DIFF Subgroup
C10G 21/06 characterised by the solvent used
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Refining of hydrocarbon oils, in the absence of hydrogen, by extraction with selective solvents > characterised by the solvent used
CPC:
Refining of hydrocarbon oils, in the absence of hydrogen, by extraction with selective solvents (C10G17/00, C10G19/00 take precedence) > characterised by the solvent used
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
Child Classifications
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