US Patent Issued to UPM-KYMMENE on July 28 for "Method and an apparatus for washing a crude lignin, a soluble carbohydrate containing fraction, a solid fraction and their use" (Finnish Inventors)

ALEXANDRIA, Va., July 28 -- United States Patent no. 12,692,285, issued on July 28, was assigned to UPM-KYMMENE Corp. (Helsinki).

"Method and an apparatus for washing a crude lignin, a soluble carbohydrate containing fraction, a solid fraction and their use" was invented by Sami Turunen (Lappeenranta, Finland) and Juha Tamper (Levanen, Finland).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a method and an apparatus for washing a crude lignin slurry (5) formed from plant based raw material, wherein the method comprises separating a soluble carbohydrate containing fraction (10) from the crude lignin slurry (5) by using displacement washing in at least one solid-liquid separation stage ...