ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,545,855, issued on Feb. 10, was assigned to MENNO CHEMIE-VERTRIEB GMBH (Norderstedt, Germany).
"Liquid acidic cleaning agent compositions for hard surfaces" was invented by Jan Nevermann (Hamburg, Germany) and Wolfgang Zerling (Kaltenkirchen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to the use of a carboxylic-acid-containing cleaning agent for removing stains of vegetable origin and/or for decontaminating surfaces contaminated by plant-protection agents. The agent comprises 20-60 wt. % of an aliphatic C1-C10 carboxylic acid, preferably formic acid, or a mixture of two or more of such aliphatic carboxylic acids...