Patents by Inventor Wilhelmus Steendam

Wilhelmus Steendam 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).

  • THERMOPLASTIC POLYCARBONATE COMPOSITIONS WITH IMPROVED MECHANICAL PROPERTIES, ARTICLES MADE THEREFROM AND METHOD OF MANUFACTURE
    Publication number: 20070232744
    Abstract: A thermoplastic composition comprises a polycarbonate resin and a mineral filler masterbatch, wherein the filler masterbatch comprises a blend of a mineral filler and an aromatic vinyl copolymer and wherein the mineral filler comprises at least 20 wt. % of the masterbatch. The thermoplastic composition of the invention has improved mechanical properties. An article may be formed by molding, extruding, shaping or forming such a composition to form the article.
    Type: Application
    Filed: March 30, 2006
    Publication date: October 4, 2007
    Applicant: General Electric Company
    Inventors: Andries Volkers, Naveen Agarwal, Robert Venderbosch, Wilhelmus Steendam
  • Thermoplastic polycarbonate compositions with improved mechanical properties, articles made therefrom and method of manufacture
    Publication number: 20060287422
    Abstract: A thermoplastic composition comprising a polycarbonate resin, a mineral filler and an acid or an acid salt, and optionally an aromatic vinyl copolymer and/ or an impact modifier, has been found to exhibit improved characteristics and less degradation than filled thermoplastic compositions without the acid or acid salt. In some embodiments the composition exhibits improved impact and ductility, as well as molecular weight retention. An article may be formed by molding, extruding, shaping or forming such a composition to form the article.
    Type: Application
    Filed: June 16, 2005
    Publication date: December 21, 2006
    Applicant: General Electric Company
    Inventors: Andries Volkers, Robert Venderbosch, Wilhelmus Steendam, Bernardus Schrauwen