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:
Mar. 20, 1990
Filed:
Oct. 17, 1988
Applicant:
Inventors:
Malte Berndt, Sinsheim-Rohrbach, DE;
Dieter Ksinsik, Sinsheim-Rohrbach, DE;
Assignee:
Doduco GmbH & Co., Pforzheim, DE;
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ;
U.S. Cl.
CPC ...
502304 ; 502332 ; 502333 ; 502334 ; 4232135 ;
Abstract
A process for the preparation of catalysts, in particular for the purification of exhaust gases from internal combustion engines, is described, which makes it possible to use supports stable up to at least 1,200.degree. C. which are free of gamma-aluminium oxide and transition aluminium oxide and nevertheless have a high catalytic activity. The catalytically active noble metal as the constituent of a composite powder is attached to the support, which in addition to the noble metal contains a thermally stable metal oxide and is prepared by the spray pyrolysis process.