Patents by Inventor David Russell Willis

David Russell Willis 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).

  • Laminated wood piece and door containing the same
    Publication number: 20030150189
    Abstract: A laminated wood piece is disclosed comprising a solid hardwood component having an upper surface and a lower surface that are substantially parallel to each other and a wood composite component having layers oriented substantially parallel to the lower surface of the solid hardwood component. The ratio of a thickness of the solid hardwood component to a thickness of the wood composite component being from about 1:1 to about 1:10. The laminated wood piece is suitable for use a door stile.
    Type: Application
    Filed: February 8, 2002
    Publication date: August 14, 2003
    Inventors: Nian hua Ou, David Russell Willis