Patents by Inventor Luis E. Arri

Luis E. Arri 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).

  • Combination air-blown and oxygen-blown underground coal gasification process
    Patent number: 4662443
    Abstract: Use of an air-blown underground coal gasification plant to produce low-Btu gas thereby providing boiler fuel needed for an oxygen-blown underground coal gasification plant. The product from the oxygen-blown plant can be used for the production of synthetic natural gas or other uses. A preferred production gasification is also shown.
    Type: Grant
    Filed: December 5, 1985
    Date of Patent: May 5, 1987
    Assignee: Amoco Corporation
    Inventors: Rajen Puri, Luis E. Arri, Bruce W. Gash
  • Method of producing synthesis gas by underground gasification of coal using specific well configuration
    Patent number: 4648450
    Abstract: Underground coal gasification process containing a novel system of injection and production wells. Specifically, the injection well is positioned at an angle with respect to horizontal of less than the angle of repose of loose coal and char for the particular coal seam, and the production well is positioned at an angle with respect to horizontal of greater than the angle of repose but less than 90.degree.. This system protects the injection well during the process and places the production well in a position for maximum production while relieving it of certain tensile and shear stresses.
    Type: Grant
    Filed: November 27, 1985
    Date of Patent: March 10, 1987
    Assignee: Amoco Corporation
    Inventors: Bruce W. Gash, Luis E. Arri, Elton B. Hunt, Jr., David R. Parrish