Patents by Inventor Henry C. Twiggs

Henry C. Twiggs 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).

  • Application of polymeric powders to a substrate
    Patent number: T999002
    Abstract: The present invention provides a method for coating a substrate with a thermoplastic polymeric powder, especially polyester powder, by forming an emulsion containing fine particles of such powder, applying the emulsion to the substrate, and heating the coated substrate to a temperature sufficiently high to evaporate the liquid from the emulsion and thermally bond the particles to the substrate. The emulsifying agents are fatty acid esters of glycerol.
    Type: Grant
    Filed: October 2, 1979
    Date of Patent: October 7, 1980
    Inventors: Henry C. Twiggs, James L. Suggs, Dan F. Buck