ALEXANDRIA, Va., July 14 -- United States Patent no. 12,680,418, issued on July 14, was assigned to FORUM US INC. (Houston).
"Stage collar and related methods for operation" was invented by Jeffery Morrison (Missouri City, Texas) and Tabitha Katelyn Fox (Houston).
According to the abstract* released by the U.S. Patent & Trademark Office: "A stage collar having a mandrel and a closing sleeve disposed in and releasably coupled to the mandrel. One or more ports of the closing sleeve align with one or more ports of the mandrel when the stage collar is in a run in position. An opening sleeve is disposed in and releasably coupled to the mandrel. A protection sleeve is disposed in and releasably coupled to the opening sleeve. The protection slee...