Patents by Inventor Yaoqing PAN

Yaoqing PAN 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).

  • Pre-sressed insulated tubing
    Patent number: 9027607
    Abstract: The present invention relates to a pre-stressed insulated tubing, including an inner tube (3) and an outer tube (2) nested outside of the inner tube (3), and a closed ring cavity is formed between the inner tube (3) and the outer tube (2), wherein an insulated casing (4) is arranged in the closed ring cavity. The pre-stressed insulated tubing of the present invention features high vacuum degree, high thermal insulation level and long working life, and the insulated casing is reusable for cost saving.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: May 12, 2015
    Assignee: General Machinery Plant of Liaohe Petroleum Exploration Bureau of CNPC
    Inventors: Yaoqing Pan, Yongning Wu, Jinli Zhu, Xiaohui Zhang, Wei Zhang, Zhenyu Xu, Zhenyu Jia, Ji Chen, Yi Wang
  • Pre-Sressed Insulated Tubing
    Publication number: 20120175007
    Abstract: The present invention relates to a pre-stressed insulated tubing, including an inner tube (3) and an outer tube (2) nested outside of the inner tube (3), and a closed ring cavity is formed between the inner tube (3) and the outer tube (2), wherein an insulated casing (4) is arranged in the closed ring cavity. The pre-stressed insulated tubing of the present invention features high vacuum degree, high thermal insulation level and long working life, and the insulated casing is reusable for cost saving.
    Type: Application
    Filed: January 6, 2012
    Publication date: July 12, 2012
    Applicant: General Machinery Plant of Liaohe Petroleum Exploration Bureau of CNPC
    Inventors: Yaoqing PAN, Yongning WU, Jinli ZHU, Xiaohui ZHANG, Wei ZHANG, Zhenyu XU, Zhenyu JIA, Ji CHEN, Yi WANG