US Patent Issued to Proventia on July 1 for "Counter-flow reactant mixing for exhaust gas aftertreatment" (Finnish Inventors)

ALEXANDRIA, Va., July 3 -- United States Patent no. 12,343,692, issued on July 1, was assigned to Proventia Oy (Oulunsalo, Finland).

"Counter-flow reactant mixing for exhaust gas aftertreatment" was invented by Eero Kotimaki (Oulunsalo, Finland), Jukka Kurikka (Oulunsalo, Finland), Aki Karna (Oulunsalo, Finland) and Tuomas Tyni (Oulunsalo, Finland).

According to the abstract* released by the U.S. Patent & Trademark Office: "A mixer and a method therein, including feeding a rotating flow of exhaust gas in a mixing pipe towards a turning end of a mixing chamber; dosing reactant by a doser against the rotating flow around a centreline of the mixing pipe; maintaining a guide around the doser such that a front face of the guide faces the rotat...