DIFF Subgroup
C10C 1/18 by extraction with selective solvents (preparation of hydrocarbon oils from tar oils C10G21/00)
Introduced: September 1968
Title
Titles differ between systems:
IPC: by extraction with selective solvents
CPC: by extraction with selective solvents (preparation of hydrocarbon oils from tar oils C10G21/00)
Full Title
Full titles differ between systems:
IPC:
Working-up tar > by extraction with selective solvents
CPC:
Working-up tar > by extraction with selective solvents (preparation of hydrocarbon oils from tar oils C10G21/00)
No child classifications to compare. This is a leaf node in both IPC and CPC.