Patents by Inventor Nina M. Kuper

Nina M. Kuper 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).

  • Decorative tile
    Patent number: 4693924
    Abstract: A decorative tile having a front face with a design thereon varies in density so that the front face of the tile presents a solid appearance, but the overall weight of the tile is less than for a comparable conventional plaster tile. The tile of the invention can be made from a mixture including a binder, fiber strands, and a bulk enhancing agent. The decorative tile of this invention is particularly useful for ceiling decoration.
    Type: Grant
    Filed: August 14, 1986
    Date of Patent: September 15, 1987
    Inventors: Nina M. Kuper, Janis I. Kalnajs
  • Decorative tile
    Patent number: 4687694
    Abstract: A gypsum plaster and chopped glass fiber tile having increased insulation values, reduced weight and reduced density due to the presence of vermiculite and perlite.
    Type: Grant
    Filed: February 13, 1985
    Date of Patent: August 18, 1987
    Inventors: Nina M. Kuper, Janis I. Kalnajs