Patents by Inventor Richard J. Hayman

Richard J. Hayman 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).

  • Kinetically controlled in-situ generation of catalytic species for the curing of epoxy/amine compositions
    Patent number: 5688877
    Abstract: A method of preparing epoxy parts wherein the interval of low viscosity of an amine-hardened epoxy system can be extended without sacrifice of cure time. Suitable catalysts for the epoxy-amine hardener reaction are generated in situ. As an advantage, more epoxy articles may be prepared with a given mold capacity having improved wet-out of fiber reinforcement attributed to a larger interval of low viscosity.
    Type: Grant
    Filed: June 11, 1996
    Date of Patent: November 18, 1997
    Assignee: The Dow Chemical Company
    Inventors: Raymond A. Koenig, Joseph Gan, Richard J. Hayman