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:
Sep. 27, 2022
Filed:
Oct. 30, 2019
Cataler Corporation, Shizuoka, JP;
Ryota Onoe, Shizuoka, JP;
Ryo Tasaki, Shizuoka, JP;
Momoko Iwai, Shizuoka, JP;
Yamato Matsushita, Shizuoka, JP;
CATALER CORPORATION, Shizuoka, JP;
Abstract
Provided is a particulate filter in which a PM collection rate is stably increased. The particulate filter according to the present invention includes a substratehaving a wall flow structure having a porous partition wallthat partitions an inlet cell and an outlet cell, and a wash coat layer held on surfaces of internal pores of the partition wall. In addition, average filling rates A, B, and C of the wash coat layer measured for each predetermined pore diameter range in the internal pores satisfy specific relationships. Further, the wash coat layer is formed in a region that occupies 50% or more of a thickness of the partition wall, and an amount of a noble metal catalyst carried by the wash coat layer is 0 g/L or more but 0.2 g/L or less.