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Hirohide Haga
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Kyoto, JP
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Patents Grants
last 30 patents
Information
Patent Grant
System for task tracking and controlling electronic mail
Patent number
6,434,603
Issue date
Aug 13, 2002
Hitachi, Ltd.
Hiroshi Tsuji
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
System for task tracking and controlling electronic mail
Patent number
6,047,315
Issue date
Apr 4, 2000
Hitachi, Ltd.
Hiroshi Tsuji
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
System for task tracking and controlling electronic mail
Patent number
5,764,898
Issue date
Jun 9, 1998
Hitachi, Ltd.
Hiroshi Tsuji
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method of software development
Patent number
5,261,100
Issue date
Nov 9, 1993
Hitachi, Ltd.
Tsutomu Fujinami
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Computer assisted learning support system and processing method the...
Patent number
5,211,563
Issue date
May 18, 1993
Hitachi, Ltd.
Hirohide Haga
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Grant
Method for translating data base to knowledge and apparatus therefor
Patent number
4,943,933
Issue date
Jul 24, 1990
Hitachi, Ltd.
Hironori Miyamoto
G06 - COMPUTING CALCULATING COUNTING