Tomoyuki Hisada

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Taketoyo, 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

Patents Applicationslast 30 patents

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