ALEXANDRIA, Va., June 10 -- United States Patent no. 12,291,928, issued on May 6, was assigned to Saudi Arabian Oil Co. (Dhahran, Saudi Arabia).
"Threaded and coupled connection" was invented by Oladele Owoeye (Dhahran, Saudi Arabia) and Jasem Moyaibed (Tarut, Saudi Arabia).
According to the abstract* released by the U.S. Patent & Trademark Office: "A pipe assembly includes a first pipe, a second pipe, and a collar. The first pipe has a first external thread and a first annular lip that has a first external seal surface and a first internal annular beveled surface. The second pipe has a second external thread and a second annular lip with a second external seal surface and a second internal annular beveled surface. The collar is threadedl...