ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,540,865, issued on Feb. 3, was assigned to ADVA Optical Networking SE (Meiningen, Germany).

"Apparatus for determining the temperature of at least one fluid" was invented by Michael Eiselt (Kirchheim, Germany), Florian Azendorf (Meiningen, Germany) and Sander Jansen (Germering, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is an apparatus for determining the temperature of at least one fluid. The apparatus includes an optical fiber. A first end of the optical fiber is connected to at least one fiber tip, and a first additional reflector is introduced into the at least one fiber tip at a first predetermined distance from an outer end of ...