Patents by Inventor Pedro F. Ferre

Pedro F. Ferre 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).

  • Deinking formulation for flexographic inks
    Patent number: 5417807
    Abstract: The removal of hydrophilic flexographic inks from a pulp fiber slurry in a flotation or flotation/wash deinking system is accomplished by using a combination of (a) a fatty acid or salt thereof, (b) a rosin acid or salt thereof, and (c) a non-ionic or anionic surfactant along with water having a hardness of about 80 to 500 ppm Ca.sup.+2.
    Type: Grant
    Filed: May 27, 1993
    Date of Patent: May 23, 1995
    Assignees: KAO Corporation, High Point Chemical Corp.
    Inventors: Francisco F. Fossas, Pedro F. Ferre, Narciso R. Castano, Stephen P. Williams, Hideaki Urushibata