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:
Feb. 06, 1990
Filed:
Jan. 03, 1989
Applicant:
Inventors:
Joseph E Ritsko, Towanda, PA (US);
Walter A Johnson, Houghton, MI (US);
Nelson E Kopatz, Sayre, PA (US);
Assignee:
GTE Products Corporation, Stamford, CT (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
427216 ; 427224 ; 427226 ; 427377 ;
Abstract
A method is disclosed for producing aluminum oxide coated cobalt powder which comprises contacting cobalt powder of fine particle size with a liquid aluminum compound wherein the aluminum is hydrolyzable and adding water to the compound and the cobalt powder to form a slurry, removing essentially all of the liquid from the slurry to produce cobalt powder with a coating of hydrolyzed aluminum oxide, and firing the cobalt powder with the hydrolyzed aluminum oxide coating in a non-oxidizing atmosphere to produce cobalt powder with a coating of aluminum oxide.