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:
Aug. 21, 2012
Filed:
Sep. 11, 2007
Tomomi Hase, Kariya, JP;
Yoshiharu Miyake, Aichi-ken, JP;
Tomomi Hase, Kariya, JP;
Yoshiharu Miyake, Aichi-ken, JP;
Denso Corporation, Kariya, JP;
Abstract
A ceramic catalyst body has a ceramic carrier supporting catalyst therein. The ceramic carrier has plural cells surrounded by plural cell walls arranged in a honeycomb shape, and a catalyst separation ratio H of the ceramic carrier expressed by the following formula is not more than 35%. H=217.254+(−0.167)×T+0.345×D+28.731×ΔCTE−3.343×S, where Δ CTE(×10/° C.) is a difference between a thermal expansion coefficient Cof the ceramic catalyst body and a thermal expansion coefficient Cof the ceramic carrier, T(K) is an internal temperature of the ceramic carrier, D(cc/g) is a amount of fine pores of not more than 2 μm in the ceramic carrier, and S(%) is a surface porosity indicating the ratio of an area of opening parts of the fine pores on a surface of the ceramic carrier.