Yoshihiro Nishikawa

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Hitachi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Security system and method of security service business
- Patent number 7,091,870
- Issue date Aug 15, 2006
- Hitachi, Ltd.
- Hirofumi Tsutsumi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Detection method and detection device of special drugs
- Patent number 7,002,145
- Issue date Feb 21, 2006
- Hitachi, Ltd.
- Masaki Ishikawa
- G01 - MEASURING TESTING
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
Hazardous material detection system
- Patent number 6,940,067
- Issue date Sep 6, 2005
- Hitachi, Ltd.
- Keiko Nakashige
- G01 - MEASURING TESTING
Information Patent Grant
Hazardous material detection system
- Patent number 6,806,450
- Issue date Oct 19, 2004
- Hitachi, Ltd.
- Keiko Nakashige
- G01 - MEASURING TESTING
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
Detection method and detection device of special drugs
- Publication number 20060226358
- Publication date Oct 12, 2006
- Hitachi, Ltd.
- Masaki Ishikawa
- G01 - MEASURING TESTING
Information Patent Application
Hazardous material detection system
- Publication number 20040245449
- Publication date Dec 9, 2004
- Hitachi, Ltd.
- Keiko Nakashige
- G01 - MEASURING TESTING
Information Patent Application
Detection method and detection device of special drugs
- Publication number 20040195499
- Publication date Oct 7, 2004
- Masaki Ishikawa
- G01 - MEASURING TESTING
Information Patent Application
Hazardous material detection system
- Publication number 20030234357
- Publication date Dec 25, 2003
- Keiko Nakashige
- G01 - MEASURING TESTING
Information Patent Application
Security system and method of security service business
- Publication number 20030009661
- Publication date Jan 9, 2003
- Hirofumi Tsutsumi
- H01 - BASIC ELECTRIC ELEMENTS
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