Patents by Inventor William R. Burke

William R. Burke 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).

  • Mica-free joint compound
    Patent number: 4286995
    Abstract: A joint compound, having crack resistance substantially equal to joint compounds containing mica, wherein the mica has been replaced by low length to width ratio gypsum crystals formed by the hydration of calcium sulfate to calcium sulfate dihydrate, particularly crystals formed in the presence of citric acid.
    Type: Grant
    Filed: March 27, 1980
    Date of Patent: September 1, 1981
    Assignee: National Gypsum Company
    Inventors: Richard E. Smith, William R. Burke
  • Bonded two piece metal stud
    Patent number: 4152873
    Abstract: Formed sheet metal elongate studs and furring channels with two separate sections bonded together, each section having means for attachment to a wall base or a wall facing material. The sections are bonded together with a heat-sensitive material, preferably a hot-melt adhesive, which melts and separates the sections in a fire, and also tends to reduce thermal conductivity through the stud under conditions that do not melt the adhesive.
    Type: Grant
    Filed: September 14, 1977
    Date of Patent: May 8, 1979
    Assignee: National Gypsum Company
    Inventor: William R. Burke