Yasuharu Shimizu

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
System and method for distributing key
- Patent number 7,245,722
- Issue date Jul 17, 2007
- Osamu Hirota
- Osamu Hirota
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
System and method for distributing key
- Publication number 20020048370
- Publication date Apr 25, 2002
- Matsushita Electric Industrial Co., Ltd.
- Osamu Hirota
- H04 - ELECTRIC COMMUNICATION TECHNIQUE