ALEXANDRIA, Va., June 12 -- United States Patent no. 12,297,398, issued on May 13, was assigned to Carbon Technology Holdings LLC (Oakdale, Minn.).
"Methods and apparatus for enhancing the energy content of carbonaceous materials from pyrolysis" was invented by James A Mennell (Brighton, Utah) and Daniel J. Despen (Oakdale, Minn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Processes and systems for converting biomass into high-carbon biogenic reagents that are suitable for a variety of commercial applications. Pyrolysis in the presence of an inert gas is employed to generate hot pyrolyzed solids, condensable vapors, and non-condensable gases, followed by separation of vapors and gases, and cooling of the ...