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Koji Hamaoka

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  • Osaka, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Electric compressor
    • Patent number 8,226,372
    • Issue date Jul 24, 2012
    • Panasonic Corporation
    • Koji Hamaoka
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Driving method and driver of brushless DC motor
    • Patent number 7,427,841
    • Issue date Sep 23, 2008
    • Matsushita Electric Industrial Co., Ltd.
    • Koji Hamaoka
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Motor drive inverter control apparatus
    • Patent number 7,233,124
    • Issue date Jun 19, 2007
    • Matsushita Electric Industrial Co., Ltd.
    • Yoshinori Takeoka
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Brushless DC motor driving method and apparatus for it
    • Patent number 7,102,306
    • Issue date Sep 5, 2006
    • Matsushita Electric Industrial Co., Ltd.
    • Koji Hamaoka
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Power controller and compressor for refrigeration system
    • Patent number 6,704,202
    • Issue date Mar 9, 2004
    • Matsushita Refrigeration Company
    • Koji Hamaoka
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Grant

    Electric power unit with early auxiliary capacitor charging
    • Patent number 6,239,992
    • Issue date May 29, 2001
    • Matsushita Refrigeration Company
    • Koji Hamaoka
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Linear motor and linear compressor
    • Patent number 6,184,597
    • Issue date Feb 6, 2001
    • Matsushita Refrigeration Company
    • Hideo Yamamoto
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Power unit
    • Patent number 6,157,554
    • Issue date Dec 5, 2000
    • Matsushita Refrigeration Company
    • Koji Hamaoka
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

  • Information Patent Application

    Driving method and driver of brushless dc motor
    • Publication number 20070145919
    • Publication date Jun 28, 2007
    • Koji Hamaoka
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Motor frive inverter control apparatus
    • Publication number 20060208687
    • Publication date Sep 21, 2006
    • Matsushita Electric Industrial Co., Ltd.
    • Yoshinori Takeoka
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    BRUSHLESS DC MOTOR DRIVING METHOD AND APPARATUS FOR IT
    • Publication number 20060082339
    • Publication date Apr 20, 2006
    • Koji Hamaoka
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Electrically powered compressor
    • Publication number 20060039807
    • Publication date Feb 23, 2006
    • Koji Hamaoka
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...