Sako Ishikawa

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Hadano, JP

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Patents Grantslast 30 patents

Information Patent Grant
Uninterruptible clock supply apparatus for fault tolerant computer...
- Patent number 5,852,728
- Issue date Dec 22, 1998
- Hitachi, Ltd.
- Koji Matsuda
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Apparatus for decimal multiplication
- Patent number 4,677,583
- Issue date Jun 30, 1987
- Hitachi, Ltd.
- Toru Ohtsuki
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Binary coded decimal number division apparatus
- Patent number 4,635,220
- Issue date Jan 6, 1987
- Hitachi, Ltd.
- Hideaki Yabe
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Binary coded decimal number division apparatus
- Patent number 4,603,397
- Issue date Jul 29, 1986
- Hitachi, Ltd.
- Toru Ohtsuki
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Multiplication device using multiple-input adder
- Patent number 4,543,641
- Issue date Sep 24, 1985
- Hitachi, Ltd.
- Masaharu Fukuta
- G06 - COMPUTING CALCULATING COUNTING