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Dongsheng Li

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Patents Grantslast 30 patents

  • Information Patent Grant

    Power conversion device and air conditioner
    • Patent number 10,680,544
    • Issue date Jun 9, 2020
    • HITACHI-JOHNSON CONTROLS AIR CONDITIONING, INC.
    • Ken Kishita
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Inverter and motor drive device, freezing device
    • Patent number 10,651,774
    • Issue date May 12, 2020
    • HITACHI-JOHNSON CONTROLS AIR CONDITIONING, INC.
    • Dongsheng Li
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Motor drive device and refrigeration equipment
    • Patent number 10,594,239
    • Issue date Mar 17, 2020
    • HITACHI-JOHNSON CONTROLS AIR CONDITIONING, INC.
    • Dongsheng Li
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Grant

    Inverter control apparatus and air conditioner
    • Patent number 9,893,670
    • Issue date Feb 13, 2018
    • HITACHI-JOHNSON CONTROLS AIR CONDITIONING, INC.
    • Rei Kasahara
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Grant

    Converter, motor driving module, and refrigerating apparatus
    • Patent number 8,847,534
    • Issue date Sep 30, 2014
    • Hitachi Appliances, Inc.
    • Dongsheng Li
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Speed controller of magnetic motor
    • Patent number 8,344,671
    • Issue date Jan 1, 2013
    • Hitachi Industrial Equipment Systems Co., Ltd.
    • Kazuaki Tobari
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents