Patents by Inventor Ralph E. Unruh

Ralph E. Unruh 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).

  • Patent number: 4689259
    Abstract: A decorative floor covering in tile form has a design printed on its upper surface. Particles are positioned on the upper surface of the tile with at least some of the particles being placed on the tile surface in register with the design printed on the tile surface. A cured wear layer overlies both the particle and the plastic base, whereby the wear layer surface in the areas containing particles and in the areas not containing particles will be of different gloss characteristics.The process requires the sprinkling of particles over an adhesive coated surface to retain the particles in registration with a printed design on the tile surface.
    Type: Grant
    Filed: August 23, 1984
    Date of Patent: August 25, 1987
    Assignee: Armstrong World Industries, Inc.
    Inventors: Jesse D. Miller, Jr., James A. Tshudy, Ralph E. Unruh
  • Patent number: 4504523
    Abstract: A decorative plastic floor tile composed of a decorative plastic base having a plurality of elements positioned on the base with a clear or translucent wear layer overlying the elements and the base. The base has raised and depressed areas. The elements comprise particles, preferably inorganic and rounded, and these are embedded in a plastic matrix which is placed only on the raised areas of the base. The particles are distributed throughout the matrix in a single layer of particles with the particles protruding from the matrix but being below the upper most level of the wear layer.
    Type: Grant
    Filed: June 13, 1983
    Date of Patent: March 12, 1985
    Assignee: Armstrong World Industries, Inc.
    Inventors: Jesse D. Miller, Jr., James A. Tshudy, Ralph E. Unruh
  • Patent number: 4418109
    Abstract: A decorative plastic floor tile composed of a decorative plastic base having a plurality of elements positioned on the base with a clear or translucent wear layer overlying the elements and the base. The base has raised and depressed areas. The elements comprise particles, preferably inorganic and rounded, and these are embedded in a plastic matrix which is placed only on the raised areas of the base. The particles are distributed throughout the matrix in a single layer of particles with the particles protruding from the matrix but being below the upper most level of the wear layer.
    Type: Grant
    Filed: March 29, 1982
    Date of Patent: November 29, 1983
    Assignee: Armstrong World Industries, Inc.
    Inventors: Jesse D. Miller, Jr., James A. Tshudy, Ralph E. Unruh