Patents by Inventor Reinhard Nowag

Reinhard Nowag 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).

  • Valved sack
    Patent number: 4524460
    Abstract: A sack is constructed from a thermoplastic film of which the side portions are brought into partial overlapping relationship to define a tube section and top and bottom weld seams are applied transversely. A longitudinal weld seam applied within the confines of the region of overlap terminates at a spacing from the top weld seam to define a filling valve passage. The region of overlap contains a longitudinal inner strip of reduced thickness made in one piece with the walls of the sack.
    Type: Grant
    Filed: February 13, 1984
    Date of Patent: June 18, 1985
    Assignee: Windmoller & Holscher
    Inventors: Karl-Heinz Twiehoff, Reinhard Nowag