DIFF Subgroup
B01J 20/28 characterised by their form or physical properties
Introduced: January 1980
Full Title
Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof > characterised by their form or physical properties
Of 3 combined children, 0 exist in both systems.
3 codes are CPC-only extensions.
Child Classifications
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