CPC Subgroup
C01F 17/10 Preparation or treatment, e.g. separation or purification
Full Title
Compounds of rare earth metals > Preparation or treatment, e.g. separation or purification
2 direct subcodes
Child Classifications
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- C01F 17/13 by using ion exchange resins, e.g. chelate resins
- C01F 17/17 involving a liquid-liquid extraction