Patents by Inventor Robert Wiethorn

Robert Wiethorn 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).

  • Mold release composition
    Patent number: 6620230
    Abstract: A mold release composition and a method of forming molded articles using the mold release composition. The mold release composition of the present invention comprises at least one low vapor pressure hydrocarbon fluid and may further include an acid bearing release modifying material. An effective amount of the mold release composition is applied to mold surfaces to facilitate the release of a molded article formed by curing a molding media on the mold surface. By virtue of the low vapor pressure of the hydrocarbon fluid, the mold release composition is nonhazardous, nonflammable and environmentally friendly, including moderate to high biodegradability.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: September 16, 2003
    Assignee: Franklynn Industries, Inc.
    Inventors: Robert Wiethorn, Lev Dashevsky, Jason Huff