Patents by Inventor William T. Hahn

William T. Hahn 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).

  • Process for producing a raised embossed effect
    Patent number: 4217380
    Abstract: A process for producing a raised embossed effect on a substrate comprising contacting the substrate with a pattern roll having depressions therein. The depressions are filled with a coating composition comprising a filler, a binder for the filler, water, and montmorillonite. The coating composition is transferred to the substrate in an embossed pattern while retaining the shape of the coating composition. Water is then removed from the coating composition.
    Type: Grant
    Filed: September 22, 1978
    Date of Patent: August 12, 1980
    Assignee: The Celotex Corporation
    Inventors: Joseph J. Medica, William T. Hahn