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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 9011757 B1

PDFFull Text
Date of Patent:
Apr. 21, 2015

Filed:

Mar. 18, 2013

Aluminum-titanate-based ceramic honeycomb structure, its production method, and starting material powder for producing same

Applicant:

Hitachi Metals, Ltd., Tokyo, JP;

Inventors:

Hirohisa Suwabe, Minato-ku, JP;

Masaru Yoshida, Moka, JP;

Tomomasa Kumagai, Miyako-gun, JP;

Hideya Yamane, Moka, JP;

Assignee:

Hitachi Metals, Ltd., Tokyo, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Joseph S Del Sole

Assistant Examiner:

Russell Kemmerle, III

Int. Cl.
CPC ...
C04B 35/478 (2006.01); B29C 71/02 (2006.01); C03C 14/00 (2006.01); C04B 38/00 (2006.01); C04B 41/00 (2006.01); C04B 41/50 (2006.01); C04B 41/85 (2006.01); C04B 111/00 (2006.01); F01N 3/022 (2006.01);
U.S. Cl.
CPC ...
B29C 71/02 (2013.01); C03C 14/00 (2013.01); C03C 2214/20 (2013.01); C04B 35/478 (2013.01); C04B 38/0006 (2013.01); C04B 41/009 (2013.01); C04B 41/5089 (2013.01); C04B 41/85 (2013.01); C04B 2111/00793 (2013.01); C04B 2111/0081 (2013.01); C04B 2235/3201 (2013.01); C04B 2235/3206 (2013.01); C04B 2235/3217 (2013.01); C04B 2235/3222 (2013.01); C04B 2235/3232 (2013.01); C04B 2235/3418 (2013.01); C04B 2235/36 (2013.01); C04B 2235/5436 (2013.01); C04B 2235/5445 (2013.01); C04B 2235/5463 (2013.01); C04B 2235/656 (2013.01); C04B 2235/6562 (2013.01); C04B 2235/6567 (2013.01); C04B 2235/77 (2013.01); C04B 2235/80 (2013.01); C04B 2235/9607 (2013.01); F01N 3/0222 (2013.01);
Abstract

A ceramic honeycomb structure having a large number of flow paths partitioned by porous cell walls, the cell walls comprising at least main crystals of aluminum titanate, in which MgO and SiOare dissolved to form a solid solution, and glass phases, the glass phases containing 40-80% by mass of SiOand 1-20% by mass of MgO, the average size of the glass phases being 30 μm or less in a cross section of the cell walls, and the area ratio of the glass phases to the total area of the main crystals of aluminum titanate and the glass phases being 2-12% in a cross section of the cell walls, and its production method.

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