Patents by Inventor Gilbert L. Hale

Gilbert L. Hale 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).

  • Integrated coal cleaning process
    Patent number: 4566394
    Abstract: An integrated method of removing alkali metal compounds from sulfur-bearing coal is disclosed. The coal is comminuted (4) and mixed (10) with water (8) to form a slurry (12). In the preferred embodiment, the slurry (12) is comingled with an SO.sub.2 -bearing gas (16) in a transport pipeline (52) to form an acidic slurry which dissolves the alkali compounds out of the coal. The slurry is then separated (22) into a solid portion (24) and a liquid portion (26), the solid portion (24) being combusted (34) to form the SO.sub.2 -bearing gas (16).
    Type: Grant
    Filed: June 3, 1985
    Date of Patent: January 28, 1986
    Assignee: Combustion Engineering, Inc.
    Inventors: Donald C. Borio, Richard W. Borio, Gilbert L. Hale, Arun K. Mehta, Arnold L. Tyler
  • Integrated coal cleaning process
    Patent number: 4552077
    Abstract: An integrated method of removing alkali metal compounds from sulfur-bearing coal is disclosed. The coal is comminuted (4) and mixed (10) with water (8) to form a slurry (12). In the preferred embodiment, the slurry (12) is comingled with an SO.sub.2 -bearing gas (16) in a transport pipeline (52) to form an acidic slurry which dissolves the alkali compounds out of the coal. The slurry is then separated (22) into a solid portion (24) and a liquid portion (26), the solid portion (24) being combusted (34) to form the SO.sub.2 -bearing gas (16).
    Type: Grant
    Filed: June 27, 1984
    Date of Patent: November 12, 1985
    Assignee: Combustion Engineering, Inc.
    Inventors: Donald C. Borio, Richard W. Borio, Gilbert L. Hale, Arun K. Mehta, Arnold L. Tyler