ALEXANDRIA, Va., May 5 -- United States Patent no. 12,618,352, issued on May 5, was assigned to TOYOTA JIDOSHA K.K. (Toyota, Japan).
"Exhaust purification apparatus" was invented by Hiroshi Oyagi (Kyoto, Japan), Hirokazu Ito (Shizuoka-ken, Japan) and Kazuhiko Seguchi (Shizuoka-ken, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An exhaust purification apparatus includes a connection portion that connects an exhaust manifold to a catalytic converter. The connection portion includes a diffusion portion and a coupling portion. The coupling portion is configured such that a cross-sectional area of a passage of the coupling portion increases from a connection point with the diffusion portion toward a connec...