Patents by Inventor Paul David Stidworthy

Paul David Stidworthy 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).

  • Painted plastics articles
    Patent number: 5932357
    Abstract: A painted plastics article in the form of a vehicle wing comprises a polypropylene substrate with a polyamide or polyester coating formed by dual injection or blow moulding. The coating makes the wing suitable for subsequent painting which may be carried out on a normal vehicle paint line used to paint a metal body-in-white. To promote adhesion between the polypropylene substrate and the coating, the substrate includes an admixture of a compatibiliser such as a maleic anhydride grafted polypropylene.
    Type: Grant
    Filed: June 20, 1997
    Date of Patent: August 3, 1999
    Assignee: Rover Group Limited
    Inventors: Robert John Coates, Ronald Arthur Easterlow, Gordon Frederick Smith, Paul David Stidworthy