Patents by Inventor Thomas Haydn Williams

Thomas Haydn Williams 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).

  • Polyurethane thin-walled articles with a rough surface, and method of producing the same
    Patent number: 6143416
    Abstract: A method of forming a thin-walled article, namely a surgeon's glove, having an outer grip coating of a first elastomer on a high modulus polyurethane substrate, wherein the outer coating has a rough surface to provide surface grip and the polyurethane substrate provides the majority of the glove's thickness, the method including coating a roughened former with a first elastomer that substantially does not retain bubbles that may be formed; coating a high modulus polyurethane to the coated former to form the main body of the article; drying and/or curing the composite article; and stripping the composite article from the former, whereby the surface of the first elastomer has a rough surface to provide surface grip. A surgeon's glove including an outer grip coating of a first elastomer on a high modulus polyurethane substrate, wherein the coating has a rough surface to provide surface grip and the polyurethane layer provides the majority of the glove's thickness.
    Type: Grant
    Filed: January 25, 1999
    Date of Patent: November 7, 2000
    Assignee: LRC Products Limited
    Inventors: Philip Wayne Brindle, Thomas Haydn Williams