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Hai Yu

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  • Zhuhai, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Extension gate for trolley
    • Patent number 11,780,485
    • Issue date Oct 10, 2023
    • Zhuhai Shichang Metals Ltd.
    • Hai Yu
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Extension gate for trolley
    • Patent number 11,161,536
    • Issue date Nov 2, 2021
    • Zhuhai Shichang Metals Ltd.
    • Hai Yu
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Foldable trolley with extendable gate
    • Patent number D911654
    • Issue date Feb 23, 2021
    • Zhuhai Shichang Metals Ltd.
    • Hai Yu
    • D34 - Material or article handling equipment
  • Information Patent Grant

    Extendable gate for a trolley
    • Patent number D911657
    • Issue date Feb 23, 2021
    • Zhuhai Shichang Metals Ltd.
    • Hai Yu
    • D34 - Material or article handling equipment
  • Information Patent Grant

    Foldable trolley
    • Patent number D855921
    • Issue date Aug 6, 2019
    • Zhuhai Shichang Metals Ltd.
    • Hai Yu
    • D34 - Material or article handling equipment
  • Information Patent Grant

    Foldable trolley
    • Patent number D842575
    • Issue date Mar 5, 2019
    • Zhuhai Shichang Metals Ltd.
    • Hai Yu
    • D34 - Material or article handling equipment
  • Information Patent Grant

    Multifunctional foldable trolley
    • Patent number 10,150,492
    • Issue date Dec 11, 2018
    • Zhuhai Shichang Metals Ltd.
    • Hai Yu
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Multifunctional foldable trolley
    • Patent number 9,908,548
    • Issue date Mar 6, 2018
    • Zhuhai Shichang Metals, Ltd.
    • Hai Yu
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS

Patents Applicationslast 30 patents

  • Information Patent Application

    EXTENSION GATE FOR TROLLEY
    • Publication number 20220017133
    • Publication date Jan 20, 2022
    • Zhuhai Shichang Metals Ltd.
    • Hai Yu
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Application

    EXTENSION GATE FOR TROLLEY
    • Publication number 20200346677
    • Publication date Nov 5, 2020
    • Zhuhai Shichang Metals Ltd.
    • Hai Yu
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Application

    Multifunctional Foldable Trolley
    • Publication number 20180154916
    • Publication date Jun 7, 2018
    • Zhuhai Shichang Metals Ltd.
    • Hai Yu
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS