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. 18, 2017
Filed:
May. 22, 2014
Applicant:
Mitsui Mining & Smelting Co., Ltd., Tokyo, JP;
Inventors:
Ataru Daido, Saitama, JP;
Takahiro Kogawa, Saitama, JP;
Assignee:
Mitsui Mining & Smelting Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01N 3/035 (2006.01); B01D 53/94 (2006.01); B01J 23/50 (2006.01); B01J 35/04 (2006.01); F01N 3/022 (2006.01); B01J 37/02 (2006.01); B01D 46/24 (2006.01); B01J 23/42 (2006.01); B01J 23/44 (2006.01); B01J 23/46 (2006.01);
U.S. Cl.
CPC ...
F01N 3/035 (2013.01); B01D 46/2418 (2013.01); B01D 53/94 (2013.01); B01D 53/944 (2013.01); B01J 23/50 (2013.01); B01J 35/04 (2013.01); B01J 37/0248 (2013.01); F01N 3/0222 (2013.01); B01D 2255/104 (2013.01); B01D 2255/1021 (2013.01); B01D 2255/1023 (2013.01); B01D 2255/1025 (2013.01); B01D 2255/9155 (2013.01); B01D 2258/012 (2013.01); B01J 23/42 (2013.01); B01J 23/44 (2013.01); B01J 23/464 (2013.01);
Abstract
Provided is a novel DPF which can prevent PM from accumulating on the surface and interior of a filter substrate, and can suppress an increase in back pressure caused by exhaust gas. The DPF has a configuration in which an inorganic porous layer, which includes a metal oxide or a metal composite oxide and provided with surface irregularities having a thickness of at least 50% of the thickness of the inorganic porous layer, is formed on part or all of the surface of the dividing wall on the side where exhaust gas flows in.