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. 16, 1984
Filed:
Feb. 27, 1984
Applicant:
Inventor:
Olen L Riggs, Jr, Bethany, OK (US);
Assignee:
Kerr-McGee Chemical Corporation, Oklahoma City, OK (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C25B / ;
U.S. Cl.
CPC ...
204 96 ; 204293 ; 420497 ; 420499 ;
Abstract
A method for the preparation of electrolytic manganese dioxide is provided employing improved cathodes, said cathodes being characterized by their reduced tendency to corrode and undergo buildup of current inhibiting scale under electrolytic conditions. The improved cathodes are fabricated from copper comprised of at least about 99.95 weight percent of copper, from about 0.001 to about 0.085 weight percent of silver and up to about 0.003 weight percent of phosphorous. The weight ratio of phosphorous to silver in said copper cathode will be no greater than about 2.0 to 1.0.