ALEXANDRIA, Va., June 25 -- United States Patent no. 12,338,147, issued on June 24, was assigned to HASKONINGDHV NEDERLAND B.V. (Amersfoort, Netherlands).
"Digestion of organic sludge" was invented by Antonius Theodorus Wilhelminus Maria Hendriks (Amersfoort, Netherlands) and Eddie Koornneef (Amersfoort, Netherlands).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention is in the field of organic sludge digestion from various sources, such as manure, sludge from a wastewater treatment plant, and an organic fraction of dredging sludge. The present method provides advanced control for serially treating aqueous organic sludge by anaerobic digestion. It further relates to dewatering of the obtained biomass...