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Kunio Hiyama
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Sagamihara, JP
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last 30 patents
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Patent Grant
High-speed ring lan system
Patent number
5,247,518
Issue date
Sep 21, 1993
Hitachi, Ltd.
Yoshihiro Takiyasu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Independent clocking local area network and nodes used for the same
Patent number
5,241,543
Issue date
Aug 31, 1993
Hitachi, Ltd.
Eiichi Amada
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Bridge apparatus and a communication system between networks using...
Patent number
5,220,562
Issue date
Jun 15, 1993
Hitachi, Ltd.
Osamu Takada
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
High-speed ring LAN system
Patent number
5,103,447
Issue date
Apr 7, 1992
Hitachi, Ltd.
Yoshihiro Takiyasu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and system for data transmission
Patent number
4,855,995
Issue date
Aug 8, 1989
Hitachi, Ltd.
Kunio Hiyama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Time-division multiplexing communication system for performing a pl...
Patent number
4,792,944
Issue date
Dec 20, 1988
Hitachi, Ltd.
Yasuhiro Takahashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Text mailing system using a telephone line
Patent number
4,506,111
Issue date
Mar 19, 1985
Hitachi, Ltd.
Hiroo Takenouchi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Bus priority control method in loop bus network system
Patent number
4,295,122
Issue date
Oct 13, 1981
Hitachi, Ltd.
Minoru Hatada
G06 - COMPUTING CALCULATING COUNTING