Patents by Inventor Kai-Leung Cheng

Kai-Leung 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).

  • POLYCARBONATE COMPOSITION WHICH EXHIBITS A FLECKED APPEARANCE WHEN MOLDED
    Publication number: 20230174779
    Abstract: Disclosed are compositions comprising a) one or more polycarbonates; b) one or more first colorants; c) one or more flame retardants; and d) one or more particles having a melting point above the temperature at which polycarbonates are processed wherein the particles are coated with an organic polymer having a melting point above the processing temperature of the one or more polycarbonates; wherein the composition when molded exhibits a flecked appearance. The particles have a second colorant bound to the surface of the particles by the organic polymer. The organic polymer may be crosslinked. The one or more polycarbonates may comprise post-consumer recycled polycarbonates. Disclosed are molded products prepared from the disclosed compositions. The molded products exhibit good properties as disclosed herein. The molded products have a flecked appearance.
    Type: Application
    Filed: January 30, 2023
    Publication date: June 8, 2023
    Inventors: Claude T. Van Nuffel, Yao-Chu Chung, Kai-Leung Cheng, Hung Chang Wu, Jih-Chiang Hsieh
  • POLYCARBONATE COMPOSITION WHICH EXHIBITS A FLECKED APPEARANCE WHEN MOLDED
    Publication number: 20200354569
    Abstract: Disclosed are compositions comprising a) one or more polycarbonates; b) one or more first colorants; c) one or more flame retardants; and d) one or more particles having a melting point above the temperature at which polycarbonates are processed wherein the particles are coated with an organic polymer having a melting point above the processing temperature of the one or more polycarbonates; wherein the composition when molded exhibits a flecked appearance. The particles have a second colorant bound to the surface of the particles by the organic polymer. The organic polymer may be crosslinked. The one or more polycarbonates may comprise post-consumer recycled polycarbonates. Disclosed are molded products prepared from the disclosed compositions. The molded products exhibit good properties as disclosed herein. The molded products have a flecked appearance.
    Type: Application
    Filed: April 22, 2020
    Publication date: November 12, 2020
    Inventors: Claude T. Van Nuffel, Yao-Chu Chung, Kai-Leung Cheng, Hung Chang Wu, Jih-Chiang Hsieh