Patents by Inventor Yi-Xian Wu

Yi-Xian Wu 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).

  • Publication number: 20230142207
    Abstract: An apparatus for transferring an electronic component from a flexible carrier substrate to a flexible target substrate is provided. The apparatus includes a first frame, a second frame, an abutment element and a deformation generating mechanism. The first frame is used to carry the flexible carrier substrate. The second frame is used to carry the flexible target substrate. The abutment element is arranged adjacent to the first frame, and is controlled by a braking mechanism, and move repeatedly toward and away from the second frame. The deformation generating mechanism is adjacent to the second frame and arranged opposite to the abutment element. When the abutment element moves toward the second frame, the deformation generating mechanism forms a relative force toward the abutment element at a position where the surface of the flexible target substrate carried by the second frame is relative to the abutment element.
    Type: Application
    Filed: August 10, 2022
    Publication date: May 11, 2023
    Applicant: Stroke Precision Advanced Engineering Co., Ltd.
    Inventors: Chingju Lin, Yi Xian Wu
  • Patent number: 7776976
    Abstract: This invention puts forward a process of preparing butyl rubber. High gravity devices are used as polymerization reactor. The mixture of isomonoolefin and conjugated diolefin monomers and the diluent, and the mixture of the initiator and diluent are pumped at a certain ratio into a high-gravity reactor to conduct cationic polymerization in the high-gravity environment. After polymerization, the monomers and the diluent are removed from the product to obtain butyl rubber polymers with number-average molecular weight of 80000˜300000 and molecular weight distribution index of 1.9˜3.6. The high gravity polymerization method of this invention can tremendously intensify micro-mixing, mass transfer and heat transfer in the reaction. Compared to the conventional stirred polymerization method, this invention features small reactor volume, at least 30-fold shorter residence time of substances in the high gravity reactor, low cost, low energy consumption and high production efficiency.
    Type: Grant
    Filed: July 20, 2007
    Date of Patent: August 17, 2010
    Assignee: Beijing University of Chemical Technology
    Inventors: Jian-Feng Chen, Hua Gao, Yi-Xian Wu, Hai-Kui Zou, Guang-Wen Chu, Lei Zhang
  • Publication number: 20090286948
    Abstract: This invention puts forward a process of preparing butyl rubber. High gravity devices are used as polymerization reactor. The mixture of isomonoolefin and conjugated diolefin monomers and the diluent, and the mixture of the initiator and diluent are pumped at a certain ratio into a high-gravity reactor to conduct cationic polymerization in the high-gravity environment. After polymerization, the monomers and the diluent are removed from the product to obtain butyl rubber polymers with number-average molecular weight of 80000˜300000 and molecular weight distribution index of 1.9˜3.6. The high gravity polymerization method of this invention can tremendously intensify micro-mixing, mass transfer and heat transfer in the reaction. Compared to the conventional stirred polymerization method, this invention features small reactor volume, at least 30-fold shorter residence time of substances in the high gravity reactor, low cost, low energy consumption and high production efficiency.
    Type: Application
    Filed: July 20, 2007
    Publication date: November 19, 2009
    Inventors: Jian-Feng Chen, Hua Gao, Yi-Xian Wu, Hai-Kui Zou, Guang-Wen Chu, Lei Zhang