Patents by Inventor Martha L. Robertson

Martha L. Robertson 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).

  • Ternary adhesive compositions
    Patent number: 4839422
    Abstract: An adhesive composition which contains a thermoplastic elastomer which includes ethylene propylene rubber, ethylene propylene diene monomer, polyisobutylene butyl rubber, ethylene vinyl acetate graft copolymers thereof with C.sub.3 to C.sub.10 unsaturated mono- and polycarboxylic acids, a tackifying resin and a di- or polyamine cross-linking agent having 2-10 carbon atoms, which is useful as a hot melt or pressure sensitive adhesive having enhanced higher temperature properties.
    Type: Grant
    Filed: December 23, 1987
    Date of Patent: June 13, 1989
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Kenneth O. McElrath, Martha L. Robertson, Wai Y. Chow