Patents by Inventor Robert K. Ballantine

Robert K. Ballantine 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).

  • Flooring unit
    Patent number: 4329939
    Abstract: A flooring unit for hog barns and the like is disclosed. The unit is a one-piece structural foam moulding having a tread surface formed with longitudinal rows of slots for permitting animal droppings and the like to pass through the unit. The unit is reinforced at its underside by a plurality of longitudinal and transverse reinforcing webs.
    Type: Grant
    Filed: June 30, 1980
    Date of Patent: May 18, 1982
    Assignee: BCM Manufacturing Ltd.
    Inventors: Thomas D. Christie, Robert K. Ballantine, Pierre A. Moreau
  • Flooring unit
    Patent number: D273998
    Type: Grant
    Filed: February 12, 1982
    Date of Patent: May 22, 1984
    Assignee: BCM Manufacturing Ltd.
    Inventor: Robert K. Ballantine