TREA

Yasuhiro Ishizaka

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Patents Grantslast 30 patents

  • Information Patent Grant

    Switching power supply circuit capable of timing adjustment of signal
    • Patent number 7,923,860
    • Issue date Apr 12, 2011
    • Ricoh Company, Ltd.
    • Katsuhisa Furuse
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Switching power supply circuit
    • Patent number 7,884,584
    • Issue date Feb 8, 2011
    • Ricoh Company, Ltd.
    • Katsuhisa Furuse
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    At-command analyzing device
    • Patent number 7,548,581
    • Issue date Jun 16, 2009
    • Ricoh Company, Ltd.
    • Tadanori Ryu
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    At-command analyzing method
    • Patent number 7,321,615
    • Issue date Jan 22, 2008
    • Ricoh Company, Ltd.
    • Tadanori Ryu
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    AT-command analyzing device
    • Patent number 6,704,350
    • Issue date Mar 9, 2004
    • Ricoh Company, Ltd.
    • Tadanori Ryu
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents