Method for anodizing and dyeing metallic article
US9353454B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 12, 2013 |
| Grant date | May 31, 2016 |
| Priority date | — |
| Expiry date | Jan 22, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D11/30
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method for anodizing and dyeing a metallic article including a decorated surface to be dyed, includes steps as follows: anodizing the metallic article to form an anodization layer on the decorated surface by an anodizing treatment, in which the anodization layer is porous with a number of holes; sealing the anodization layer of the metallic article anodized by a first sealing treatment in a first sealing solution, in which a contacting time of the anodization layer and the first sealing solution changes gradually along a predetermined direction, and thereby a depth of the holes of the anodization layer after sealing changes gradually along the predetermined direction; and coloring the metallic article sealed in a dyeing treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.