Method for processing acid treatment solution, solution processed thereby, and method for treating articles therewith
US6793738B2 · kind B2 · utility
3Cited by
11References
36Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 28, 2002 |
| Grant date | Sep 21, 2004 |
| Priority date | — |
| Expiry date | Apr 22, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23F1/44
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method for preparing a solution for treating an article, a treatment solution made thereby, and a method for treating an article with the solution are presented with, for example, the treatment method comprising providing a quantity of treatment solution, the treatment solution comprising an acid having the formula HxAF6, wherein A is selected from the group consisting of Si, Ge, Ti, Zr, Al, and Ga, and x is in the range from about 1 to about 6; determining a concentration of free acid contaminant in the treatment solution; and removing the concentration of free acid contaminant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.