ALEXANDRIA, Va., July 16 -- United States Patent no. 12,358,829, issued on July 15, was assigned to Draka Comteq France (Paron, France).

"Method for manufacturing a preform for a multi-core optical fiber and method for manufacturing multi-core optical fibers" was invented by Jean-Baptiste Trinel (Paron, France), Pierre Sillard (Paron, France), Alain Giuliani (Paron, France), Pierre Rebreyend (Paron, France) and Maryna Kudinova (Paron, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for manufacturing a preform for a multicore fiber, including stacking (S1) a plurality of core rods and a plurality of silica-based filler rods in a tube; collapsing (S2) the tube around the stack of core rods and s...