 PITTSBURGH, Aug. 26, 2021 GLOBE NEWSWIRE -- Montauk Renewables, Inc. Montauk or the Company NASDAQ: MNTK, a renewable energy company specializing in the management, recovery and conversion of biogas into renewable natural gas RNG, today announced the Company has been awarded patent number US11,097,245, issued by the U.S. Patent Trademark Office USPTO, covering 24 unique elements of its Electric-Powered, Closed-Loop, Continuous-Feed, Endothermic Energy-Conversion Systems and Methods the System. 