ALEXANDRIA, Va., July 16 -- United States Patent no. 12,359,531, issued on July 15, was assigned to Flowco MasterCo LLC (Houston).

"Choke mechanism for a lubricator" was invented by Garrett S. Boyd (Granbury, Texas) and Darrell Mitchum (Oakhurst, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A lubricator and plunger catcher used in conjunction with an oil or gas well includes a manifold positioned between the wellhead and the plunger catcher. The manifold includes a plunger passageway that extends from the bottom of the manifold to the top of the manifold, with the plunger catcher being mounted to the top of the manifold. The manifold also includes a production passageway through which oil or gas leav...