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Koji HIRAI

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Patents Grantslast 30 patents

  • Information Patent Grant

    D/A converter including higher-order resistor string
    • Patent number 8,963,757
    • Issue date Feb 24, 2015
    • Renesas Electronics Corporation
    • Koji Hirai
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Digital-to-analog converter
    • Patent number 8,866,658
    • Issue date Oct 21, 2014
    • Renesas Electronics Corporation
    • Koji Hirai
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    D/A converter
    • Patent number 8,681,031
    • Issue date Mar 25, 2014
    • Renesas Electronics Corporation
    • Koji Hirai
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Resistor string digital-to-analog converter
    • Patent number 8,228,223
    • Issue date Jul 24, 2012
    • Renesas Electronics Corporation
    • Koji Hirai
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    D/A converter including higher-order resistor string
    • Patent number 8,144,044
    • Issue date Mar 27, 2012
    • Renesas Electronics Corporation
    • Koji Hirai
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS

Patents Applicationslast 30 patents

  • Information Patent Application

    D/A CONVERTER INCLUDING HIGHER-ORDER RESISTOR STRING
    • Publication number 20120326907
    • Publication date Dec 27, 2012
    • RENESAS ELECTRONIC CORPORATION
    • Koji HIRAI
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Application

    DIGITAL-TO-ANALOG CONVERTER
    • Publication number 20120256776
    • Publication date Oct 11, 2012
    • Renesas Electronics Corporation
    • Koji HIRAI
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Application

    D/A CONVERTER
    • Publication number 20120139769
    • Publication date Jun 7, 2012
    • RENESAS ELECTRONICS CORPORATION
    • Koji HIRAI
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Application

    DIGITAL-TO-ANALOG CONVERTER
    • Publication number 20110140944
    • Publication date Jun 16, 2011
    • RENESAS ELECTRONICS CORPORATION
    • Koji HIRAI
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Application

    D/A converter
    • Publication number 20110006939
    • Publication date Jan 13, 2011
    • NEC Electronics Corporation
    • Koji Hirai
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Application

    RADIATION NOISE MINIMIZING SHIELDING CASING
    • Publication number 20070249229
    • Publication date Oct 25, 2007
    • Koji Hirai
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    Shielding casing
    • Publication number 20060258217
    • Publication date Nov 16, 2006
    • Koji Hirai
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    Cable connection structure and electronic apparatus having the same
    • Publication number 20020179313
    • Publication date Dec 5, 2002
    • Koji Hirai
    • H01 - BASIC ELECTRIC ELEMENTS