ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,509,386, issued on Dec. 30, was assigned to HERAEUS QUARZGLAS GMBH & Co. KG (Hanau, Germany).

"Method of manufacturing a preform of an antiresonant hollow core fibre" was invented by Manuel Rosenberger (Kleinostheim, Germany), Yusuf Tansel (Kleinostheim, Germany), Enrico Ehrentraut (Hanau, Germany) and Benjamin Reis (Kleinostheim, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for producing a preform of an anti-resonant hollow-core fiber, which has a hollow core extending along a fiber longitudinal axis, and a cladding region surrounding the hollow core and includes at least one anti-resonance element. The method includes (a) providing ...