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Chunhua Yang

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  • Dongguan, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Dual-shaft built-in pump
    • Patent number 11,767,855
    • Issue date Sep 26, 2023
    • DONGGUAN HONGSHENG METAL & PLASTIC TECHNOLOGY CO., LTD.
    • Chunhua Yang
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Air pump with two fans
    • Patent number 10,716,408
    • Issue date Jul 21, 2020
    • DONGGUAN HONGSHENG METAL & PLASTIC TECHNOLOGY CO., LTD.
    • Chunhua Yang
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...

Patents Applicationslast 30 patents

  • Information Patent Application

    DUAL-SHAFT BUILT-IN PUMP
    • Publication number 20230175518
    • Publication date Jun 8, 2023
    • DONGGUAN HONGSHENG METAL&PLASTIC TECHNOLOGY CO., LTD.
    • Chunhua Yang
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    ELECTRIC AIR PUMP FOR INFLATABLE PRODUCT
    • Publication number 20210095678
    • Publication date Apr 1, 2021
    • DONGGUAN HONGSHENG METAL & PLASTIC TECHNOLOGY CO., LTD.
    • Chunhua Yang
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    AIR PUMP
    • Publication number 20200063745
    • Publication date Feb 27, 2020
    • DONGGUAN HONGSHENG METAL&PLASTIC TECHNOLOGY CO., LTD.
    • Chunhua Yang
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...