Patents by Inventor Bruce N. Hoppert

Bruce N. Hoppert 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 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