Patents by Inventor Henry M. Nugent

Henry M. Nugent 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).

  • Additives for increased retention and pitch control in paper manufacture
    Patent number: 4313790
    Abstract: A process is disclosed for the production of paper and paper-like products which consists of the addition to the papermaking furnish of kraft lignin or modified kraft lignin and poly(oxyethylene).
    Type: Grant
    Filed: March 31, 1980
    Date of Patent: February 2, 1982
    Assignee: Pulp and Paper Research Institute of Canada
    Inventors: Robert H. Pelton, Lawrence H. Allen, Henry M. Nugent