ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,698,602, issued on Aug. 4, was assigned to Wilhelm Schutz GmbH & Co. KG (Weilburg-Gaudernbach, Germany).
"Multi-layer traffic superstructure with liquid-tight intermediate layer, method of manufacturing the multi-layer traffic superstructure" was invented by Maximilian Schutz (Darmstadt, Germany) and Ottmar Wilhelm Schutz (Weilburg, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A superstructure for a traffic surface is provided, the superstructure including a base layer of a mastic asphalt, and an intermediate layer of a porous asphalt arranged on the base layer, wherein the base layer seals a lower side of the intermediate layer at least in a l...