Patents by Inventor Dean C. Kral

Dean C. Kral 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).

  • Paint can sealer
    Patent number: 5339981
    Abstract: A sealing device for sealing the surface of contents of a container comprises a disc-like member having a central portion and a flexible perimeter and having a centrally located upstanding hollow handle having a purge valve at the upper end thereof. The purge valve has a closed position for preventing egress of air upwardly through said hollow handle and an open position to permit free passage of air therethrough. The disc-like member is contoured to correspond with the shape of the interior plan of the container.
    Type: Grant
    Filed: February 2, 1993
    Date of Patent: August 23, 1994
    Inventor: Dean C. Kral