Patents by Inventor John M. Szymanski

John M. Szymanski 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).

  • Can seal
    Patent number: 5143241
    Abstract: An improved can seal is provided for a beverage can having a generally cylindrical body with a closed bottom end and an open top end, a top closure. The can seal consists of the open top end of the body that has an outwardly curled edge thereabout. The top closure has an outwardly hemmed edge formed over the outwardly curled edge of the body, to form a sealing rim on the exterior of the body. All of the liquid contents within the body can be extracted therefrom without any obstruction from the sealing rim.
    Type: Grant
    Filed: May 23, 1991
    Date of Patent: September 1, 1992
    Inventor: John M. Szymanski