Patents by Inventor Paul R. Rutter

Paul R. Rutter 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).

  • Coal dewatering
    Patent number: 4853133
    Abstract: The water content of wet small coal is reduced by adding a defined amount of an ionic surfactant, centrifuging, and adding a foam suppressing amount of a cationic organic compound to the aqueous effluent from the centrifugation step.
    Type: Grant
    Filed: December 10, 1987
    Date of Patent: August 1, 1989
    Assignee: The British Petroleum Company p.l.c.
    Inventors: Steven A. Flynn, Paul R. Rutter
  • Precipitation of asphaltene
    Patent number: 4846957
    Abstract: Asphaltenes are separated from hydrocarbon oil by bringing the oil into contact with formic acid or a water-soluble organic acid consisting of carbon, hydrogen and oxygen and having at least two functional groups.
    Type: Grant
    Filed: November 13, 1987
    Date of Patent: July 11, 1989
    Assignee: The British Petroleum Company p.l.c.
    Inventors: Graham R. Johnson, Paul R. Rutter
  • Solid fuel oil mixtures
    Patent number: 4484929
    Abstract: Fuel composition comprises (a) 15 to 60% be weight, preferably 40 to 55%, of a friable solid fuel, e.g. coal, (b) a stabilizing additive composition and (c) a fuel oil. The additive comprises the combination of a polymer containing functional groups, e.g., maleinized polybutadiene, and a surfactant. The composition is suitable for use as a liquid fuel for industrial burners.
    Type: Grant
    Filed: October 5, 1982
    Date of Patent: November 27, 1984
    Assignee: The British Petroleum Company p.l.c.
    Inventors: Paul R. Rutter, Christopher J. Veal