Yoshiyuki Karakawa

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Hakata, JP

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Patents Grantslast 30 patents

Information Patent Grant
Signal distribution method and a signal distribution apparatus
- Patent number 7,593,425
- Issue date Sep 22, 2009
- Fujitsu Limited
- Yoshiyuki Karakawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Intra-station control system for connectionless communications system
- Patent number 7,551,612
- Issue date Jun 23, 2009
- Fujitsu Limited
- Yasusi Kobayashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Data communication system and communication device used
- Patent number 6,912,210
- Issue date Jun 28, 2005
- Fujitsu Limited
- Makoto Uchiba
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Connectionless communications system, its test method, and intra-st...
- Patent number 6,333,932
- Issue date Dec 25, 2001
- Fujitsu Limited
- Yasusi Kobayasi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Automatic protection switching system for ATM exchange network
- Patent number 5,870,382
- Issue date Feb 9, 1999
- Fujitsu Limited
- Shunichi Tounai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Station Device, Message Transfer Method, and Program Storage Medium...
- Publication number 20080170577
- Publication date Jul 17, 2008
- Fujitsu Limited
- Takeshi Sumou
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
RPR ring network system
- Publication number 20060222007
- Publication date Oct 5, 2006
- FUJITSU LIMITED
- Yoshiyuki Karakawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Signal distribution method and a signal distribution apparatus
- Publication number 20050117608
- Publication date Jun 2, 2005
- Yoshiyuki Karakawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
CONNECTIONLESS COMMUNICATIONS SYSTEM, ITS TEST METHOD, AND INTRA-ST...
- Publication number 20030179712
- Publication date Sep 25, 2003
- YASUSI KOBAYASHI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE