comprising silica or silicate

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 > comprising silica or silicate

Of 4 combined children, 3 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 20/103 +1 CPC CPC only CPC only
B01J 20/12 Naturally occurring clays or bleaching earth since 1980 IPC+CPC Available in IPC and CPC
B01J 20/14 Diatomaceous earth since 1980 IPC+CPC Available in IPC and CPC
B01J 20/16 Alumino-silicates (B01J20/12 takes precedence) since 1980 +1 CPC IPC+CPC Available in IPC and CPC