Method of controlling chemical bath composition in a manufacturing environment
US6471845B1 · kind B1 · utility
26Cited by
10References
11Claims
0Family size
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Key dates
| Filing date | Dec 15, 1999 |
| Grant date | Oct 29, 2002 |
| Priority date | — |
| Expiry date | Dec 15, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2509
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method for controlling the composition of a chemical bath in which predictive dosing is used to account for changes in the composition of the bath in which the operating characteristics of the process are partitioned into a plurality of operating modes and the consumption or generation of materials related to the process are determined empirically and additions of material are made as appropriate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.