ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,491,475, issued on Dec. 9, was assigned to BTW Holding GmbH (Mondsee, Austria).
"Installation system comprising a wastewater line" was invented by Jurgen Johann (Mondsee, Austria) and Katharina Weitgasser (Wals, Austria).
According to the abstract* released by the U.S. Patent & Trademark Office: "A germ barrier is provided in the concentrate/wastewater drain from a water installation system towards the wastewater sewer in order to prevent backward contamination with germs, using a UV lamp or a chemical germ barrier that contains an alkaline material, in particular a material selected from the group consisting of carbonates, oxides, and peroxides, and combinations thereof."
The patent...