Patent Classification Explorer PCE

DIFF Main Group

C22B 23/00

Obtaining nickel or cobalt

Introduced: September 1968

Of 4 combined children, 2 exist in both systems.

2 codes are CPC-only extensions.

Child Classifications

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C22B 23/005 CPC only CPC only
C22B 23/02 by dry processes +5 CPC IPC+CPC Available in IPC and CPC
C22B 23/04 +3 CPC CPC only CPC only
C22B 23/06 Refining +1 CPC IPC+CPC Available in IPC and CPC