TREA

Mizuhiro Sakai

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  • Saitama, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Digital signing method
    • Patent number 7,770,009
    • Issue date Aug 3, 2010
    • Hitachi, Ltd.
    • Kunihiko Miyazaki
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Tax declaration system
    • Patent number 7,707,079
    • Issue date Apr 27, 2010
    • Hitachi, Ltd.
    • Mamoru Ozaki
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Digital signing method
    • Patent number 7,305,558
    • Issue date Dec 4, 2007
    • Hitachi, Ltd.
    • Kunihiko Miyazaki
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

  • Information Patent Application

    Digital signing method
    • Publication number 20080098232
    • Publication date Apr 24, 2008
    • Hitachi, Ltd
    • Kunihiko Miyazaki
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Financial data processing method and system
    • Publication number 20060041492
    • Publication date Feb 23, 2006
    • Norio Takahashi
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    Tax declaration system
    • Publication number 20050216379
    • Publication date Sep 29, 2005
    • Mamoru Ozaki
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    Electronic payment method and system
    • Publication number 20020049670
    • Publication date Apr 25, 2002
    • Hitachi, Ltd
    • Toshiyuki Moritsu
    • G06 - COMPUTING CALCULATING COUNTING