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. 14, 1989
Filed:
Jan. 22, 1988
Helmut Schmelz, Prien, DE;
Helmut Thomann, Munich, DE;
Renate Kuschke, Feldkirchen-Westerham, DE;
Eva-Helga Wilbert, Munich, DE;
Wolfgang Gajewski, Buckenhof, DE;
Josef Sprehe, Furth-Vach, DE;
Norbert Landgraf, Ruckersdorf, DE;
Hans Ranly, Marloffstein, DE;
Lothar Balling, Furth, DE;
Richard Reppisch, Herzogenaurach, DE;
Dietmar Hein, Nuremberg, DE;
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
Catalytic material for reducing nitrous oxides in flue gases in the presence of ammonia in which titanium oxide is used as the starting material and the latter is milled together with vanadium oxide and one or more oxides of the elements tungsten, molybdenum, phosphorus, chromium, copper, iron, uranium and is thereafter subjected to at least one thermal treatment. Tungsten and molybdenum are substituted here entirely or partially by phosphorus in the form of its oxides or phosphates.