Patents by Inventor Henri Beerda

Henri Beerda 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).

  • Sizing composition and glass fiber reinforced thermoplastic resin
    Patent number: 7419721
    Abstract: The present invention is directed to sizing compositions for glass fibers and glass fiber reinforced thermoplastic resins. The sizing composition comprises a maleic anhydride copolymer. Thermoplastic polyamide resin articles reinforced with glass fibers at least partially coated with a residue of the sizing composition can demonstrate a surprising improvement in strength of the reinforced polyamide resin when lubricated with a fatty acid metal salt and in the hydrolysis resistance when exposed to boiling water/ethylene glycol medium.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: September 2, 2008
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Henri Beerda, Ronald Boelman, Jacob Cornelis Dijt, Bertho van de Heisteeg, Johannes Leonardus Tabak
  • Sizing composition and glass fiber reinforced thermoplastic resin
    Publication number: 20050136237
    Abstract: The present invention is directed to sizing compositions for glass fibers and glass fiber reinforced thermoplastic resins. The sizing composition comprises a maleic anhydride copolymer. Thermoplastic polyamide resin articles reinforced with glass fibers at least partially coated with a residue of the sizing composition can demonstrate a surprising improvement in strength of the reinforced polyamide resin when lubricated with a fatty acid metal salt and in the hydrolysis resistance when exposed to boiling water/ethylene glycol medium.
    Type: Application
    Filed: December 19, 2003
    Publication date: June 23, 2005
    Inventors: Henri Beerda, Ronald Boelman, Jacob Dijt, Bertho Heisteeg, Johannes Tabak