Patents by Inventor Marc J. Elkowitz

Marc J. Elkowitz 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).

  • Inflatable temporary boat hull seal assembly
    Patent number: 5143012
    Abstract: An apparatus for temporarily sealing a hole in the hull of a boat comprising an inflatable seal portion disposed adjacent the outer surface of the hull, means for inflating said seal portion and a structural support portion disposed adjacent the inner surface of the hull to maintain said seal portion in intimate contact with the hull of the ship to prevent the flow of water therethrough.
    Type: Grant
    Filed: July 16, 1991
    Date of Patent: September 1, 1992
    Inventor: Marc J. Elkowitz