ALEXANDRIA, Va., July 21 -- United States Patent no. 12,686,085, issued on July 21, was assigned to Poly Lining Systems Inc. (Plymouth, N.H.).

"System and method for repair of breach in exterior secondary containment wall of double wall underground storage tank without excavation" was invented by Anthony James Rieck (Colorado Springs, Colo.).

According to the abstract* released by the U.S. Patent & Trademark Office: "This invention provides a system and method for the repair of breaches in an exterior secondary containment wall of double wall underground storage tank, including accessing an interstitial space between the exterior secondary containment wall and an inner primary containment wall with a fluid source input assembly. A flowabl...