Takeo Sonobe

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Hitachi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Information storage and processing
- Patent number 5,471,606
- Issue date Nov 28, 1995
- The Regents of the University of California
- Han Huang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Information system using designating areas for retrieving/convertin...
- Patent number 5,410,676
- Issue date Apr 25, 1995
- The Regents of the University of California
- Han K. Huang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Optical information recording disc and apparatus for driving the disc
- Patent number 5,072,438
- Issue date Dec 10, 1991
- Hitachi Maxell, Ltd.
- Masahiro Suzuki
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk cartridge
- Patent number 5,040,167
- Issue date Aug 13, 1991
- Hitachi Maxell, Ltd.
- Yoshito Tanaka
- G11 - INFORMATION STORAGE
Information Patent Grant
Alignment disk for magnetic disk driving apparatus and method and a...
- Patent number 4,992,893
- Issue date Feb 12, 1991
- Hitachi, Ltd.
- Hiroshi Kanai
- G11 - INFORMATION STORAGE
Information Patent Grant
Removable disk construction
- Patent number 4,796,140
- Issue date Jan 3, 1989
- Hitachi, Ltd.
- Manabu Wakabayashi
- G11 - INFORMATION STORAGE