C01B 25/466
The extracting agent being a nitrogenous solvent or a mixture of nitrogenous
Official title: {the extracting agent being a nitrogenous solvent or a mixture of nitrogenous solvents such as amines or amides}
C01B25/466 (The extracting agent being a nitrogenous solvent or a mixture of nitrogenous) appears on 2 US grants and 0 published applications in this corpus.
Search patents in C01B- Granted patents
- 2
- Published applications
- 0
- Assignees
- 2
- Inventors
- 2
- Latest grant
- 24 Sep 1985
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| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
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