ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,557,809, issued on Feb. 24.
"Wood preservatives" was invented by Selvanathan Arumugam (Blue Bell, Pa.), David A. Laganella (Swedesboro, N.J.) and Randall W. Stephens (Collegeville, Pa.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A wood preservative composition and method for preserving wood by contacting wood with said composition comprising a polyurethane polymer, non-aqueous solvents, and a wood preservative active."
The patent was filed on Sept. 24, 2019, under Application No. 17/280,979.
*For further information, including images, charts and tables, please visit: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtm...