Patents by Inventor Changyou Yan

Changyou Yan 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).

  • Direct-writing polyimide additive manufacturing material and preparation method thereof
    Patent number: 11020895
    Abstract: A method for preparing a direct-writing polyimide additive manufacturing (AM) material includes (1) conducting ultraviolet curing immediately after the photosensitive polyimide ink is subjected to direct-writing extrusion, to obtain a polyimide precursor formed member; and (2) heat-treating the polyimide precursor formed member obtained in step (1) to obtain the direct-writing polyimide AM material. The direct-writing polyimide AM material obtained by using the method of the present invention has excellent comprehensive properties.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: June 1, 2021
    Assignee: Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences
    Inventors: Xiaolong Wang, Yuxiong Guo, Changyou Yan, Zhilu Liu, Feng Zhou
  • DIRECT-WRITING POLYIMIDE ADDITIVE MANUFACTURING MATERIAL AND PREPARATION METHOD THEREOF
    Publication number: 20200009784
    Abstract: A method for preparing a direct-writing polyimide additive manufacturing (AM) material includes (1) conducting ultraviolet curing immediately after the photosensitive polyimide ink is subjected to direct-writing extrusion, to obtain a polyimide precursor formed member; and (2) heat-treating the polyimide precursor formed member obtained in step (1) to obtain the direct-writing polyimide AM material. The direct-writing polyimide AM material obtained by using the method of the present invention has excellent comprehensive properties.
    Type: Application
    Filed: January 23, 2019
    Publication date: January 9, 2020
    Inventors: Xiaolong Wang, Yuxiong Guo, Changyou Yan, Zhilu Liu, Feng Zhou