Patents by Inventor Liuzhu CHEN

Liuzhu CHEN has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Lifting device and operating method thereof
    Patent number: 11180325
    Abstract: This disclosure provides a lifting device, comprising: guide rails extending through a plurality of floors in vertical direction, a lift car frame that is liftably connected to the guide rails, a tray that is detachably connected to the lift car frame, a tray circulation assembly that is mounted on each floor, the tray being detachably connectable to the tray circulation assembly and the tray circulation assembly being used for docking the tray connected thereto on the floor where the tray circulation assembly is mounted or for enabling the tray connected thereto to be connected to the lift car frame. This disclosure further provides a method of operating the lifting device.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: November 23, 2021
    Assignees: HEFEI BOE Display Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Can Wang, Tianzhu Chen, Yu Liu, Liuzhu Chen
  • LIFTING DEVICE AND OPERATING METHOD THEREOF
    Publication number: 20200231412
    Abstract: This disclosure provides a lifting device, comprising: guide rails extending through a plurality of floors in vertical direction, a lift car frame that is liftably connected to the guide rails, a tray that is detachably connected to the lift car frame, a tray circulation assembly that is mounted on each floor, the tray being detachably connectable to the tray circulation assembly and the tray circulation assembly being used for docking the tray connected thereto on the floor where the tray circulation assembly is mounted or for enabling the tray connected thereto to be connected to the lift car frame. This disclosure further provides a method of operating the lifting device.
    Type: Application
    Filed: July 24, 2018
    Publication date: July 23, 2020
    Inventors: Can WANG, Tianzhu CHEN, Yu LIU, Liuzhu CHEN
  • Pet playpen
    Patent number: D994230
    Type: Grant
    Filed: November 3, 2021
    Date of Patent: August 1, 2023
    Inventors: Yongquan Yu, Liuzhu Chen, Jun Qian
  • Pet playpen
    Patent number: D994992
    Type: Grant
    Filed: November 3, 2021
    Date of Patent: August 8, 2023
    Inventors: Yongquan Yu, Liuzhu Chen, Jun Qian
  • Pet cage
    Patent number: D1035166
    Type: Grant
    Filed: June 7, 2022
    Date of Patent: July 9, 2024
    Inventors: Yongquan Yu, Liuzhu Chen, Jun Qian