Patents by Inventor David W. Griffith

David W. Griffith 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).

  • Quaternary ammonium adducts of polymerizable tertiary ammonium salts and acrylamide
    Patent number: 4179549
    Abstract: This invention relates to adducts of salts of polymerizable tertiary amines with acrylic compounds illustrated by acrylamide and acrylonitrile; to polymers and copolymers containing said adducts and to processes for preparing them. This invention also relates to the use of said polymers and copolymers, particularly in the clarification of turbid waters by flocculation or flotation of oil and/or suspended solids. In the preferred embodiment, the quaternary adduct monomer is: ##STR1## where X is an anion, preferably halide such as chloride or carboxylate such as acetate; and polymers and copolymers containing units thereof.
    Type: Grant
    Filed: November 14, 1974
    Date of Patent: December 18, 1979
    Assignee: Petrolite Corporation
    Inventors: Rudolf S. Buriks, Allen R. Fauke, David W. Griffiths