Process for coating and/or touching up coatings on metallic surfaces
USRE40406E1 · kind E1 · reissue
4Cited by
6References
22Claims
0Family size
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Key dates
| Filing date | Mar 26, 2004 |
| Grant date | Jul 1, 2008 |
| Priority date | — |
| Expiry date | Mar 26, 2024 |
Classification
- Technology area (CPC —)General
Abstract
A composition and method for coating and touching up a metal surface is provided. The composition contains from about 0.5 to about 240 millimoles per kilogram of a fluorometallate ion, from about 0.5 grams/liters to about 10 grams/liter of phosphorous-containing inorganic oxy anions calculated at their stoichiometric equivalent as H3PO4; from about 0.05 g/l to about 3.5 g/l of hexavalent chromium and from about 0.10 g/l to about 2.20 g/l of trivalent chromium ions and a surfactant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.