DIFF Subgroup
B01J 20/02 comprising inorganic material
Introduced: January 1980
Full Title
Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof > comprising inorganic material
Of 5 combined children, 4 exist in both systems.
1 codes are CPC-only extensions.
1 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 1980.
Child Classifications
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- B01J 20/04 comprising compounds of alkali metals, alkaline earth metals or magnesium since 1980 +5 CPC IPC+CPC Available in IPC and CPC
- B01J 20/06 comprising oxides or hydroxides of metals not provided for in group B01J20/04 since 1980 IPC+CPC Available in IPC and CPC
- B01J 20/20 comprising free carbon; comprising carbon obtained by carbonising processes since 1980 +1 CPC IPC+CPC Available in IPC and CPC