Patents by Inventor Michael F. Lieber

Michael F. Lieber 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).

  • Stair tread with integral non-slip layer
    Publication number: 20040244314
    Abstract: The invention is a non-slip rug sized to cover a substantial portion of a stair. The non-slip rug includes an upper rug-like layer. The non-slip rug includes an integral non-slip base layer positioned on a bottom side of the upper rug layer. When the non-slip rug is positioned on a stair, the base directly contacts the stair and prevents movement of the non-slip rug.
    Type: Application
    Filed: March 12, 2004
    Publication date: December 9, 2004
    Inventor: Michael F. Lieber