Katsuhiko Yoneda

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Ibaraki-ken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Data transmission method and system for hub-based network
- Patent number 5,724,350
- Issue date Mar 3, 1998
- Hitachi, Ltd.
- Takuji Hamada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Data transmission method and system for hub-based network
- Patent number 5,657,327
- Issue date Aug 12, 1997
- Hitachi, Ltd.
- Takuji Hamada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Multi-slot access system
- Patent number 4,949,336
- Issue date Aug 14, 1990
- Hitachi, Ltd.
- Takuji Hamada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for detecting a fault in a ring network data t...
- Patent number 4,855,993
- Issue date Aug 8, 1989
- 501 Hitachi, Ltd.
- Takuji Hamada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE