Patents by Inventor Jeffry T. Russart

Jeffry T. Russart 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).

  • Abuse-resistant cast acoustical ceiling tile having an excellent sound absorption value
    Patent number: 8337976
    Abstract: An abuse-resistant, cast acoustical ceiling tile having improved impact resistance and excellent sound absorption values. The ceiling tiles have aggregate particles applied to the surface of a wet pulp in the casting process and the particles are embedded in the pulp by compression with a roll and/or smooth plates. The aggregate particles have an average particle diameter of at least about 1,000 microns. The ceiling tiles have excellent sound absorption properties with a noise reduction coefficient (NRC) of at least about 0.50. Calcium carbonate is the preferred aggregate particle material.
    Type: Grant
    Filed: February 26, 2004
    Date of Patent: December 25, 2012
    Assignee: USG Interiors, Inc.
    Inventors: Thomas M. Mayers, David B. Bitzan, Jeffry T. Russart