Patents by Inventor Barry M. Barkel

Barry M. Barkel 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).

  • Multiple filter press diaphragm former
    Patent number: 3970516
    Abstract: Apparatus for producing a plurality of filter press diaphragms at any one time is disclosed herein. In one form of the invention the apparatus includes a sealed housing containing a plurality of sealed modules fed from a common header, to produce the diaphragms batch-wise. In another form of the invention, an indexing table is employed to produce the diaphragms continuously.
    Type: Grant
    Filed: December 23, 1974
    Date of Patent: July 20, 1976
    Assignee: BASF Wyandotte Corporation
    Inventors: Barry M. Barkel, Stephen M. Collins, William M. Herring