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:
Jun. 29, 2021
Filed:
May. 18, 2018
Applicant:
Ngk Insulators, Ltd., Nagoya, JP;
Inventors:
Assignee:
NGK Insulators, Ltd., Nagoya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B 35/195 (2006.01); C04B 38/00 (2006.01); B28B 5/00 (2006.01); B28B 11/24 (2006.01); G06F 30/20 (2020.01); C04B 35/636 (2006.01); B01D 46/24 (2006.01); C04B 28/24 (2006.01); C04B 111/00 (2006.01);
U.S. Cl.
CPC ...
G06F 30/20 (2020.01); B01D 46/2451 (2013.01); B28B 11/243 (2013.01); C04B 28/24 (2013.01); C04B 35/195 (2013.01); C04B 35/6365 (2013.01); C04B 38/0006 (2013.01); B01D 2046/2496 (2013.01); C04B 2111/0081 (2013.01); C04B 2111/00793 (2013.01); C04B 2235/3217 (2013.01); C04B 2235/3225 (2013.01); C04B 2235/3229 (2013.01); C04B 2235/3244 (2013.01); C04B 2235/349 (2013.01); C04B 2235/5436 (2013.01); C04B 2235/606 (2013.01); C04B 2235/6021 (2013.01);
Abstract
A method for producing a porous body, comprising a raw-material mixing step of mixing talc having an average particle size of 1 μm or more and 18 μm or less, alumina, an auxiliary raw material containing a material that undergoes a eutectic reaction with talc and being prepared in an amount so as to satisfy a weight ratio of 0.5% or more and 1.5% or less by weight relative to the talc, and a pore-forming agent, to provide green body, and a molding and firing step of molding the green body to provide a compact and firing this compact at a firing temperature of 1350° C. to 1440° C.