Patents by Inventor Lawrence Gettleman

Lawrence Gettleman 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).

  • Soft denture liner
    Patent number: 4661065
    Abstract: The invention provides a denture liner composition for a composite denture based on a phosphonitrilic fluoroelastomer [poly(fluoroalkoxy)phosphazene] curable at atmospheric pressure at temperatures of about 100.degree. C. or less, conveniently by immersing the packed denture flask in a water bath at the appropriate temperature. The composition includes trimethacrylate and dimethacrylate cross-linking agents for increasing liner hardness and decreasing water sorption characteristics of the cured liner. The composition preferably further includes filler materials for increasing the hardness of the liner product. The composite denture is preferably prepared in a one-step process wherein the liner composition material of a single firmness is cured in situ with the denture base material.
    Type: Grant
    Filed: December 4, 1985
    Date of Patent: April 28, 1987
    Assignee: Gulf South Research Institute
    Inventors: Lawrence Gettleman, Paul H. Gebert
  • Soft and firm denture liner for a composite denture and method for fabricating
    Patent number: 4543379
    Abstract: The invention provides a denture liner composition for a composite denture based on a phosphonitrilic fluoroelastomer (poly(fluoroalkoxy)phosphazene) curable at atmospheric pressure at temperatures of 100.degree. C. or less, conveniently by immersing the packed denture flask in a water bath at the appropriate temperature. The composition includes filler materials for increasing the hardness of the cured liner, interpenetrating polymers for increasing firmness and bond strength, and cross-linking agents for increasing the tensile strength and bond strength of the cured liner. The composite denture is preferably prepared in a one-step process wherein the liner composition material of a single firmness is cured in situ with the denture base material.
    Type: Grant
    Filed: December 8, 1983
    Date of Patent: September 24, 1985
    Assignee: Gulf South Research Institute
    Inventors: Lawrence Gettleman, Charles L. Farris, H. Ralph Rawls, Ralph J. LeBouef, Jr.
  • Soft and firm denture liner for a composite denture and method for fabricating
    Patent number: 4432730
    Abstract: The invention provides a denture liner composition for a composite denture based on a phosphonitrilic fluoroelastomer (poly(fluoroalkoxy)phosphazene) curable at atmospheric pressure at temperatures of 100.degree. C. or less, conveniently by immersing the packed denture flask in a water bath at the appropriate temperature. The composition includes filler materials for increasing the hardness of the cured liner, interpenetrating polymers for increasing firmness and bond strength, and cross-linking agents for increasing the tensile strength and bond strength of the cured liner. The composite denture is preferably prepared in a one-step process wherein the liner composition material of a single firmness is cured in situ with the denture base material.
    Type: Grant
    Filed: October 1, 1982
    Date of Patent: February 21, 1984
    Assignee: Gulf South Research Institute
    Inventors: Lawrence Gettleman, Charles L. Farris, H. Ralph Rawls, Ralph J. LeBouef, Jr.