ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,521,699, issued on Jan. 13, was assigned to Cataler Corp. (Kakegawa, Japan).
"Exhaust purification catalyst" was invented by Kohei Takasaki (Kakegawa, Japan), Tatsuya Ohashi (Kakegawa, Japan) and Keiichi Narita (Kakegawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides an exhaust gas purification catalyst in which platinum group metal migration from a catalyst layer to a base material during high temperature duration is suppressed. The exhaust gas purification catalyst disclosed herein includes a base material, a catalyst layer, and an intermediate layer arranged between the base material and the catalyst layer. The b...