US Patent Issued to HERAEUS QUARZGLAS on Aug. 5 for "Methods for producing a hollow-core fiber and for producing a preform for a hollow-core fiber" (German Inventors)

ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,378,150, issued on Aug. 5, was assigned to HERAEUS QUARZGLAS GMBH & Co. KG (Hanau, Germany).

"Methods for producing a hollow-core fiber and for producing a preform for a hollow-core fiber" was invented by Manuel Rosenberger (Hanau, Germany) and Ralph Sattmann (Hanau, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A high degree of precision and an exact positioning of anti-resonant elements in a sufficiently stable and reproducible manner is achieved in that a step of providing a cladding tube includes a processing measure, in which the cladding tube wall is machined with a longitudinal structure extending in the direction of the cladding tube lon...