ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,398,037, issued on Aug. 26, was assigned to SIXRING INC. (Calgary, Canada).
"Modified sulfuric acid and uses thereof" was invented by Clay Purdy (Medicine Hat, Canada), Markus Weissenberger (Calgary, Canada), Markus Pagels (Calgary, Canada) and Kyle G Wynnyk (Calgary, Canada).
According to the abstract* released by the U.S. Patent & Trademark Office: "A one-pot process to separate lignin from a lignocellulosic feedstock, where the process involves the steps of: providing a vessel; providing the lignocellulosic feedstock; providing a composition that includes: an acid; a modifying agent including a compound containing an amine group; and a peroxide; exposing the lignocellulosic feedst...