Patents Assigned to Brown Coal Corporation
  • Coal treatment method and product produced therefrom
    Patent number: 4543104
    Abstract: Disclosed herein is a method for treating raw coal with ozone in aqueous suspension to modify the surface of the coal particle and release the ash constituents thereby permitting a more thorough separation of coal from ash by conventional means. The process also provides a mixture which is easily dewatered.
    Type: Grant
    Filed: October 30, 1984
    Date of Patent: September 24, 1985
    Assignee: Brown Coal Corporation
    Inventors: George E. Brown, Jr., Bruce N. Hoppert