Patents by Inventor Henry S. Dzedzej

Henry S. Dzedzej 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).

  • Method of forming a seal
    Patent number: 4938818
    Abstract: The present invention is for a method of forming a seal in a prior art collapsible tube assembled in a prior art manner. A laminate seal is cut, positioned and held, and welded to the dispensing orifice of a rigid plastic head after the head is molded, but before it is assembled to the tube wall. The seal is protected during the welding of the wall to the head by the use of a heat sink.
    Type: Grant
    Filed: December 29, 1988
    Date of Patent: July 3, 1990
    Assignee: Teledyne Industries, Inc.
    Inventors: Henry S. Dzedzej, Richard F. DeRosa, Carl B. Schartner