Patents by Inventor Ralph H. Kenan

Ralph H. Kenan 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).

  • Multiwall pouch bag with vent strip
    Patent number: 4470153
    Abstract: A multiwall bag having an interior plastic pouch formed from a sealed plastic tube having a longitudinal seam comprising overlapping tube margins sealed together by two spaced seals to provide a channel, one of the tube margins being formed with openings providing communication between the interior of the tube and the channel to permit escape of air from the tube. A strip of material is disposed along the length of the channel to prevent the overlapping tube margins from adhering to each other between the spaced seals.
    Type: Grant
    Filed: March 8, 1982
    Date of Patent: September 4, 1984
    Assignee: St. Regis Paper Company
    Inventor: Ralph H. Kenan