ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,442,150, issued on Oct. 14, was assigned to BAUER Spezialtiefbau GmbH (Schrobenhausen, Germany).
"Drilling tool and method for creating a bore in the ground" was invented by Matthias Mayinger (Rennertshofen, Germany) and Andreas Stimpfle-Ziegler (Kuhbach, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a drilling tool for creating a bore in the ground, having a tubular drill shank, at least one removal device which is configured to remove ground material, a supply device for supplying a fluid through the drill shank through at least one outlet opening for the fluid into the bore and at least one mixing element which exten...