Patents by Inventor Michael P. Demkowicz

Michael P. Demkowicz 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).

  • Orifice sealing device
    Patent number: 4136825
    Abstract: The disclosure is directed to a device for sealing the neck of apparatus which utilizes a wicking action to move liquid from the interior of a container to the surrounding atmosphere. The wick is disposed about an inner core of a cellulosic material which when wetted, expands to press the wick against the sides of the orifice. The wicking action is improved and the spilling of the contents through the orifice, in the event of an upset of the container, is prevented.
    Type: Grant
    Filed: February 22, 1977
    Date of Patent: January 30, 1979
    Assignee: American Home Products Corporation
    Inventors: Frank J. Mack, Michael P. Demkowicz