ALEXANDRIA, Va., March 31 -- United States Patent no. 12,589,339, issued on March 31, was assigned to Hengst SE (Munster, Germany).
"Oil filter cartridge" was invented by Wilhelm Ardes (Ascheberg, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A filter cartridge configured to be removably inserted into a space of a filter housing that has a housing socket and a housing cover with a sealing surface facing inwards. The filter cartridge has a filter element forming a fluid channel with a longitudinal axis, a front end, and a rear end, as well as a connector element with a peripheral surface that provides for an increased filter area, if the peripheral surface includes a first ring surface and a second r...