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. 17, 1979
Filed:
Mar. 06, 1978
Applicant:
Inventors:
Ranko Crnojevich, Gretna, LA (US);
Edward I Wiewiorowski, New Orleans, LA (US);
Luther R Tinnin, New Orleans, LA (US);
Assignee:
AMAX Inc., Greenwich, CT (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C22B / ;
U.S. Cl.
CPC ...
75 / ; 75 / ; 75108 ; 75109 ; 75119 ; 2524 / ;
Abstract
A method is provided for decreasing the silicon content of relatively pure nickel and/or cobalt powder, wherein silicon is present as an impurity substantially in the oxidic state. The method comprises mixing the metal powder in an aqueous solution of an alkali metal hydroxide, e.g. sodium hydroxide, with the temperature of the solution ranging from ambient to below boiling and maintaining the powder in contact with the solution until the silicon content of the powder has been reduced to the desired level.