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:
Oct. 05, 2004
Filed:
Mar. 04, 2002
Applicant:
Inventor:
Robert A. Hard, Hallowell, ME (US);
Assignee:
Cabot Corporation, Boston, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01G 3/500 ; C01B 1/716 ; B01J 8/00 ;
U.S. Cl.
CPC ...
C01G 3/500 ; C01B 1/716 ; B01J 8/00 ;
Abstract
Methods to control hydrogen sulfide and/or arsine emissions are described. The method involves adding at least one copper compound (such as a copper(II) compound) to the material, such as material containing sulfur in a sufficient amount to control said emissions. The material that is treated with the copper compound(s) is preferably an ore, such as a valve metal containing ore.