Osamu Tsurumi

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Kawasaki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Packet repeater
- Patent number 7,636,299
- Issue date Dec 22, 2009
- Fujitsu Limited
- Akihiro Asa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Protection that automatic and speedily restore of Ethernet ring net...
- Patent number 7,440,397
- Issue date Oct 21, 2008
- Fujitsu Limited
- Osamu Tsurumi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Packet multiplexing control method and a concentrator using the same
- Patent number 7,304,946
- Issue date Dec 4, 2007
- Fujitsu Limited
- Kenichi Kawarai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
COMMUNICATION SYSTEM AND APPARATUS
- Publication number 20090245797
- Publication date Oct 1, 2009
- FUJITSU LIMITED
- Osamu TSURUMI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Ethernet® communication system relaying control signals
- Publication number 20070291763
- Publication date Dec 20, 2007
- FUJITSU LIMITED
- Hiroyuki Kaneko
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Packet repeater
- Publication number 20060215544
- Publication date Sep 28, 2006
- FUJITSU LIMITED
- Akihiro Asa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Protection that automatic and speedily restore of ethernet ring net...
- Publication number 20050207348
- Publication date Sep 22, 2005
- Osamu Tsurumi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Packet multiplexing control method and a concentrator using the same
- Publication number 20030081602
- Publication date May 1, 2003
- Kenichi Kawarai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE