Patents by Inventor Warren W. Pruess

Warren W. Pruess 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).

  • Preparation of vinyl ester resin polymer spheres
    Patent number: 4348309
    Abstract: Spheres of cured vinyl ester resin of a size useful as a flattening agent in paper coating compositions are prepared by a process of adding an aqueous phase containing polyvinyl alcohol to a stirred vinyl ester resin phase containing a free-radical catalyst to form a resin-in-water dispersion followed by addition of a promoter and the resin allowed to cure.
    Type: Grant
    Filed: October 9, 1980
    Date of Patent: September 7, 1982
    Assignee: The Dow Chemical Company
    Inventor: Warren W. Pruess