ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,535,836, issued on Jan. 27.

"Method for operating a filling system and filling system" was invented by Dirk Kuschnerus (Krefeld, Germany), Sven Walbrecker (Wesel, Germany), Hansjorg Mucke (Monchengladbach, Germany) and Martin Krawczyk-Becker (Herne, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for operating a filling system includes: determining a current valve curve of a first filling valve and a current valve curve of a second filling valve; comparing the current valve curve of the first filling valve with a reference valve curve of the first filling valve and comparing the current valve curve of the second filling valve with a refe...