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.

Date of Patent:
Jun. 25, 2024

Filed:

Jul. 29, 2022
Applicant:

Cirrus Materials Science Limited, Auckland, NZ;

Inventors:

Fengyan Hou, Auckland, NZ;

Christopher William Goode, Auckland, NZ;

Ian John Mardon, Auckland, NZ;

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C25D 5/44 (2006.01); C23F 13/00 (2006.01); C25D 3/12 (2006.01); C25D 11/12 (2006.01);
U.S. Cl.
CPC ...
C25D 3/12 (2013.01); C23F 13/005 (2013.01); C25D 5/44 (2013.01); C25D 11/12 (2013.01);
Abstract

In example implementations, a method for coloring an alloy is provided. The method includes anodizing a substrate in an anodizing bath comprising phosphoric acid, at a constant temperature and a constant voltage for a first time period to develop an anodizing layer that includes a barrier layer, reducing the constant voltage applied to the anodizing bath for a second time period to change a thickness of the barrier layer and change a width of pores in the anodizing layer, plating the substrate in a plating bath at a first current that is increased over a third time period in accordance with a current profile of the plating bath, and plating the substrate in the plating bath at a second current for a fourth time period.


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