DIFF Subgroup Additional Only
B01J 2531/001 General concepts, e.g. reviews, relating to catalyst systems and methods of making them, the concept being defined by a common material or method/theory
Full Title
Additional information regarding catalytic systems classified in B01J31/00 > General concepts, e.g. reviews, relating to catalyst systems and methods of making them, the concept being defined by a common material or method/theory
Of 2 combined children, 0 exist in both systems.
2 codes are CPC-only extensions.
Note: 2 CPC extensions are marked as secondary classification only.