Patents by Inventor Gregory W. Marquart

Gregory W. Marquart 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).

  • Membrane cleaning process
    Patent number: 4740308
    Abstract: A process for cleaning fouled separation membranes such as ultrafiltration, reverse osmosis, and microfiltration membranes is provided comprising: removing a separation membrane having a fouled surface from operation; effecting reaction on the fouled surface of said membrane of an inorganic peroxide and an alkali metal or alkaline earth metal hypohalite; and thereafter, substantially removing the foulant and the reaction products thereof from the membrane surface.
    Type: Grant
    Filed: April 26, 1984
    Date of Patent: April 26, 1988
    Assignee: Champion International Corporation
    Inventors: Henry A. Fremont, Richard C. Agar, James W. Bray, Gregory W. Marquart