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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.:

US 11731111 B1

PDFFull Text
Date of Patent:
Aug. 22, 2023

Filed:

Mar. 15, 2021

Porous ceramic structure and method of producing porous ceramic structure

Applicant:

Ngk Insulators, Ltd., Nagoya, JP;

Inventors:

Yunie Izumi, Nisshin, JP;

Kennichi Hidaka, Nagoya, JP;

Akihiro Miura, Nagoya, JP;

Assignee:

NGK INSULATORS, LTD., Nagoya, JP;

Attorney:

Burr Patent Law, PLLC

Primary Examiner:

Patricia L Hailey

Int. Cl.
CPC ...
B01J 23/889 (2006.01); B01J 23/10 (2006.01); B01J 23/75 (2006.01); B01J 23/00 (2006.01); B01J 35/04 (2006.01); B01J 35/00 (2006.01); B01J 35/02 (2006.01); B01J 37/04 (2006.01); B01J 37/00 (2006.01); B01J 37/08 (2006.01); B01D 53/94 (2006.01); F01N 3/022 (2006.01); B01J 21/04 (2006.01);
U.S. Cl.
CPC ...
B01J 23/8892 (2013.01); B01D 53/94 (2013.01); B01J 21/04 (2013.01); B01J 23/005 (2013.01); B01J 23/10 (2013.01); B01J 23/75 (2013.01); B01J 35/0013 (2013.01); B01J 35/026 (2013.01); B01J 35/04 (2013.01); B01J 37/0009 (2013.01); B01J 37/04 (2013.01); B01J 37/088 (2013.01); F01N 3/022 (2013.01); B01D 2255/2065 (2013.01); B01D 2255/2073 (2013.01); B01D 2255/20738 (2013.01); B01D 2255/20746 (2013.01); B01D 2255/20792 (2013.01); B01D 2255/405 (2013.01); B01D 2255/9155 (2013.01); B01D 2255/9202 (2013.01); F01N 2330/06 (2013.01);
Abstract

When the porous ceramic structure contains Co together with Fe or Mn, the Co content is higher than or equal to 0.1 mass % and lower than or equal to 3.0 mass % in terms of CoO, and when the porous ceramic structure contains Co without containing Fe and Mn, the Co content is higher than or equal to 0.2 mass % and lower than or equal to 6.0 mass % in terms of CoO. The Ce content is higher than or equal to 0.1 mass % and lower than or equal to 10 mass % in terms of CeO. The Fe/Mn/Co ratio is higher than or equal to 0.8 and lower than or equal to 9.5. The porous ceramic structure contains more than or equal to 0.03 percent and less than or equal to 2.5 percent by mass of Zn in terms of ZnO.

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