The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 14, 2025
Filed:
Nov. 25, 2020
Korea Research Institute of Chemical Technology, Daejeon, KR;
Iljeong Heo, Daejeon, KR;
Young Woo You, Daejeon, KR;
Yun Ho Jeong, Daejeon, KR;
Ji Hoon Park, Daejeon, KR;
Jin Hee Lee, Daejeon, KR;
Soo Min Kim, Daejeon, KR;
Tae Sun Chang, Daejeon, KR;
KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY, Daejeon, KR;
Abstract
An object of the present invention is to increase the reduction performance of nitrogen oxides compared to existing three-way catalysts; simultaneously inhibit the emission of ammonia and nitrous oxide; simplify a process by means of a method of further doping an iridium-ruthenium catalyst into a commercial three-way catalyst; and expand the scope of application. The present invention provides a catalyst for simultaneously inhibiting the emission of ammonia and nitrous oxide by doping an iridium-ruthenium catalyst component into a three-way catalyst (TWC), a diesel oxidation catalyst, or a lean NOx trap supported on a honeycomb support.