Patents by Inventor Norman E. Lawes

Norman E. Lawes 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).

  • Plastics bag
    Patent number: 4073429
    Abstract: A plastics-film bag having one wall formed by overlapping panels joined by a longitudinal seal, and having a filling valve constituted by a passageway left between the panels, in which at least one additional layer of film or other flexible material is included between the panels in the overlap, to improve the security of the valve.
    Type: Grant
    Filed: June 21, 1976
    Date of Patent: February 14, 1978
    Assignee: Imperial Chemical Industries Limited
    Inventor: Norman E. Lawes