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:
Jul. 12, 2011
Filed:
Apr. 04, 2008
Hiroto Kikuchi, Hiratsuka, JP;
Katsuo Suga, Yokohama, JP;
Masanori Nakamura, Yokosuka, JP;
Hironori Wakamatsu, Yokohama, JP;
Kazuyuki Shiratori, Yokohama, JP;
Toshiharu Miyamura, Yokohama, JP;
Jun Ikezawa, Yokosuka, JP;
Hiroto Kikuchi, Hiratsuka, JP;
Katsuo Suga, Yokohama, JP;
Masanori Nakamura, Yokosuka, JP;
Hironori Wakamatsu, Yokohama, JP;
Kazuyuki Shiratori, Yokohama, JP;
Toshiharu Miyamura, Yokohama, JP;
Jun Ikezawa, Yokosuka, JP;
Nissan Motor Co., Ltd., Yokohama-shi, Kanagawa, JP;
Abstract
Disclosed is an exhaust gas purifying catalyst exhibiting excellent purification performance for a long period of time by suppressing coagulation of a noble metal. A catalyst powder comprises a noble metal and first and second compounds. In the catalyst powder, the first compound carries the noble metal and is separated from another first compound carrying a noble metal by the second compound. At least one catalyst layer comprising the catalyst powder is formed on an inner surface of a substrate. The catalyst layer has fine pores. A fine pore volume of fine pores having a fine pore diameter of greater than 0.1 μm to less than or equal to 1 μm is 10% to 60% of the fine pore volume of fine pores having a pore diameter of 1.0 μm or less.