Patents by Inventor Warren G. Duncan

Warren G. Duncan 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).

  • Epoxy powder coating with wrinkle finish
    Patent number: 5688878
    Abstract: Powdered coating compositions and methods for obtaining improved wrinkled finishes with epoxy powder coatings are provided which utilize curing agents other than commercially available methylenedisalicylic acid.
    Type: Grant
    Filed: May 17, 1996
    Date of Patent: November 18, 1997
    Assignee: Morton International, Inc.
    Inventors: Owen H. Decker, David A. Mountz, Warren G. Duncan
  • Process for recycling cured polysulfide sealants
    Patent number: 5349091
    Abstract: Solid waste materials comprising oxidatively-cured, solid polysulfide sealants containing spent oxidant, fillers, plasticizers, and other formulating aids are reverted to a liquid sealant comprising mercaptan-terminated polysulfides by reducing them with a liquid mercaptan-terminated polysulfide at temperatures ranging from about 50.degree. to about 110.degree. C. Upon the addition of fresh curing agent and recuring, the reclaimed sealant has satisfactory tensile strength and elongation properties.
    Type: Grant
    Filed: April 27, 1993
    Date of Patent: September 20, 1994
    Assignee: Morton International, Inc.
    Inventors: Michael J. Hallisy, John R. Gilmore, Steven J. Hobbs, Warren G. Duncan