Satoru Kayukawa

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Hitachinaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Time management system for passing vehicles
- Patent number 6,218,963
- Issue date Apr 17, 2001
- Hitachi, Ltd.
- Toshihiro Kawanabe
- G07 - CHECKING-DEVICES
Information Patent Grant
Method of and system for verifying operation concurrence in mainten...
- Patent number 5,737,513
- Issue date Apr 7, 1998
- Hitachi, Ltd.
- Koji Matsuda
- G06 - COMPUTING CALCULATING COUNTING