Hiroaki Nakazawa

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Chigasaki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Router and SIP server
- Patent number 7,830,886
- Issue date Nov 9, 2010
- Hitachi, Ltd.
- Hiroaki Nakazawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Access server with function of collecting communication statistics...
- Patent number 7,457,875
- Issue date Nov 25, 2008
- Hitachi Communication Technologies, Ltd.
- Mitsuhiro Wada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Address translator and method for management of address translation...
- Patent number 7,404,008
- Issue date Jul 22, 2008
- Hitachi, Ltd.
- Keisuke Takeuchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Router and sip server
- Patent number 7,330,470
- Issue date Feb 12, 2008
- Hitachi Communication Technologies, Ltd.
- Hiroaki Nakazawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Mobile communication system
- Patent number 7,123,599
- Issue date Oct 17, 2006
- Hitachi, Ltd.
- Masashi Yano
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Router and sip server
- Publication number 20080095158
- Publication date Apr 24, 2008
- Hiroaki Nakazawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Router and sip server
- Publication number 20050213591
- Publication date Sep 29, 2005
- Hiroaki Nakazawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Access server with function of collecting communication statistics...
- Publication number 20050198277
- Publication date Sep 8, 2005
- Mitsuhiro Wada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Address translator and method for management of address translation...
- Publication number 20040103212
- Publication date May 27, 2004
- Keisuke Takeuchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Mobile communication system
- Publication number 20030012179
- Publication date Jan 16, 2003
- Masashi Yano
- H04 - ELECTRIC COMMUNICATION TECHNIQUE