Patents by Inventor Ronald M. Kessler

Ronald M. Kessler 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).

  • Linerless plastic closures
    Patent number: 4850497
    Abstract: An improved linerless plastic closure for large mouthed bottles and jars includes a plurality of ribs, at least one of which is wavy, projecting downwardly from the undersurface of the closure so as to contact the upper edge of the bottle or jar mouth. The wavy ribs give better surface contact with the upper edge of the bottle than conventional circular ribs.
    Type: Grant
    Filed: May 9, 1988
    Date of Patent: July 25, 1989
    Inventor: Ronald M. Kessler