CPC Main Group
C10G 31/00 Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for (by distillation C10G7/00)
5 direct subcodes
Child Classifications
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- C10G 31/06 by heating, cooling, or pressure treatment
- C10G 31/08 by treating with water
- C10G 31/09 by filtration
- C10G 31/10 with the aid of centrifugal force
- C10G 31/11 by dialysis