ALEXANDRIA, Va., July 15 -- United States Patent no. 12,661,607, issued on June 23, was assigned to HYDAC FILTERTECHNIK GMBH (Sulzbach/Saar, Germany).
"Filter device" was invented by Alexander Nenno (Marpingen, Germany), Andre Michael Schneider (Saarbrucken, Germany), Klaus Morgens (Trier, Germany) and Marco Tassone (Saarbrucken-Eschberg, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a filter device at least consisting of two coaxially arranged filter elements (12, 14) which delimit a cavity (16) between them, characterised in that the inner side (18) of the outer filter element (14), which faces the cavity (16), has at least in some parts a separating arrangement (20) for g...