DIFF Subgroup Additional Only
C01B 2203/0405 Purification by membrane separation
Full Title
Integrated processes for the production of hydrogen or synthesis gas > containing a purification step for the hydrogen or the synthesis gas > Purification by membrane separation
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.
Note: 1 CPC extensions are marked as secondary classification only.