Apparatus and methods of maintaining trivalent chromium bath plating efficiency
US10167564B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Jan 10, 2014 |
| Grant date | Jan 1, 2019 |
| Priority date | — |
| Expiry date | Dec 2, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D21/18
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An apparatus for maintaining trivalent chromium plating bath efficiency includes an aqueous electroplating bath, which includes trivalent chromium ions and a sulfur compound, and an ultraviolet (UV) radiation source that provides UV radiation to the bath effective to inhibit a reduction in plating efficiency of the bath.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.