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. 13, 1991
Filed:
Mar. 06, 1989
Kazunori Ihara, Iwakuni, JP;
Hiroshi Murakami, Hiroshima, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
There is provided an improved catalyst for purifying exhaust gases comprising a carrier carrying alumina, zirconium oxide and a noble metal catalyst. The improvement resides in the fact that the carrier carries the alumina as a layer having dispersed therein the zirconium oxide particles, the zirconium oxide particles carrying said noble metal catalyst. The dispersibility of the noble metal catalytic component is thereby improved and the sintering prevention effect on the noble metal catalytic component by the zirconium oxide is effectively exhibited. Thus, the heat-proof property of the catalyst is improved and the cooperation between the noble metal catalytic component and alumina is effectively enhanced, improving longevity of the catalyst.