Patents by Inventor Larry Dale Grina

Larry Dale Grina 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).

  • (Meth) acrylate copolymers having excellent low temperature properties
    Patent number: 5955405
    Abstract: Non-dispersant poly (meth) acrylate copolymers comprising from about 5 to about 15 weight percent butyl methacrylate; from about 70 to about 90 weight percent of a C10-C15 alkyl (meth) acrylate; and from about 5 to about 10 weight percent of a C16-C30 alkyl (meth) acrylate provide excellent low temperature properties to lubricating oils.
    Type: Grant
    Filed: August 10, 1998
    Date of Patent: September 21, 1999
    Assignee: Ethyl Corporation
    Inventors: Gregory Peter Liesen, Sanjay Srinivasan, Larry Dale Grina