Patents by Inventor Bernard Varney

Bernard Varney 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).

  • Method and apparatus for determining permeability of filter media
    Patent number: 4128004
    Abstract: In the measurement of the permeability of a filter medium a cake of the medium is formed in a holder by supplying an excess of the medium, as a suspension under pressure, to the holder, the pressure being relieved and the excess portion being removed to leave an undried cake of medium when the excess portion has dried to a given level as sensed by a pair of electrodes. Two further electrodes are used to determine the time for a given volume of liquid to pass through the cake for measuring its permeability.
    Type: Grant
    Filed: September 22, 1978
    Date of Patent: December 5, 1978
    Assignee: Societe Anonyme dite: CECA S.A.
    Inventors: Jacques Caron, Jean-Claude Poncet, Bernard Varney