Nitrile solvents
US12006493B2 · kind B2 · utility
0Cited by
6References
17Claims
0Family size
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Key dates
| Filing date | Sep 23, 2021 |
| Grant date | Jun 11, 2024 |
| Priority date | — |
| Expiry date | Aug 25, 2042 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B37/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of removing from a surface a solid sulfur-containing impurity composition comprising a sulfur-containing compound, the method comprising the step of dissolving sulfur-containing compound in the sulfur-containing impurity composition with a nitrile compound to form a treated sulfur-containing impurity composition comprising less than 99.5 wt % sulfur-containing compound, based on the total weight of the treated sulfur-containing impurity composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.