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:
Jan. 08, 2013
Filed:
May. 02, 2012
Paul Joseph Andersen, Plymouth Meeting, PA (US);
Hai-ying Chen, Conshohocken, PA (US);
Joseph Michael Fedeyko, Glen Mills, PA (US);
Erich Weigert, Newtown Square, PA (US);
Paul Joseph Andersen, Plymouth Meeting, PA (US);
Hai-Ying Chen, Conshohocken, PA (US);
Joseph Michael Fedeyko, Glen Mills, PA (US);
Erich Weigert, Newtown Square, PA (US);
Johnson Matthey Public Limited Company, London, GB;
Abstract
A method of using a catalyst comprises exposing a catalyst to at least one reactant in a chemical process. The catalyst comprises copper and a small pore molecular sieve having a maximum ring size of eight tetrahedral atoms. The chemical process undergoes at least one period of exposure to a reducing atmosphere. The catalyst has an initial activity and the catalyst has a final activity after the at least one period of exposure to the reducing atmosphere. The final activity is within 30% of the initial activity at a temperature between 200 and 500° C.