Patents Represented by Attorney Kenneth R. Roberts

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  • Asbestos-free joint compounds
    Patent number: RE29753
    Abstract: A joint compound which is preferably asbestos-free, for use in finishing joints between wallboards, comprising a filler, a binder, and any two or all three of a water-holding agent; a slip-inducing colloid; and a non-swelling clay having sufficient pseudoplasticity to render the composition non-leveling.
    Type: Grant
    Filed: December 27, 1976
    Date of Patent: September 5, 1978
    Assignee: United States Gypsum Company
    Inventor: Terrance L. Williams