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Sun Duhua

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  • Shanghai, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Magnetic shaft for brushless D.C. motor
    • Patent number 6,787,956
    • Issue date Sep 7, 2004
    • Shanghai Yen Sun Electrical Industry Co., Ltd.
    • Duhua Sun
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Heat-dissipating fan
    • Patent number 6,744,172
    • Issue date Jun 1, 2004
    • Yen Sun Technology Corp.
    • Sun Duhua
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

  • Information Patent Application

    HEAT-DISSIPATING FAN
    • Publication number 20040051418
    • Publication date Mar 18, 2004
    • Sun Duhua
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Magnetic shaft for brushless D.C. motor
    • Publication number 20030025410
    • Publication date Feb 6, 2003
    • Duhua Sun
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER