Patents Represented by Attorney Samuel Kurlandksy

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  • Pressure coating of mineral fillers
    Patent number: 4520073
    Abstract: Mineral filler materials are provided with improved hydrophobic coatings by pressure coating of porous minerals using steam as a carrier for the coating material. Thereby more complete sealing of fissures and cracks in the porous filler materials' surface is provided, resulting in very water-resistant coated particles useful in filling polymeric substrates such as paints, plastics and joint compounds.
    Type: Grant
    Filed: December 23, 1983
    Date of Patent: May 28, 1985
    Assignee: USG Corporation
    Inventors: Donald A. Randolph, Kenneth R. Watkins