Akira Chuma

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Ashigarakami, JP

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Patents Grantslast 30 patents

Information Patent Grant
Disc drive having 3.5 inch form factor housing and 2.5 inch form fa...
- Patent number 6,490,123
- Issue date Dec 3, 2002
- Hitachi, Ltd.
- Nobuyuki Okunaga
- G11 - INFORMATION STORAGE
Information Patent Grant
System for controlling data flow between plurality of host interfac...
- Patent number 5,603,062
- Issue date Feb 11, 1997
- Hitachi, Ltd.
- Masahiko Sato
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Mounting structure for information recording and reproducing apparatus
- Patent number 5,243,479
- Issue date Sep 7, 1993
- Hitachi Ltd.
- Kazuo Nakagoshi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk enclosure with detachable stator
- Patent number 5,008,573
- Issue date Apr 16, 1991
- Hitachi, Ltd.
- Osamu Beppu
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus for and method of writing/reading data into/from a flexib...
- Patent number 4,779,146
- Issue date Oct 18, 1988
- Hitachi, Ltd.
- Akira Chuma
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head assembly
- Patent number 4,766,509
- Issue date Aug 23, 1988
- Hitachi, Ltd.
- Yoshihiro Moribe
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for driving a disk
- Patent number 4,736,263
- Issue date Apr 5, 1988
- Hitachi, Ltd.
- Mikio Takahashi
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Magnetic disk drive and magnetic disk drive system
- Publication number 20020093758
- Publication date Jul 18, 2002
- Hitachi, Ltd.
- Nobuyuki Okunaga
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk drive and magnetic disk drive system
- Publication number 20020093759
- Publication date Jul 18, 2002
- Hitachi, Ltd.
- Nobuyuki Okunaga
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk drive and magnetic disk drive system
- Publication number 20020093760
- Publication date Jul 18, 2002
- Hitachi, Ltd.
- Nobuyuki Okunaga
- G11 - INFORMATION STORAGE