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. 30, 2009
Filed:
Mar. 27, 2007
Mamoru Nishimura, Nagoya, JP;
Mikio Ishihara, Kariya, JP;
Hirofumi Yamashita, Tokoname, JP;
Hiromi Sano, Nagoya, JP;
Mamoru Nishimura, Nagoya, JP;
Mikio Ishihara, Kariya, JP;
Hirofumi Yamashita, Tokoname, JP;
Hiromi Sano, Nagoya, JP;
Denso Corporation, Kariya, JP;
Abstract
An exhaust gas purifying filter is made of a ceramic material in a honeycomb structure having introduction passages for introducing exhaust gas that includes particulate matter emitted from an internal combustion engine, porous walls that collect the particulate matter and exhaust passages for exhausting the exhaust gas after the particulate matter has been removed therefrom, with the porous walls supporting a catalyst for oxidizing and removing the particulate matter. The porosity of the porous wall is in a range from 55 to 80%, the mean pore size is in-a range from 30 to 50 μm, and the total volume X of the pores included in the exhaust gas purifying filter and the volume Y of the pores that are not smaller than 100 μm satisfy the relation of inequality Y/X≦0.05.