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. 04, 2022
Filed:
Mar. 19, 2019
Applicant:
Ngk Insulators, Ltd., Nagoya, JP;
Inventors:
Assignee:
NGK Insulators, Ltd., Nagoya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B 35/565 (2006.01); C04B 35/587 (2006.01); C04B 35/63 (2006.01); C04B 38/00 (2006.01); C04B 35/195 (2006.01);
U.S. Cl.
CPC ...
C04B 35/565 (2013.01); C04B 35/587 (2013.01); C04B 35/6316 (2013.01); C04B 38/0009 (2013.01); C04B 38/0058 (2013.01); C04B 35/195 (2013.01); C04B 2235/3206 (2013.01); C04B 2235/3217 (2013.01); C04B 2235/3481 (2013.01); C04B 2235/3826 (2013.01); C04B 2235/3873 (2013.01); C04B 2235/602 (2013.01); C04B 2235/663 (2013.01); C04B 2235/96 (2013.01); Y10T 428/24149 (2015.01);
Abstract
A porous material includes aggregate particles and a binding material. In the aggregate particles, oxide films containing cristobalite are provided on surfaces of particle bodies that are silicon carbide particles or silicon nitride particles. The binding material contains cordierite and binds the aggregate particles together in a state where pores are provided therein. The mass ratio of the cordierite to the whole of the porous material is in the range of 10 to 40 mass %. The oxide films that exist between the particle bodies and the binding material have a thickness less than or equal to 0.90 μm.