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:
May. 10, 2005
Filed:
Dec. 02, 2002
Hirohisa Suwabe, Fukuoka-ken, JP;
Shunji Okazaki, Fukuoka-ken, JP;
Osamu Tokudome, Tochigi-ken, JP;
Yasuhiko Otsubo, Fukuoka-ken, JP;
Hirohisa Suwabe, Fukuoka-ken, JP;
Shunji Okazaki, Fukuoka-ken, JP;
Osamu Tokudome, Tochigi-ken, JP;
Yasuhiko Otsubo, Fukuoka-ken, JP;
Hitachi Metals Ltd., Tokyo, JP;
Abstract
A ceramic honeycomb filter comprising a ceramic honeycomb structure having porous partition walls defining a plurality of flow paths for flowing an exhaust gas through the porous partition walls to remove particulates from the exhaust gas, wherein one end of each flow path is provided with a sealer, such that sealers of the flow paths in an inlet and an outlet of the ceramic honeycomb structure in a desired pattern; wherein the partition walls have thickness of 0.1-0.5 mm and a porosity of 50-80%; wherein the porosity of the sealers is larger than that of partition walls; and wherein the depth of the sealers is 3-15 mm.