Patents by Inventor Riley E. Asay

Riley E. Asay 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).

  • High impact polyvinyl halide compositions
    Patent number: 5250616
    Abstract: A high impact polyvinyl halide composition containing a polyvinyl halide polymer, a high rubber content copolymer of acrylonitrile, bitadiene and styrene, a copolymer of .alpha. methyl styrene and acrylonitrile, and a copolymer of ethylene and vinyl acetate.
    Type: Grant
    Filed: April 9, 1992
    Date of Patent: October 5, 1993
    Assignee: Vista Chemical Company
    Inventors: Riley E. Asay, David Mok