Patents by Inventor Charles Moore Harmuth

Charles Moore Harmuth 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).

  • Thermoplastic polyvinyl chloride-acrylic powder coating composition
    Patent number: 4113681
    Abstract: A thermoplastic powder coating composition of powder particles having a size in the range of about 1-100 microns in which the powder particles are a blend of(A) a polyvinyl chloride terpolymer of vinyl chloride/vinyl acetate/maleic acid and(B) an acrylic polymer and(C) an ester plasticizer;The powder can contain in addition to the above polymers a heat stabilizer such as an organometallic mercaptide, an epoxy resin, pigments, ultraviolet light-absorbing agents and polyethylene wax; the powder coating composition is useful as a finish for metals such as tubing, wires, fence posts, lawn furniture, play equipment and the like.
    Type: Grant
    Filed: May 10, 1977
    Date of Patent: September 12, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Charles Moore Harmuth