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:
Aug. 01, 2017
Filed:
Nov. 28, 2012
Hiroshi Otsuki, Gotenba, JP;
Hiromasa Nishioka, Susono, JP;
Yoshihisa Tsukamoto, Susono, JP;
Daichi Imai, Shizuoka-ken, JP;
Kazuhiro Itoh, Mishima, JP;
Ryota Koutake, Susono, JP;
Hiroshi Otsuki, Gotenba, JP;
Hiromasa Nishioka, Susono, JP;
Yoshihisa Tsukamoto, Susono, JP;
Daichi Imai, Shizuoka-ken, JP;
Kazuhiro Itoh, Mishima, JP;
Ryota Koutake, Susono, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-Shi, JP;
Abstract
An exhaust gas purification filter that is suitable for arrangement in an exhaust passage of an internal combustion engine and for collecting particulate matter contained in exhaust gas, comprises: exhaust gas inflow passages and exhaust gas outflow passages that are arranged alternately; and porous partitions that separate the exhaust gas inflow passages and the exhaust gas outflow passages from each other. Each of the partitions is divided into a coated zone in which a surface of a partition base is coated with a coating layer having a smaller average pore diameter than an average pore diameter of the partition base and a non-coated zone that is located on a downstream side of the coated zone and in which a surface of the partition base is not coated with the coating layer.