Patents by Inventor Douglas Warren Howie, Jr.

Douglas Warren Howie, Jr. 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).

  • Low gloss thermoplastic compositions, method of manufacture thereof and articles comprising the same
    Patent number: 9505930
    Abstract: Disclosed herein is a composition comprising a polycarbonate; a copolymer derived from a copolymerization of a vinyl aromatic monomer and an ethylenically unsaturated nitrile monomer; an impact modifier that comprises acrylonitrile-styrene-acrylate; a first gel-type low gloss additive; where the first gel-type low gloss additive is an epoxy cross-linked styrene acrylonitrile dispersed in polycarbonate; a second gel-type low gloss additive; where the second gel-type low gloss additive is an epoxy cross-linked styrene acrylonitrile dispersed in polystyrene; a first polymethylmethacrylate; and a second polymethylmethacrylate; where the first polymethylmethacrylate and the second polymethylmethacrylate are present in a total amount of 1 to 25 wt %, based on the total weight of the composition; and wherein the first polymethylmethacrylate has a higher weight average molecular weight than the second polymethylmethacrylate.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: November 29, 2016
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Bin Sun, Stephen L. Taylor, Douglas Warren Howie, Jr.