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:
Jul. 17, 2018
Filed:
Mar. 18, 2016
Applicant:
Ngk Insulators, Ltd., Nagoya, JP;
Inventors:
Assignee:
NGK Insulators, Ltd., Nagoya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/022 (2006.01); F01N 3/025 (2006.01); F01N 3/035 (2006.01); F01N 3/20 (2006.01); F01N 9/00 (2006.01);
U.S. Cl.
CPC ...
F01N 3/0222 (2013.01); F01N 3/025 (2013.01); F01N 3/035 (2013.01); F01N 3/2066 (2013.01); F01N 3/2073 (2013.01); F01N 9/00 (2013.01); F01N 2330/60 (2013.01); F01N 2510/06 (2013.01); F01N 2610/03 (2013.01); Y02T 10/47 (2013.01);
Abstract
An exhaust gas purification filter includes: a honeycomb structure body having partition walls for defining a plurality of cells that extend from an inflow end face to an outflow end face; an inflow side plugging portion; an outflow side plugging portion; and a porous surface trapping layer which is disposed on an inflow surface which is a surface on an inflow cell side which is the cell in which the outflow side plugging portion is disposed, among surfaces of the partition walls, in which the surface trapping layer has a thickness of 10 to 60 μm and an average pore diameter of 0.3 to 5 μm, and in a section which is parallel to a cell extending direction.