812
Issue date
Mar 31, 1998
Hitachi, Ltd.
Akira Yamamoto
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Cache control by adding record identification information to partia...
Patent number
5,694,576
Issue date
Dec 2, 1997
Hitachi, Ltd.
Akira Yamamoto
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
On-line dumping system and disk sub-system
Patent number
5,606,684
Issue date
Feb 25, 1997
Hitachi, Ltd.
Toshio Nakano
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Cache control method and apparatus for storing data in a cache memo...
Patent number
5,497,472
Issue date
Mar 5, 1996
Hitachi, Ltd.
Akira Yamamoto
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
On-line dumping system and disk sub system
Patent number
5,410,666
Issue date
Apr 25, 1995
Hitachi, Ltd.
Toshio Nakano
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method of changing the track and recording data
Patent number
5,325,506
Issue date
Jun 28, 1994
Hitachi, Ltd.
Mamoru Tohchi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Rotating storage track format emulation
Patent number
5,315,451
Issue date
May 24, 1994
Hitachi, Ltd.
Masahiro Nakayama
G11 - INFORMATION STORAGE
Information
Patent Grant
Memory controller with a cache memory and control method of cache m...
Patent number
5,253,351
Issue date
Oct 12, 1993
Hitachi, Ltd.
Akira Yamamoto
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Backup control method and system in data processing system using id...
Patent number
5,226,157
Issue date
Jul 6, 1993
Hitachi, Ltd.
Toshio Nakano
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Buffered disk unit and method of transferring data therein
Patent number
5,187,778
Issue date
Feb 16, 1993
Hitachi, Ltd.
Akira Yamamoto
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method of changing the track and recording data
Patent number
5,179,684
Issue date
Jan 12, 1993
Hitachi, Ltd.
Mamoru Tohchi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Input/output system implementing several access paths for rerouting...
Patent number
5,119,488
Issue date
Jun 2, 1992
Hitachi, Ltd.
Hisashi Takamatsu
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Parallel transfer type director means
Patent number
4,870,565
Issue date
Sep 26, 1989
Hitachi, Ltd.
Akira Yamamoto
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Control system for interruption long data transfers between a disk...
Patent number
4,819,203
Issue date
Apr 4, 1989
Hitachi, Ltd.
Yoshiro Shiroyanagi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method of controlling erasing following format writing in a magneti...
Patent number
4,814,904
Issue date
Mar 21, 1989
Hitachi, Ltd.
Kimiko Shigihara
G11 - INFORMATION STORAGE
Information
Patent Grant
Multiple control system for disk storage and method for realizing same
Patent number
4,807,180
Issue date
Feb 21, 1989
Hitachi, Ltd.
Hisaharu Takeuchi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method for controlling to keep off defects on magnetic disks
Patent number
4,805,048
Issue date
Feb 14, 1989
Hitachi, Ltd.
Hisaharu Takeuchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Recording/reproducing method and apparatus of magnetic disk unit in...
Patent number
4,803,572
Issue date
Feb 7, 1989
Hitachi, Ltd.
Toshiyuki Haruna
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
Information
Patent Application
Cache control method and apparatus
Publication number
20040030828
Publication date
Feb 12, 2004
Hitachi, Ltd.
Akira Yamamoto
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Disk array device with selectable method for generating redundant data
Publication number
20040010661
Publication date
Jan 15, 2004
Hitachi, Ltd
Eiju Katsuragi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Disk array device with selectable method for generating redundant data
Publication number
20020184443
Publication date
Dec 5, 2002
Hitachi, Ltd
Eiju Katsuragi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Disk array device with selectable method for generating redundant data
Publication number
20010032294
Publication date
Oct 18, 2001
Hitachi, Ltd
Eiju Katsuragi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Parity storage unit, in a disk array system, for generating updated...
Publication number
20010013103
Publication date
Aug 9, 2001
Hitachi, Ltd.
Akira Yamamoto
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Method of data migration
Publication number
20010011324
Publication date
Aug 2, 2001
Hidetoshi Sakaki
G06 - COMPUTING CALCULATING COUNTING