Masahito Matsunawa

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Kiyose, JP

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Patents Grantslast 30 patents

Information Patent Grant
Electronic business transaction system
- Patent number 7,590,597
- Issue date Sep 15, 2009
- Hitachi, Ltd.
- Naoki Takahashi
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Electronic business transaction system
- Patent number 7,428,511
- Issue date Sep 23, 2008
- Hitachi, Ltd.
- Naoki Takahashi
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Electronic business transaction system with notarization database a...
- Patent number 6,049,787
- Issue date Apr 11, 2000
- Hitachi, Ltd.
- Naoki Takahashi
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
Electronic business transaction system
- Publication number 20080313093
- Publication date Dec 18, 2008
- Naoki Takahashi
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Electronic business transaction system
- Publication number 20050010526
- Publication date Jan 13, 2005
- Naoki Takahashi
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Electronic business transaction system
- Publication number 20020095381
- Publication date Jul 18, 2002
- Naoki Takahashi
- G06 - COMPUTING CALCULATING COUNTING