Patents by Inventor Robert O. Rau

Robert O. Rau 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).

  • Defoamer emulsion
    Patent number: 5096617
    Abstract: A mixture in-oil antifoam composition comprising a mixture of a defoaming agent comprising a defoamer in an oil carrier, a non-ionic surfactant having an HLB number less than about 10, and water. In particular, the defoamer is particulate hydrophobic silica dispersed in oil and the non-ionic surfactant has an HLB number of between 2 to 8.
    Type: Grant
    Filed: May 24, 1990
    Date of Patent: March 17, 1992
    Assignee: The B. F. Goodrich Company
    Inventors: Lawrence E. Ball, Philip Smith, Robert O. Rau
  • Anti-wick agent for textile printing
    Patent number: 4897442
    Abstract: The spread of printing paste when applied to textiles is inhibited by the inclusion of an "anti-wick agent" in the print paste. The "anti-wick agent" comprises a copolymer resulting from the polymerization of at least one monomer selected from the group consisting of methacrylic acid, acrylic acid, maleic acid and maleic anhydride with at least one monomer selected from the group consisting of acrylate esters and N-substituted acrylamides.
    Type: Grant
    Filed: July 11, 1988
    Date of Patent: January 30, 1990
    Assignee: The Standard Oil Company
    Inventors: Lawrence E. Ball, Robert O. Rau, Philip Smith