Patents by Inventor Zemeng Sun

Zemeng Sun 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).

  • Polyester resin composition and method of producing same
    Patent number: 11066515
    Abstract: A polyester resin composition is excellent in heat resistance and hydrolysis resistance and results in a small amount of a gel composition and linear oligomers generated during a melt-molding step and a processing step. The polyester resin composition satisfies formulas (I) to (IV): the amount of generated linear oligomers<900 ppm??(I) ?COOH/COOH?2.0??(II) 5 ppm?Mn content?40 ppm??(III) 4 ppm?Na content?40 ppm??(IV).
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: July 20, 2021
    Assignee: Toray Industries, Inc.
    Inventors: Mayumi Matsumoto, Zemeng Sun, Jun Sakamoto
  • POLYESTER RESIN COMPOSITION AND METHOD OF PRODUCING SAME
    Publication number: 20210087331
    Abstract: A polyester resin composition is excellent in heat resistance and hydrolysis resistance and results in a small amount of a gel composition and linear oligomers generated during a melt-molding step and a processing step. The polyester resin composition satisfies formulas (I) to (IV): the amount of generated linear oligomers<900 ppm??(I) ?COOH/COOH?2.0??(II) 5 ppm?Mn content?40 ppm??(III) 4 ppm?Na content?40 ppm??(IV).
    Type: Application
    Filed: July 6, 2018
    Publication date: March 25, 2021
    Inventors: Mayumi Matsumoto, Zemeng Sun, Jun Sakamoto