Patents by Inventor Pichapob Karoonngampan

Pichapob Karoonngampan 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).

  • Polymer compositions or blends including natural rubber-based acrylonitrile butadiene styrene
    Patent number: 9631073
    Abstract: In an embodiment, a natural rubber-based ABS—target polymer blend includes natural rubber-based ABS powder combined with a set of target polymers (e.g., polycarbonate (PC)). A natural rubber-based ABS powder production process includes producing grafted natural rubber; and mixing the grafted natural rubber with a set of grafted polybutadiene rubbers. The set of grafted polybutadiene rubbers includes at least one grafted polybutadiene rubber having a particle size that is significantly different than the grafted natural rubber particle size. In an embodiment, the grafted natural rubber exhibits a large particle size; a first grafted polybutadiene rubber exhibits a small particle size; and a second grafted polybutadiene rubber exhibits a medium particle size between the large and small particle sizes.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: April 25, 2017
    Assignee: IRPC PUBLIC COMPANY LIMITED
    Inventors: Suthep Kwampian, Ronnapa Phonthong, Worawan Laptaptimthong, Pichapob Karoonngampan