Patents by Inventor Jinsong Zhang

Jinsong 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).

  • Publication number: 20040158029
    Abstract: High molecular weight random polyhydroxypolyamides (PHPAs) are produced by creating prepolymers which are further polymerized. Random prepolymers are formed from a stoichiometrically molar balance (1:1) starting material. The starting material is a 1:1 stoichiometrically balanced esterified aldaric acid:lkylene or alkylene derived diammonium salt. Alternatively, the starting material is an esterified stoichiometrically balanced diacid:diamine salt and a N′-ammoniumalkyl (or alkyl derived)-D-aldaramic acid terminal carboxylate zwitterionic salt mixture. The starting materials are polymerized in a basic alcohol using a second amine. The polymerized material, or the random prepolymers, are isolated and then further polymerized in a solvent, typically a mixed solvent of an alcohol and non-alcohol, to obtain the high molecular weight PHPAs.
    Type: Application
    Filed: December 10, 2003
    Publication date: August 12, 2004
    Inventors: Donald E. Kiely, Kylie Kramer, Jinsong Zhang
  • Patent number: D504885
    Type: Grant
    Filed: June 11, 2003
    Date of Patent: May 10, 2005
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Jinsong Zhang, Ning Yang
  • Patent number: D497925
    Type: Grant
    Filed: June 11, 2003
    Date of Patent: November 2, 2004
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Jinsong Zhang, Ning Yang