Patents by Inventor Wanjin Zhang

Wanjin Zhang 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).

  • Controlled crosslinked polyaryletherketone material with improved properties and a process by producing the same
    Patent number: 7265196
    Abstract: The present invention relates to a controllable crosslinking polyaryletherketone with improved properties such as stiffness, heat resistance, and stability as shown by any one of the following structures:
    Type: Grant
    Filed: July 7, 2004
    Date of Patent: September 4, 2007
    Assignee: Jilin University
    Inventors: Wanjin Zhang, Chunhai Chen, Xincai Liu, Xiaogang Zhao, Youhai Yu, Zihong Gao, Xiaoqing Yang, Zhongwen Wu
  • Novel controlled crosslinked polyaryletherketone material with improved properties and a process for producing the same
    Publication number: 20050010015
    Abstract: The present invention relates to a controllable crosslinking polyaryletherketone with improved properties such as stiffness, heat resistance, and stability as shown by any one of the following structures:
    Type: Application
    Filed: July 7, 2004
    Publication date: January 13, 2005
    Inventors: Wanjin Zhang, Chunhai Chen, Xincai Liu, Xiaogang Zhao, Youhai Yu, Zihong Gao, Xiaoqing Yang, Zhongwen Wu
  • Oligomeric anilines and their synthesis
    Patent number: 6160177
    Abstract: Oligomeric anilines (I; n=2, 4), useful in sensors for volatile organic compounds, in corrosion-resistant coatings for metals and metal alloys, and in applications which use electroactive materials, are prepared. Thus, tetraaniline in the emeraldine oxidation. state (n=1) was prepared by the ferric chloride-promoted oxidative coupling of N-phenyl-1,4-phenylenediamine HCl salt and recrystallizing the reaction mixture from PhMe, and next converted to tetraaniline in the leucoemeraldine oxidation state by treatment with hydrazine. Tetraaniline in the leucoemeraldine oxidation state was then contacted with an oxidative coupling agent (e.g., ammonium peroxydisulfate) to produce aniline oligomers I (n=2 and 4).
    Type: Grant
    Filed: December 6, 1999
    Date of Patent: December 12, 2000
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: Alan G. MacDiarmid, Jing Feng, Wanjin Zhang