Patents by Inventor Robert W. Sauer

Robert W. Sauer 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).

  • Welded thermoplastic polymer article and a method and apparatus for making same
    Patent number: 5814175
    Abstract: A method and apparatus for making a welded thermoplastic polymer article are provided. The method includes the application of a vacuum combined with sufficient heat to make the polymer flowable. The method and apparatus are especially well-suited for welding thermoplastic polymer sheets to the interior of process vessels. The resulting article has improved qualities over articles which are welded by other methods.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: September 29, 1998
    Assignee: Edlon Inc.
    Inventors: Steven E. Rau, Brian G. Morris, Robert W. Sauer