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:
Apr. 18, 1978
Filed:
Jul. 15, 1976
Applicant:
Inventors:
D Alan Kay, Hamilton, CA;
William G Wilson, Pittsburgh, PA (US);
Assignee:
Molycorp, Inc., White Plains, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21C / ;
U.S. Cl.
CPC ...
75 58 ; 75 60 ;
Abstract
A method for desulphurizing iron, steel, stack gases and the like is provided in which rare earth oxides are reacted, in the presence of an agent, such as carbon, vacuum, reducing gases, etc. for reducing the oxygen level, with the sulphur to be removed to form one of the group consisting of rare earth sulphides, rare earth oxysulphides and mixtures thereof.