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. 07, 2018
Filed:
Mar. 15, 2016
Ngk Insulators, Ltd., Nagoya, JP;
Yoshio Kikuchi, Nagoya, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
A plugged honeycomb structure includes: a pillar-shaped honeycomb substrate having a partition wall base material that defines a plurality of cells serving as a through channel of fluid; a plugging portion disposed at open ends of predetermined cells at an inflow-side end face of fluid and at open ends of residual cells at an outflow-side end face of fluid; and a porous trapping layer disposed at least at a surface of the partition wall base material of the residual cells. The partition wall base material is formed by a base material porous body including cordierite as a main phase, the trapping layer is formed by a trapping layer porous body including cordierite as a main phase, and a part of the trapping layer penetrating into pores formed at the partition wall base material has a thickness of 0 to 20 μm.