ALEXANDRIA, Va., March 17 -- United States Patent no. 12,577,162, issued on March 17, was assigned to Knauf Gips KG (Iphofen, Germany).

"Construction material based on a mineral binder comprising synergistically effective hydrophobisation agent combinations" was invented by Jakub Gajski (Belchatow, Poland), Agnieszka Bogobowicz (Aleksandrow, Poland) and Katarzyna Foltynska (Rusiec, Poland).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention concerns construction materials based on a mineral binder, which include a synergistically effective hydrophobisation mixture. The invention also relates to methods for processing of such construction materials and the use of a synergistically effective mixture fo...