Seiji Tokunaga

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Fukuoka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of controlling change-over of connection route between media...
- Patent number 7,209,472
- Issue date Apr 24, 2007
- Fujitsu Limited
- Masami Ohta
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
IP gateway apparatus
- Patent number 6,961,331
- Issue date Nov 1, 2005
- Fujitsu Limited
- Seiji Tokunaga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and system of seizing communication channel enhancing usabil...
- Patent number 6,674,763
- Issue date Jan 6, 2004
- Fujitsu Limited
- Seiji Tokunaga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Network call control system
- Patent number 6,665,394
- Issue date Dec 16, 2003
- Fujitsu Limited
- Norihito Nishimoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Method of controlling change-over of connection route between media...
- Publication number 20020172209
- Publication date Nov 21, 2002
- Masami Ohta
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
IP gateway apparatus
- Publication number 20020027923
- Publication date Mar 7, 2002
- Seiji Tokunaga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE