Shigehiko Hirata

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Asakura, JP

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Patents Grantslast 30 patents

Information Patent Grant
Call control device, call control method, and call control system
- Patent number 9,705,903
- Issue date Jul 11, 2017
- Fujitsu Limited
- Ryouji Nakamatsu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication system, communication method, and call control server
- Patent number 9,621,599
- Issue date Apr 11, 2017
- Fujitsu Limited
- Ryouji Nakamatsu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Mobile radio communication system
- Patent number 7,392,062
- Issue date Jun 24, 2008
- Fujitsu Limited
- Koji Kuriki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
CALL CONTROL DEVICE, CALL CONTROL METHOD, AND CALL CONTROL SYSTEM
- Publication number 20160248789
- Publication date Aug 25, 2016
- Fujitsu Limited
- Ryouji NAKAMATSU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
COMMUNICATION SYSTEM, COMMUNICATION METHOD, AND CALL CONTROL SERVER
- Publication number 20150180909
- Publication date Jun 25, 2015
- Fujitsu Limited
- Ryouji NAKAMATSU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Wireless network control method and device, and mobile communicatio...
- Publication number 20070111734
- Publication date May 17, 2007
- FUJITSU LIMITED
- Yoshihiro Beppu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Mobile radio communication system
- Publication number 20060073849
- Publication date Apr 6, 2006
- Koji Kuriki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE