ALEXANDRIA, Va., July 14 -- United States Patent no. 12,681,157, issued on July 14, was assigned to Lambda:4 Entwicklungen GmbH (Hamburg, Germany).

"Method for one-sided radio-based distance measurement" was invented by Ronne Reimann (Hamburg, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for one-sided radio-based distance measurement. The object is to speed up the determination of the distance between a first object and a second object, to enable greater accuracy and/or to enable or improve the determination, even in the event of interference, particularly in the case of one-sided and/or asymmetric interference in the radio connection. The method is carried out largely without radio signal...