| US 7,488,412 B2 | ||
| Honeycomb structural body, honeycomb filter, and method of manufacturing the structural body and the filter | ||
| Fumio Abe, Handa (Japan); and Toshio Yamada, Nagoya (Japan) | ||
| Assigned to NGK Insulators, Ltd., Nagoya (Japan) | ||
| Appl. No. 10/482,299 PCT Filed Jun. 18, 2002, PCT No. PCT/JP02/06035 § 371(c)(1), (2), (4) Date Dec. 30, 2003, PCT Pub. No. WO03/008165, PCT Pub. Date Jan. 30, 2003. |
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| Claims priority of application No. 2001-214537 (JP), filed on Jul. 13, 2001; and application No. 2001-214557 (JP), filed on Jul. 13, 2001. | ||
| Prior Publication US 2004/0131512 A1, Jul. 08, 2004 | ||
| Int. Cl. B01D 53/34 (2006.01); F01N 3/28 (2006.01) | ||
| U.S. Cl. 208—180 [208/179] | 52 Claims |
| 1. A honeycomb structural body comprising: a plurality of through channels formed by a plurality of partition walls extending
in an axial direction from a first axial end of the honeycomb structural body to a second axial end thereof, wherein
the honeycomb structural body is constituted of a plurality of honeycomb sections formed of materials having different characteristics,
and the plurality of honeycomb sections are directly bonded to and integrated with one another,
the honeycomb structural body is formed as an integrated structure by extrusion, and
at least one said axial end of the honeycomb structural body includes a convex structure or a concave structure.
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