ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,421,885, issued on Sept. 23, was assigned to Proventia Oy (Oulunsalo, Finland).
"Exhaust gas aftertreatment mixer" was invented by Eero Kotimaki (Oulunsalo, Finland) and Aki Karna (Oulunsalo, Finland).
According to the abstract* released by the U.S. Patent & Trademark Office: "A flow guide and a method therein, including dividing by a divider a mixing chamber to input and output sides; supporting a mixing tube in the mixing chamber, receiving exhaust gas by an intake section from the input side; guiding the received exhaust gas by a swirl guide to flow inside the mixing tube towards the second end as a rotating and advancing main flow; mounting a reactant doser by a reactant doser m...