Patents by Inventor James O. Pressley

James O. Pressley 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).

  • Sag-resistant ceiling panel
    Patent number: 4611445
    Abstract: A ceiling panel resistant to sag when exposed to a fire in a room comprising mineral wool fibers and lithium carbonate, or the fused decomposition product thereof.
    Type: Grant
    Filed: December 7, 1984
    Date of Patent: September 16, 1986
    Assignee: Armstrong World Industries, Inc.
    Inventor: James O. Pressley