the extracting agent being a nitrogenous solvent or a mixture of nitrogenous solvents such as amines or amides

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Patents Grantslast 30 patents

Information Patent Grant
Phosphoric acid extraction process
- Patent number 4,543,239
- Issue date Sep 24, 1985
- International Minerals & Chemical Corp.
- Martin J. Jacobs
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Purifying phosphoric acid by extraction with an aliphatic nitrile
- Patent number 4,190,634
- Issue date Feb 26, 1980
- Monsanto Company
- William A. Feiler
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
3458282
- Patent number 3,458,282
- Issue date Jul 29, 1969
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
3367749
- Patent number 3,367,749
- Issue date Feb 6, 1968
- C01 - INORGANIC CHEMISTRY