Patents by Inventor Thomas W. Pennie

Thomas W. Pennie 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).

  • Patent number: 4375520
    Abstract: A procedure is provided for the production of clean, dustless particulate granules from dusty, dirty particles by treatment with a composition comprising a liquid polymeric substance, illustratively, epoxidized soybean oil, and a solid, low molecular weight polymer having a melting point in the range of about 95.degree. to 105.degree. C., illustratively, a polyethylene vinyl acetate copolymer in the proportions of from 1 part of solid polymer to 1 part of liquid polymeric substance to 2 parts of solid polymer to 1 part of liquid polymeric substance. In one modification of the procedure, the ingredients were charged to a Papenmeir mixer and the mixer was run at 1500 RPM until a temperature of 95.degree. C. was reached. The resulting product comprised clean, dustless uniform beads.
    Type: Grant
    Filed: April 10, 1981
    Date of Patent: March 1, 1983
    Assignee: Dart Industries Inc.
    Inventors: Thomas W. Pennie, Sunil S. Parikh, Charles Lowe