Patents by Inventor William Sigworth

William Sigworth 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).

  • Cellulosic-thermoplastic composite and method of making the same
    Publication number: 20070027234
    Abstract: Provided is a composition comprising fatty acid bis-amide, inorganic particulate such as pumice, cellulosic particulate, thermoplastic and maleic anhydride grafted polyolefin. The combination of an ethylene bis-amide and a minor amount of pumice produces cellulosic-thermoplastic composite that has superior extrusion properties over conventional metal stearate/ethylene bis-stearamide (EBS) compositions such as improved flex strength and resistance to water absorption.
    Type: Application
    Filed: July 14, 2006
    Publication date: February 1, 2007
    Inventors: William Sigworth, Robert Rowland, Mark Richardson