Patents by Inventor Kai-Leung Larry Cheng

Kai-Leung Larry Cheng 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).

  • Molded structures of polycarbonate based substrates over molded with silicone rubbers
    Patent number: 11208574
    Abstract: Articles comprising: a molded substrate comprising one or more polycarbonate resins or blends of polycarbonate and polyester resins containing polydimethyl siloxanes modified with one or more of acrylate, hydroxyl or epoxy groups and disposed on the surface or a portion of the surface of the substrate is a cured silicone rubber; wherein the one or more polycarbonate resins or blends of polycarbonate and polyester resins contain the modified polydimethyl siloxanes in sufficient amount such that the peel strength is increased. Compositions comprising one or more polycarbonate resins or blends of polycarbonate and polyester resins containing polydimethyl siloxanes modified with one or more of acrylate, hydroxyl or epoxy groups in an amount of about 0.1 to less than 1.0 percent by weight. Methods for preparing the articles are disclosed.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: December 28, 2021
    Assignee: TRINSEO EUROPE GMBH
    Inventors: Kai-Leung Larry Cheng, Chang Wu Hung, Claude T. Van Nuffel, Chia-Wei Wade Chang
  • Molded Structures of Polycarbonate Based Substrates Over Molded with Silicone Rubbers
    Publication number: 20190031916
    Abstract: Articles comprising: a molded substrate comprising one or more polycarbonate resins or blends of polycarbonate and polyester resins containing polydimethyl siloxanes modified with one or more of acrylate, hydroxyl or epoxy groups and disposed on the surface or a portion of the surface of the substrate is a cured silicone rubber; wherein the one or more polycarbonate resins or blends of polycarbonate and polyester resins contain the modified polydimethyl siloxanes in sufficient amount such that the peel strength is increased. Compositions comprising one or more polycarbonate resins or blends of polycarbonate and polyester resins containing polydimethyl siloxanes modified with one or more of acrylate, hydroxyl or epoxy groups in an amount of about 0.1 to less than 1.0 percent by weight. Methods for preparing the articles are disclosed.
    Type: Application
    Filed: February 24, 2017
    Publication date: January 31, 2019
    Inventors: Kai-Leung Larry Cheng, Chang Wu Hung, Claude T. Van Nuffel, Chia-Wei Wade Chang