Patents by Inventor Yongjie Fang

Yongjie Fang 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).

  • Controllable downhole drilling and completion tool separating device and their method of use
    Patent number: 11988055
    Abstract: A controllable downhole drilling and completion tool separating device and their method of use are provided. The device includes an upper mandrel connector, an outer sleeve, a claw clamp sleeve, a claw clamp locking ring, a mandrel sleeve, a lower connector, a piston ring and a pressure bearing ball. The upper end of the lower connector is on the outer side of the upper connector in a sleeving mode. A first annular cavity is between the lower connector and the upper connector. The piston ring is on the outer side of the upper connector in a sleeving mode and located in the first annular cavity. The claw clamp sleeve and the outer sleeve are sequentially arranged on the outer side of the upper connector in a sleeving mode. A second annular cavity is communicated with the first annular cavity and formed between the claw clamp sleeve and the upper connector.
    Type: Grant
    Filed: January 3, 2023
    Date of Patent: May 21, 2024
    Assignee: SOUTHWEST PETROLEUM UNIVERSITY
    Inventors: Gao Li, Pan Fang, Dong Xiao, Hongtao Li, Xu Yang, Yongjie Li, Yangyang Xu, Guo Liu
  • Intelligent toilet seat cover
    Patent number: D1008433
    Type: Grant
    Filed: June 14, 2023
    Date of Patent: December 19, 2023
    Inventor: Yongjie Fang
  • Intelligent toilet seat cover
    Patent number: D1008434
    Type: Grant
    Filed: June 14, 2023
    Date of Patent: December 19, 2023
    Inventor: Yongjie Fang
  • Intelligent toilet seat cover
    Patent number: D1010781
    Type: Grant
    Filed: June 14, 2023
    Date of Patent: January 9, 2024
    Inventor: Yongjie Fang