Masato Tsukakoshi

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for sharing network information and a router apparatus
- Patent number 6,577,634
- Issue date Jun 10, 2003
- Hitachi, Ltd.
- Masato Tsukakoshi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Scalable cluster-type router device and configuring method thereof
- Patent number 6,496,510
- Issue date Dec 17, 2002
- Hitachi, Ltd.
- Masato Tsukakoshi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System and method for using active and standby routers wherein both...
- Patent number 6,490,246
- Issue date Dec 3, 2002
- Hitachi, Ltd.
- Hidehiro Fukushima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Multiplex router device comprising a function for controlling a tra...
- Patent number 6,049,524
- Issue date Apr 11, 2000
- Hitachi, Ltd.
- Hidehiro Fukushima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication network system having a plurality of different protoc...
- Patent number 5,086,426
- Issue date Feb 4, 1992
- Hitachi, Ltd.
- Masato Tsukakoshi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Network system comprising a plurality of LANs using hierarchical ro...
- Patent number 5,018,133
- Issue date May 21, 1991
- Hitachi, Ltd.
- Masato Tsukakoshi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Method for sharing network information and a router apparatus
- Publication number 20030198214
- Publication date Oct 23, 2003
- Masato Tsukakoshi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
ROUTER DEVICE HAVING A REDUNDANT CONFIGURATION
- Publication number 20020060986
- Publication date May 23, 2002
- HIDEHIRO FUKUSHIMA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE