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:
Dec. 12, 2006
Filed:
Jul. 28, 2003
Applicant:
Gordon James Kelly, County Durham, GB;
Inventor:
Gordon James Kelly, County Durham, GB;
Assignee:
Johnson Matthey PLC, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 21/18 (2006.01); B01J 23/72 (2006.01); C01B 31/20 (2006.01); C01B 3/26 (2006.01);
U.S. Cl.
CPC ...
Abstract
A catalyst bed combination comprising a bed of a particulate copper-containing catalyst and, upstream of the catalyst bed, a guard bed in the form of shaped units formed from lead oxide particles and a particulate support material. The guard bed extends the life of the copper catalyst by absorbing halide contaminants in the process stream.