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:
Jan. 21, 2020
Filed:
Mar. 23, 2017
Ngk Insulators, Ltd., Nagoya, JP;
Ayaka Sakai, Nagoya, JP;
Satoshi Sakashita, Yokkaichi, JP;
Shingo Sokawa, Anjyo, JP;
Yuichi Tajima, Nagoya, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
In a porous body, a surface layer thickness Ts takes a relatively small value satisfying P≥0.54 Ts (formula (1)), the surface layer thickness Ts being derived by a microstructure analysis using the porous-body data that is prepared through three-dimensional scanning of a region including a surface (inflow plane) of the porous body. Here, P denotes a porosity [%] of the porous body, and 0%<P<100% and 0 μm<Ts are assumed. The surface layer thickness Ts is derived as a distance in a thickness direction (X direction) between a surface-layer region start planein which a straight-pore opening ratio becomes 98% or less for the first time and a surface-layer region end planein which the straight-pore opening ratio becomes 1% or less for the first time.