Working-up tar

Introduced: September 1968

Of 6 combined children, 5 exist in both systems.

1 codes are CPC-only extensions.

3 shared codes have differing titles between IPC and CPC.

Child Classifications

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C10C 1/005 CPC only CPC only
C10C 1/02 Removal of water (by distillation C10C1/06 ) IPC+CPC Available in IPC and CPC
C10C 1/04 by distillation IPC+CPC Available in IPC and CPC
C10C 1/18 by extraction with selective solvents (preparation of hydrocarbon oils from tar oils C10G21/00) IPC+CPC Available in IPC and CPC
C10C 1/19 by thermal treatment not involving distillation since 1985 IPC+CPC Available in IPC and CPC
C10C 1/20 Refining by chemical means (obtaining hydrocarbon oils C10G) +1 CPC IPC+CPC Available in IPC and CPC