Patents by Inventor Irenee J. Philippe

Irenee J. Philippe 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).

  • Use of polymers in the recycled fiber washing/deinking process
    Patent number: 5626718
    Abstract: The present invention is directed to a method for increasing the retention on a washing/thickening device in an aqueous papermaking system. The method generally comprises adding to the furnish solids of the system an effective amount of a cationic polyacrylamide polymer.
    Type: Grant
    Filed: September 16, 1994
    Date of Patent: May 6, 1997
    Assignee: Betz Laboratories, Inc.
    Inventors: Irenee J. Philippe, Frank J. Sutman, Thomas E. Taggart, Mary B. K. Letscher, Michael A. Schuster, John C. Harrington, IV