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:
Jun. 15, 2010
Filed:
Dec. 30, 2008
Applicant:
Paul J. Marcantonio, San Rafael, CA (US);
Inventor:
Paul J. Marcantonio, San Rafael, CA (US);
Assignee:
Chevron U.S.A. Inc, San Ramon, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22B 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The process of this invention is directed to the removal of metals from an unsupported spent catalyst. The catalyst is subjected to leaching reactions. Vanadium is removed as a precipitate, while a solution comprising molybdenum and nickel is subjected to further extraction steps for the removal of these metals. Molybdenum may alternately be removed through precipitation.