Patents by Inventor Alfred J. Whitton

Alfred J. Whitton 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).

  • Rheological agents and thickeners
    Patent number: 5164433
    Abstract: A rheological agent and thickener composition for aqueous systems, comprising a mixture of clay, such as hectorite, a synthetic polymer and a starch-type material. The mixture provides efficient thickening, sag resistance, spatter resistance and stability in water-based systems, particularly in latex-based coatings.
    Type: Grant
    Filed: April 17, 1991
    Date of Patent: November 17, 1992
    Assignee: Rheox, Inc.
    Inventors: Anthony P. Ricci, Alfred J. Whitton, Hemi N. Nae
  • Synthetic polymer
    Patent number: 4226754
    Abstract: There is provided a synthetic polymer useful as a thickener in aqueous compositions. The polymer preferably comprises the reaction product of methacrylic acid, methyl methacrylate and vinyl acetate in certain specified proportions. The thickener is particularly effective in latex paint formulations.
    Type: Grant
    Filed: June 8, 1978
    Date of Patent: October 7, 1980
    Assignee: NL Industries, Inc.
    Inventors: Han B. Yun, Alfred J. Whitton