Patents by Inventor Richard A. Leocavallo

Richard A. Leocavallo 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).

  • Filtering unit having separately attachable filter cassette, filter cassette, and method of filtering
    Publication number: 20030010708
    Abstract: A filtering unit including an upper container for receiving fluid to be filtered, a lower container for receiving the fluid from the upper container and an intermediate filter cassette. The filter cassette includes a support member connected with a flat filter member, such as a membrane filter, and can be removed with respect to each of the upper and lower containers. The filter cassette may be inserted within the upper container with sealing engagement between the support member and the internal wall of the upper container. The various disclosed embodiments include the ability to serially connect multiple filter cassettes generally between the liquid contained in the upper container and the lower container.
    Type: Application
    Filed: September 11, 2002
    Publication date: January 16, 2003
    Applicant: Nalge Nunc International Corporation
    Inventors: Richard A. Leocavallo, Mark Giverc