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PCE
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DIFF Subgroup
C01B 32/354

After-treatment

Introduced: January 2017

Full Title

Full titles differ between systems:

IPC:

Carbon; Compounds thereof > Active carbon > After-treatment

CPC:

Carbon; Compounds thereof (C01B21/00, C01B23/00 take precedence; percarbonates C01B15/10; carbon black C09C1/48) > Active carbon > After-treatment

Of 5 combined children, 4 exist in both systems.

1 codes are CPC-only extensions.

IPC defines codes here since 2017.

Child Classifications

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  • C01B 32/372 Coating; Grafting; Microencapsulation since 2017 IPC+CPC Available in IPC and CPC
  • C01B 32/378 Purification since 2017 IPC+CPC Available in IPC and CPC
  • C01B 32/382 CPC only CPC only
  • C01B 32/384 Granulation since 2017 IPC+CPC Available in IPC and CPC