. 7,809,526 was issued October 5, 2010 for "Apparatus for the Determination and Evaluation of Coal Chemistry Based on the Genetics of Fossil Fuels . This disclosure protects... five years; at the Boardman Coal Plant for 8 years; at Nebraska City for 7 years, etc. September 2009: Exergetic Systems Resolves Patent Litigation Exergetic Systems LLC is pleased... will present the "Use of the Oxy-Hydrocarbon Model of Fossil Fuels" at the Symposium on Western Fuels International Conference on Lignite, Brown, and Subbituminous Coals in Denver, CO...