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. 10, 2009
Filed:
Dec. 08, 2005
Applicants:
Leslie Wilfred Benum, Red Deer, CA;
Michael C. Oballa, Cochrane, CA;
Sabino Steven Anthony Petrone, Edmonton, CA;
Inventors:
Leslie Wilfred Benum, Red Deer, CA;
Michael C. Oballa, Cochrane, CA;
Sabino Steven Anthony Petrone, Edmonton, CA;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23C 8/14 (2006.01); C23C 8/18 (2006.01); C23C 8/34 (2006.01); C22C 38/18 (2006.01); C22C 38/42 (2006.01);
U.S. Cl.
CPC ...
Abstract
A stainless steel comprising at least 20 weight % of chromium and at least 1.0 weight % of manganese is adapted to support an overcoating having a thickness from 1 to 10 microns of a spinel of the formula MnCrOwherein x is from 0.5 to 2. Preferably the overcoating is on chromia and has stability against chemical reaction at temperatures at least 25° C. higher than the uncoated chromia.