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PCE
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DIFF Subgroup
C10G 21/30

Controlling or regulating

Introduced: January 1980

Full Title

Full titles differ between systems:

IPC:

Refining of hydrocarbon oils, in the absence of hydrogen, by extraction with selective solvents > Controlling or regulating

CPC:

Refining of hydrocarbon oils, in the absence of hydrogen, by extraction with selective solvents (C10G17/00, C10G19/00 take precedence) > Controlling or regulating

No child classifications to compare. This is a leaf node in both IPC and CPC.