Patents by Inventor Revathi Tomko

Revathi Tomko 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).

  • Self-polishing anti-fouling compositions
    Publication number: 20050096407
    Abstract: The invention is a self-polishing antifouling coating composition that comprises at least one biocidally active material; and a polymer binder, wherein the polymer binder is a film-forming, alkyd-stabilized non-aqueous dispersion having an acrylic core and a nonvolatile material content greater than 75%.
    Type: Application
    Filed: October 18, 2004
    Publication date: May 5, 2005
    Inventors: Revathi Tomko, Dino Papagianidis, John Joecken, James Reuter
  • Hydrophilically end-capped polyurethane thickeners
    Patent number: 6316540
    Abstract: This invention relates to polyurethane thickeners having particular utility in paints and coatings comprising the reaction product of an isocyanate functional material, a polyether polyol, and a difunctional hydrophilic endcapping material that is reactive with isocyanates.
    Type: Grant
    Filed: March 30, 2000
    Date of Patent: November 13, 2001
    Assignee: The Sherwin-Williams Company
    Inventors: Randolph B. Krafcik, Revathi Tomko, Paul M. Kayima, Anthony B. Sharrotta, Hyeong-Chan Youn
  • Penetrating stains and sealants from polyurethane dispensions
    Patent number: 5310780
    Abstract: Low VOC penetrating compositions for staining and protecting porous substrates such as wood, concrete, cement, brick and the like, comprising aqueous dispersions of polyurethane-ureas.
    Type: Grant
    Filed: August 26, 1993
    Date of Patent: May 10, 1994
    Assignee: The Sherwin-Williams Company
    Inventors: Revathi Tomko, Sanford L. Hertz, Buckel, Jr. Charles T., Mitchell R. Draving