MUMBAI, India, Oct. 11 -- Intellectual Property India has published a patent application (202527090446 A) filed by Cataler Corporation, Shizuoka, Japan, on Sept. 22, for 'exhaust gas purifying catalyst.'
Inventor(s) include Takasu, Ryosuke; Onoe, Ryota; Ohashi, Tatsuya; Ito, Masaya; and Onohara, Yu.
The application for the patent was published on Oct. 10, under issue no. 41/2025.
According to the abstract released by the Intellectual Property India: "The present invention provides an exhaust gas purifying catalyst which has good NOx storage performance. Disclosed is an exhaust gas purifying catalyst which comprises a base material 10 and a catalyst layer 20. The catalyst layer 20 comprises a first layer 21 that contains Pd, a second layer 22 that contains a catalyst metal and an NOx storage material, and a third layer 23 that contains Rh. The second layer 22 has a second layer upstream side portion 22a that contains Pt and Pd, and a second layer downstream side portion 22b that contains Pt. If the ratio of the Pd content to the catalyst metal content in the second layer upstream side portion 22a is defined as the Pd content ratio A and the ratio of the Pd content to the catalyst metal content in the second layer downstream side portion 22b is defined as the Pd content ratio B, the Pd content A is less than 0.5 and the Pd content A is higher than the Pd content B."
The patent application was internationally filed on Jan. 31, 2024, under International application No.PCT/JP2024/003052.
Disclaimer: Curated by HT Syndication.
