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:
Feb. 01, 2022
Filed:
Feb. 23, 2018
Cataler Corporation, Kakegawa, JP;
Yuki Tanaka, Kakegawa, JP;
Shoko Fukuyo, Kakegawa, JP;
Kazuma Nakada, Kakegawa, JP;
Eiichi Yasutomi, Kakegawa, JP;
Ryo Nishimura, Kakegawa, JP;
CATALER CORPORATION, Kakegawa, JP;
Abstract
The purpose of the present invention is to provide a manufacturing method for an exhaust gas purification device that can uniformly coat a honeycomb substrate with slurry even when using a low viscosity slurry. The present invention pertains to a manufacturing method for an exhaust gas purification device that includes providing a slurry for catalyst layer formation from a shower nozzle onto a honeycomb substrate, coating the honeycomb substrate with the slurry, and firing the honeycomb substrate coated with the slurry, wherein the viscosity of the slurry at a shear rate of 4 sis 800 mPA·s or less, the shower nozzle has a plurality of discharge openings for discharging the slurry, the relationship of the spacing a) of the discharge openings and the diameter b) of the liquid drops formed when starting supply of the slurry is 0.85<a/b, and the equivalent diameter c) of a slurry face when starting supply of the slurry and the slurry has spread on the honeycomb substrate is greater than or equal to the spacing a) of the discharge openings.