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:
Jan. 03, 2023
Filed:
Nov. 30, 2016
Applicant:
Norsk Hydro Asa, Oslo, NO;
Inventors:
Øystein Bauger, Trondheim, NO;
Oddvin Reiso, Sunndalsøra, NO;
Hans Bjerkaas, Lier, NO;
Tom Hauge, Førresfjorden, NO;
Snorre Kjørstad Fjeldbo, Skedsmokorset, NO;
Assignee:
NORSK HYDRO ASA, Oslo, NO;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22C 21/02 (2006.01); C25D 11/04 (2006.01); C22F 1/043 (2006.01); C23F 1/36 (2006.01); B21C 23/00 (2006.01); C22C 21/08 (2006.01); C22F 1/05 (2006.01); C22F 1/04 (2006.01); C22F 1/047 (2006.01); C25D 11/16 (2006.01);
U.S. Cl.
CPC ...
C22C 21/02 (2013.01); B21C 23/00 (2013.01); C22C 21/08 (2013.01); C22F 1/04 (2013.01); C22F 1/043 (2013.01); C22F 1/047 (2013.01); C22F 1/05 (2013.01); C23F 1/36 (2013.01); C25D 11/04 (2013.01); C25D 11/16 (2013.01);
Abstract
Aluminium alloys suitable for etched and anodized components, in particular aluminum extrusion alloys of the types containing Magnesium and Silicon, which after being extruded to any wide variety of forms for different applications such as house buildings and other building applications is subjected to etching in a conventional alkaline etching bath and subsequent anodizing, wherein the relation between Cu and Zn is controlled to avoid preferential grain etching and the ratio of Cu/Zn is below 1.