Yasunobu Fujita

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Hitachi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for controlling coming and going personnel, and a system the...
- Patent number 6,975,227
- Issue date Dec 13, 2005
- Hitachi, Ltd.
- Yoshihiro Nishikawa
- G07 - CHECKING-DEVICES
Information Patent Grant
Method of controlling coming and going personnel, and a system thereof
- Patent number 6,621,414
- Issue date Sep 16, 2003
- Hitachi, Ltd.
- Yoshihiro Nishikawa
- G07 - CHECKING-DEVICES

Patents Applicationslast 30 patents

Information Patent Application
Method of controlling coming and going personnel, and a system thereof
- Publication number 20020024442
- Publication date Feb 28, 2002
- Yoshihiro Nishikawa
- G01 - MEASURING TESTING