Patents by Inventor Robert J. Leahy

Robert J. Leahy 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).

  • Method of minimizing untoward effect of contaminants, such as pitch, in the papermaking operation
    Patent number: 4608123
    Abstract: Disclosed is a method of minimizing the untoward effect of contaminants, such as pitch and related materials, in the papermaking operation. An aqueous dispersion of water-dispersible synthetic pulp, such as polypolyolefin pulp, is added to a pulp slurry comprised of cellulosic pulp, at a point prior to sheet formation. The synthetic pulp adsorbs a substantial amount of the pitch present in the pump slurry and prevents it from depositing on the papermaking apparatus.
    Type: Grant
    Filed: February 20, 1985
    Date of Patent: August 26, 1986
    Assignee: Hercules Incorporated
    Inventor: Robert J. Leahy
  • Display rack for carpet samples
    Patent number: D252729
    Type: Grant
    Filed: October 20, 1977
    Date of Patent: August 28, 1979
    Assignee: Milliken Research Corporation
    Inventor: Robert J. Leahy, Jr.