ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,702,942, issued on Aug. 11, was assigned to NxtNano LLC (Lenexa, Kan.).
"Biodegradable filters" was invented by Phillip Ross Burkholder (Tulsa, Okla.), Andrew Albert Lander McDowell (Bucyrus, Kan.) and Alan Smithies (Overland Park, Kan.).
According to the abstract* released by the U.S. Patent & Trademark Office: "In order to address the sustainability and environmental issues associated with conventional HVAC filters, inventive HVAC filters have been developed that are completely biodegradable and compostable and exhibit Minimum Efficiency Reporting Value (MERV) ratings that are superior to conventional HVAC filters. More particularly, it has been discovered that biodegradable electr...