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:
Sep. 01, 1992
Filed:
Jul. 16, 1991
Applicant:
Inventors:
Franz-Josef Weiss, Neuhofen, DE;
Hugo Fuchs, Ludwigshafen, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ; L01B / ;
U.S. Cl.
CPC ...
502 25 ; 423387 ; 502 27 ;
Abstract
A method of regenerating noble metal catalysyts used for the catalytic reduction of nitrogen oxide with hydrogen, wherein the noble metal catalyst is treated with an aqueous alkaline solution having a pH of more than 9.