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Outline
Indent Level
Color Curly Brackets (indicating CPC extensions to IPC) References Date Revised

CPC
COOPERATIVE PATENT CLASSIFICATION
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PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
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Electrolytic production, recovery or refining of metals by electrolysis of solutions (C25C 5/00 takes precedence)
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C25C 1/02
.
of light metals
C25C 1/04
. .
in mercury cathode cells
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C25C 1/06
.
or iron group metals, refractory metals or manganese
C25C 1/08
. .
of nickel or cobalt
C25C 1/10
. .
of chromium or manganese
C25C 1/12
.
of copper
C25C 1/14
.
of tin
C25C 1/16
.
of zinc, cadmium or mercury
C25C 1/18
.
of lead
C25C 1/20
.
of noble metals
C25C 1/22
.
of metals not provided for in groups C25C 1/02 to C25C 1/20
C25C 1/24
.
Alloys obtained by cathodic reduction of all their ions
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Electrolytic production, recovery or refining of metals by electrolysis of melts (C25C 5/00 takes precedence)
C25C 3/02
.
of alkali or alkaline earth metals
C25C 3/04
.
of magnesium
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C25C 3/06
.
of aluminium
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. .
Cell construction, e.g. bottoms, walls, cathodes
C25C 3/085
. . .
{
characterised by its non electrically conducting heat insulating parts
}
C25C 3/10
. . .
External supporting frames or structures
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. . .
Anodes
. . . .
{
based on carbon
}
C25C 3/14
. .
Devices for feeding or crust breaking
C25C 3/16
. .
Electric current supply devices, e.g. bus bars
C25C 3/18
. .
Electrolytes
. .
Automatic control or regulation of cells (controlling or regulating in general G05)
C25C 3/22
. .
Collecting emitted gases
C25C 3/24
. .
Refining
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.
of titanium, zirconium, hafnium, tantalum or vanadium
. .
of titanium
C25C 3/30
.
of manganese
C25C 3/32
.
of chromium
C25C 3/34
.
of metals not provided for in groups C25C 3/02 to C25C 3/32
C25C 3/36
.
Alloys obtained by cathodic reduction of all their ions
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C25C 5/00
Electrolytic production, recovery or refining of metal powders or porous metal masses
C25C 5/02
.
from solutions
C25C 5/04
.
from melts
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Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells (for the production of aluminium C25C 3/06 to C25C 3/22)
C25C 7/002
.
{
of cells comprising at least an electrode made of particles (C25C 7/005, C25C 7/02 to C25C 7/06 take precedence)
}
C25C 7/005
.
{
of cells for the electrolysis of melts (C25C 7/02 to C25C 7/06 take precedence)
}
.
{
of cells comprising at least a movable electrode (C25C 7/002, C25C 7/02 to C25C 7/06 take precedence)
}
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C25C 7/02
.
Electrodes (consumable anodes for the refining the metals C25C 1/00 to C25C 5/00); Connections thereof
C25C 7/025
. .
{
used in cells for the electrolysis of melts
}
.
Diaphragms; Spacing elements
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.
Operating or servicing
C25C 7/08
. .
Separating of deposited metals from the cathode
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Last Modified: 10/10/2013