TREA

Atsushi Tachikawa

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  • Yokohama, 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

    Packet transfer apparatus performing address translation
    • Patent number 7,609,717
    • Issue date Oct 27, 2009
    • Hitachi, Ltd.
    • Hiroaki Miyata
    • 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

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

    Packet transfer apparatus performing address translation
    • Publication number 20030219023
    • Publication date Nov 27, 2003
    • Hiroaki Miyata
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE