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:
Feb. 10, 2009
Filed:
Jul. 23, 2004
Masahiro Furukawa, Nagoya, JP;
Nobuyuki Tanahashi, Nagoya, JP;
Yuuichirou Tabuchi, State College, PA (US);
Shinji Kawasaki, Nagoya, JP;
Masahiro Furukawa, Nagoya, JP;
Nobuyuki Tanahashi, Nagoya, JP;
Yuuichirou Tabuchi, State College, PA (US);
Shinji Kawasaki, Nagoya, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
A ceramic porous body is provided, inclusing a plurality of pores formed in a ceramic substrate at a specified porosity. A pore part is discriminated from a non-pore part by binarizing a cross-sectional plane image of the substrate by image analysis. When a center line passing the central part of the pore part is drawn, the porosity (ε (%)), a mean width (D(μm)) of the pore part represented by a mean value of a distance, between outlines specifying the pore part, perpendicular to the center line, a mean length (L (μm)) of the pore part represented by a mean value of a length of the center line between adjacent branch points and a length of the center line between an end of the center line and the branch point, and a mean pore size (D(μm)) satisfy a specified relationship.