ALEXANDRIA, Va., March 12 -- United States Patent no. 12,247,680, issued on March 11, was assigned to VALLOUREC OIL AND GAS FRANCE (Aulnoye-Aymeries, France).

"Metal tubular connecting part and method for obtaining such a part by additive manufacturing" was invented by Bertrand Maillon (Meudon, France), Alexandre Noel (Meudon, France), Thierry Taisne (Meudon, France) and Umberto Caruso (Meudon, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "A metal tubular connecting part includes a total axial length, an inner surface, and an outer surface. The inner and outer surfaces delimit a wall, an outer transition surface, and an inner transition surface. The outer transition surface and the inner transition s...