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. 28, 1992
Filed:
Aug. 16, 1988
Applicant:
Inventors:
David A Campbell, Middlesex, GB;
Nicholas P Wilkinson, Surrey, GB;
Assignee:
The British Petroleum Company p.l.c., London, GB;
Primary Examiner:
Int. Cl.
CPC ...
C22B / ; B01J / ; B01J / ;
U.S. Cl.
CPC ...
75421 ; 75633 ; 502 22 ; 502 27 ; 502 50 ;
Abstract
A method of separating metals from carbon-supported catalyst materials comprises the steps of combusting the carbon at a temperature insufficient to cause volatisation of the metal followed by reduction with hydrogen of any oxidised metal and washing with acid or water.