公开(公告)号：US20210086133A1

公开(公告)日：2021-03-25

申请号：US16959896

申请日：2019-11-08

Applicant: CATALER CORPORATION

Inventor： Yuki KIDO ,  Suguru MATSUI ,  Etsuko OHARA ,  Kazuma NAKADA

IPC: B01D53/94 ,  B01J37/02 ,  B05D7/24

Abstract: A production method of an exhaust gas purification device includes the steps of supplying a solution containing a catalyst metal from a shower nozzle to an upper part of a honeycomb substrate, coating the honeycomb substrate with the solution, and firing the honeycomb substrate coated with the solution, wherein the shower nozzle has a plurality of discharge openings for discharging the solution and a guard which surrounds the plurality of discharge openings.