ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,522,560, issued on Jan. 13, was assigned to SPECIALTY OPERATIONS FRANCE (Lyons, France).

"Quaternary ammonium compounds" was invented by Olivier Back (Lyons, France) and Sergio Mastroianni (Lyons, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention concerns new quaternary ammonium compounds with surfactant properties and improved biodegradability."

The patent was filed on June 16, 2020, under Application No. 17/618,107.

*For further information, including images, charts and tables, please visit: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&co1=AND&d=PTXT&s1=12...