David Cohn

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Seattle, WA, US

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Patents Grantslast 30 patents

Information Patent Grant
Knowledge based information retrieval system
- Patent number 6,182,062
- Issue date Jan 30, 2001
- Hitachi, Ltd.
- Hiromichi Fujisawa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Knowledge based information retrieval system
- Patent number 5,555,408
- Issue date Sep 10, 1996
- Hitachi, Ltd.
- Hiromichi Fujisawa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Knowledge based information retrieval system
- Patent number 5,404,506
- Issue date Apr 4, 1995
- Hitachi, Ltd.
- Hiromichi Fujisawa
- G06 - COMPUTING CALCULATING COUNTING