ALEXANDRIA, Va., June 5 -- United States Patent no. 12,276,574, issued on April 15, was assigned to Quest Integrity USA LLC (Stafford, Texas).

"Gel pigging improvement" was invented by Ron Maurier (Stafford, Texas) and Robert De Lorenzo (Seattle).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for performing ultrasonic inspection to a pipe is described, comprising: introducing an in-line inspection tool assembly into a pipe, wherein the in-line inspection tool assembly comprises a gel reservoir and an ultrasonic inspection tool flanked by a pair of batching pigs, wherein the gel reservoir holds a first gel couplant; and driving the in-line inspection tool assembly along the pipe while performing ultra...