Patents by Inventor Godric S. Yearwood

Godric S. Yearwood 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).

  • Patent number: 6028139
    Abstract: The invention is directed to aqueous coating compositions which are freeze-thaw stable in the absence of conventional volatile coalescing solvents and volatile freeze-thaw (F/T) additives and which utilize a latex binder which contains an EVA thermoplastic interpolymer which is prepared by emulsion polymerization of ethylene, vinyl acetate and a surface active initiator having an azo group as radical generating functionality and an anionic substituent, and to latex binders which contain the EVA interpolymer.
    Type: Grant
    Filed: September 16, 1997
    Date of Patent: February 22, 2000
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Rajeev Farwaha, Judie Mae Tinamisan, Godric S. Yearwood
  • Patent number: 6001927
    Abstract: Latex paint compositions containing water, pigment and a latex wherein the latex is prepared by emulsion polymerization of at least one ethylenically unsaturated monomer in the presence of 0.1 to 0.2 pphm of at least one hydrophobically modified starch having the structure ##STR1## In the above structure, St is a starch base material, R.sup.1 is a dimethylene or trimethylene group, R.sup.2 is selected from the group consisting of alkyl, alkenyl, aralkyl and aralkenyl groups having 2 to 20 carbon atoms, and Y is selected from the group consisting of hydrogen, alkali metal, alkaline earth metal and ammonium. The hydrophobically modified starch is the reaction product of starch and an anhydride moiety and provides the latex paint with improved rheological properties and allows for easier spreading and less dripping of paint.
    Type: Grant
    Filed: September 16, 1998
    Date of Patent: December 14, 1999
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Robert L. Billmers, Rajeev Farwaha, Godric S. Yearwood, Lien Phan