ALEXANDRIA, Va., April 21 -- United States Patent no. 12,605,691, issued on April 21, was assigned to Carbon Technology Holdings LLC (Oakdale, Minn.).
"Carbon micro-plant" was invented by James A. Mennell (Dellwood, Minn.), Daniel J. Despen (Oakdale, Minn.) and David Reamer (Oakdale, Minn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides biorefining systems for co-producing activated carbon along with primary products. A host plant converts a feedstock comprising biomass into primary products and carbon-containing co-products; a modular reactor system pyrolyzes and activates the co-products, to generate activated carbon and pyrolysis off-gas; and an oxidation unit oxidizes the p...