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Odawara, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Method and device for recording and reproducing data
Patent number
6,577,462
Issue date
Jun 10, 2003
Hitachi, Ltd.
Jin Hamada
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic disc control apparatus with parallel data transfer between...
Patent number
6,578,136
Issue date
Jun 10, 2003
Hitachi, Ltd.
Takashi Oeda
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method and apparatus for recording and reproducing disk-type record...
Patent number
6,400,523
Issue date
Jun 4, 2002
Hitachi, Ltd.
Yukari Katayama
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic disc control apparatus with parallel data transfer between...
Patent number
6,311,236
Issue date
Oct 30, 2001
Hitachi, Ltd.
Takashi Oeda
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method and apparatus for recording and reproducing disk-type record...
Patent number
6,236,528
Issue date
May 22, 2001
Hitachi, Ltd.
Yukari Katayama
G11 - INFORMATION STORAGE
Information
Patent Grant
Rotational storage device
Patent number
6,201,655
Issue date
Mar 13, 2001
Hitachi, Ltd.
Mitsunobu Watanabe
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic disc control apparatus with parallel data transfer between...
Patent number
6,125,427
Issue date
Sep 26, 2000
Hitachi, Ltd.
Takashi Oeda
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method and apparatus for recording and reproducing disk-type record...
Patent number
6,108,158
Issue date
Aug 22, 2000
Hitachi, Ltd.
Yukari Katayama
G11 - INFORMATION STORAGE
Information
Patent Grant
Rotary memory storage device with cache control method and apparatus
Patent number
5,742,933
Issue date
Apr 21, 1998
Hitachi, Ltd.
Akira Kojima
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Magnetic disc control apparatus with parallel data transfer between...
Patent number
5,737,632
Issue date
Apr 7, 1998
Hitachi, Ltd.
Takashi Oeda
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method of and apparatus for recording on and reproducing from disk-...
Patent number
5,715,105
Issue date
Feb 3, 1998
Hitachi, Ltd.
Yukari Katayama
G11 - INFORMATION STORAGE
Information
Patent Grant
Cache control method and rotary storage device having cache control
Patent number
5,584,012
Issue date
Dec 10, 1996
Hitachi, Ltd.
Akira Kojima
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Data transferring system between host and I/O using a main buffer w...
Patent number
5,507,005
Issue date
Apr 9, 1996
Hitachi, Ltd.
Akira Kojima
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Read/write controlling apparatus for adjusting the data length of a...
Patent number
5,313,340
Issue date
May 17, 1994
Hitachi, Ltd.
Norikazu Takayama
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
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Patent Application
Magnetic disc control apparatus with parallel data transfer between...
Publication number
20020035653
Publication date
Mar 21, 2002
Takashi Oeda
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Method and apparatus for recording and reproducing disk-type record...
Publication number
20020021517
Publication date
Feb 21, 2002
Yukari Katayama
G11 - INFORMATION STORAGE