Patents by Inventor Don Greg Hendershot

Don Greg Hendershot 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).

  • Foundry binder of epoxy resin, acrylated polyisocyanate and acrylic
    Patent number: 6441060
    Abstract: The subject invention relates to a foundry binder system which cures in the presence of a volatile amine curing catalyst comprising (a) an epoxy resin, (b) an acrylated organic polyisocyanate, (c) a reactive unsaturated acrylic monomer, acrylic polymer, or mixtures thereof, and (d) an oxidizing agent comprising a hydroperoxide. The foundry binders are used for making foundry mixes. The foundry mixes are used to make foundry shapes which are used to make metal castings.
    Type: Grant
    Filed: September 14, 2000
    Date of Patent: August 27, 2002
    Assignee: Ashland Inc.
    Inventors: Don Greg Hendershot, Edward Gerard Toplikar, Laurence G. Dammann, Vincent J. Pascarella
  • Amine curable foundry binder system
    Patent number: 6342543
    Abstract: The subject invention relates to a foundry binder system that cures in the presence of a volatile amine curing catalyst. The binder system comprises (a) a compound containing at least two active methylene hydrogen atoms, (b) an organic polyisocyanate (c) a reactive unsaturated acrylic monomer and/or polymer, (d) an oxidizing agent, and preferably (e) an epoxy component. The foundry binders are used for making foundry mixes. The foundry mixes are used to make foundry shapes that are used to make metal castings.
    Type: Grant
    Filed: September 24, 1999
    Date of Patent: January 29, 2002
    Assignee: Ashland Inc.
    Inventors: Thomas M. Moy, Raymond Scott Harvey, Edward G. Toplikar, Gary M. Carlson, Don Greg Hendershot