C25C PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
Introduced: July 1974
Description
C25C covers electrolytic methods and equipment for producing, recovering, or refining metals from ores, scrap, or intermediate compounds through electrochemical reduction or oxidation. This subclass encompasses aqueous and molten salt electrolysis, electrowinning, electrorefining, and electroplating processes applied to ferrous and non-ferrous metals including copper, zinc, nickel, aluminum, and precious metals. Typical apparatus covered include electrolytic cells, cathodes, anodes, electrolytes, and auxiliary equipment for current distribution and process control. Adjacent subclass C25D addresses electroplating and related coating processes, while C25B covers electrolysis of inorganic compounds not primarily directed at metal extraction.
IPC and CPC are identically structured here. All 4 subcodes exist in both systems.
3 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 1974.
Child Classifications
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- C25C 1/00 Electrolytic production, recovery or refining of metals by electrolysis of solutions (C25C5/00 takes precedence) since 1974 IPC+CPC Available in IPC and CPC
- C25C 3/00 Electrolytic production, recovery or refining of metals by electrolysis of melts (C25C5/00 takes precedence) since 1974 IPC+CPC Available in IPC and CPC
- C25C 5/00 Electrolytic production, recovery or refining of metal powders or porous metal masses since 1974 IPC+CPC Available in IPC and CPC
- C25C 7/00 Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells (for the production of aluminium C25C3/06 - C25C3/22) since 1974 +3 CPC IPC+CPC Available in IPC and CPC