Patents by Inventor Joseph P. Smejkal

Joseph P. Smejkal 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).

  • EPDM compositions with improved paintability
    Patent number: 4000219
    Abstract: Blends of ethylene-propylene-diene monomer terpolymers (EPDM) containing from about 4% to about 40% by weight based on the total composition of a graft copolymer selected from the group acrylonitrile-butadiene styrene (ABS), methyl methacrylate-acrylonitrile-butadiene-styrene (MABS) and methyl methacrylate-butadiene-styrene (MBS) graft polymers exhibit improved paint adhesion characteristics when molded and cured.
    Type: Grant
    Filed: April 24, 1975
    Date of Patent: December 28, 1976
    Assignee: Borg-Warner Corporation
    Inventor: Joseph P. Smejkal