ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,540,526, issued on Feb. 3, was assigned to Robertson Intellectual Properties LLC (Mansfield, Texas).

"Degradable plug device for a pipe" was invented by Michael C. Robertson (Arlington, Texas) and Douglas J. Streibich (Arlington, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A degradable plug device for a pipe prevents fluid flow through the pipe until the plug device has been removed from the pipe. The plug device includes a body which is at least partially of a degradable material. The exposed surfaces of the degradable plug include a protective layer thereon. The body includes a chamber therein. The body is disposable in the pipe to prevent flu...