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Kawasaki, JP
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last 30 patents
Information
Patent Grant
Signalling apparatus for use in an ATM switching system
Patent number
5,303,236
Issue date
Apr 12, 1994
Hitachi, Ltd.
Masao Kunimoto
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
ATM switching system and adaptation processing apparatus
Patent number
5,214,642
Issue date
May 25, 1993
Hitachi, Ltd.
Masao Kunimoto
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Interconnection system and method for heterogeneous networks
Patent number
5,208,811
Issue date
May 4, 1993
Hitachi, Ltd.
Jiro Kashio
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Signalling apparatus for use in an ATM switching system
Patent number
5,101,404
Issue date
Mar 31, 1992
Hitachi, Ltd.
Masao Kunimoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Packet congestion control method and packet switching equipment
Patent number
5,090,011
Issue date
Feb 18, 1992
Hitachi, Ltd.
Isao Fukuta
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method of controlling the operation of stations in a ring network
Patent number
5,023,871
Issue date
Jun 11, 1991
Hitachi, Ltd.
Susumu Nakayashiki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for testing station address in network
Patent number
4,984,233
Issue date
Jan 8, 1991
Hitachi, Ltd.
Susumu Nakayashiki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Ring network system and configuration control method
Patent number
4,899,142
Issue date
Feb 6, 1990
Hitachi, Ltd.
Susumu Nakayashiki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Data communication network system and reconfiguration control method
Patent number
4,887,256
Issue date
Dec 12, 1989
Hitachi, Ltd.
Susumu Nakayashiki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Data memory system
Patent number
4,881,167
Issue date
Nov 14, 1989
Hitachi, Ltd.
Hisao Sasaki
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Transmission method for control information in communication network
Patent number
4,875,208
Issue date
Oct 17, 1989
Hitachi, Ltd.
Koshi Furuhashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Communication system using switching apparatus
Patent number
4,837,816
Issue date
Jun 6, 1989
Hitachi, Ltd.
Noboru Mizuhara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Data communication network system and reconfiguration control method
Patent number
4,815,069
Issue date
Mar 21, 1989
Hitachi, Ltd.
Susumu Nakayashiki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Network system diagnosis system
Patent number
4,777,330
Issue date
Oct 11, 1988
Hitachi, Ltd.
Susumu Nakayashiki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Routing control method in a packet switching network
Patent number
4,771,424
Issue date
Sep 13, 1988
Hitachi, Ltd.
Michio Suzuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Ring communication network system and a method for controlling same
Patent number
4,763,315
Issue date
Aug 9, 1988
Hitachi, Ltd.
Susumu Nakayashiki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Local area network communication system
Patent number
4,672,607
Issue date
Jun 9, 1987
Hitachi, Ltd.
Susumu Nakayashiki
H04 - ELECTRIC COMMUNICATION TECHNIQUE