Shinichi Tsumori

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Patents Grantslast 30 patents

Information Patent Grant
Justification authenticating system, personal certificate issuing s...
- Patent number 7,127,614
- Issue date Oct 24, 2006
- Matsushita Electric Industrial Co., Ltd.
- Yuichi Kawaguchi
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Learning-support device and learning-support method
- Patent number 6,435,880
- Issue date Aug 20, 2002
- Matsushita Electric Industrial Co., Ltd.
- Shinichi Tsumori
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS

Patents Applicationslast 30 patents

Information Patent Application
IP packet transmission apparatus, IP packet transmission method, an...
- Publication number 20040160964
- Publication date Aug 19, 2004
- Shinichi Tsumori
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Justification authenticating system, personal certificate issuing s...
- Publication number 20010054149
- Publication date Dec 20, 2001
- Yuichi Kawaguchi
- G06 - COMPUTING CALCULATING COUNTING