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Outline
Indent Level
Color Curly Brackets (indicating CPC extensions to IPC) References Date Revised
Search Symbol
CPC
COOPERATIVE PATENT CLASSIFICATION
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ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR [2013‑01]
NOTE

  • In this subclass, in the absence of an indication to the contrary, classification is made in the last appropriate place.
  • Compounds of particular interest are also classified in the relevant classes, e.g. C01, C07.
WARNING

  • The following IPC groups are not used in the CPC system. Subject matter covered by these groups is classified in the following CPC groups:

    C25B11/06 covered by B01J, C25B 11/0442
    C25B11/08 covered by B01J, C25B 11/0442
    C25B11/10 covered by C25B 11/0442
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Electrolytic production of inorganic compounds or non-metals [2013‑01]
.
{
by photo-electrolysis with or without external current source
}
[2013‑01]
C25B 1/006
.
{
of silicon
}
[2013‑01]
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.
of hydrogen or oxygen [2013‑01]
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. .
by electrolysis of water [2013‑01]
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C25B 1/06
. . .
in cells with flat or platelike electrodes [2013‑01]
C25B 1/08
. . . .
of the filter-press type [2013‑01]
. . .
in diaphragm cells [2013‑01]
. . .
in pressure cells [2013‑01]
.
of ozone [2013‑01]
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C25B 1/14
.
of alkali metal compounds [2013‑01]
C25B 1/16
. .
Hydroxides [2013‑01]
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C25B 1/18
.
of alkaline earth metal compounds or magnesium compounds [2013‑01]
C25B 1/20
. .
Hydroxides [2013‑01]
C25B 1/21
.
of manganese oxides [2013‑01]
C25B 1/22
.
of inorganic acids [2013‑01]
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.
of halogens or compounds thereof [2013‑01]
C25B 1/245
. .
{
Fluorine; Compounds therof
}
[2013‑01]
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C25B 1/26
. .
Chlorine; Compounds thereof [2013‑01]
C25B 1/265
. . .
{
Chlorates
}
[2013‑01]
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.
of per-compounds [2013‑01]
C25B 1/285
. .
{
Persulfates
}
[2013‑01]
C25B 1/30
. .
Peroxides [2013‑01]
C25B 1/32
. .
Perborates [2013‑01]
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C25B 1/34
.
Simultaneous production of alkali metal hydroxides and chlorine, its oxyacids or salts [2013‑01]
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C25B 1/36
. .
in mercury cathode cells [2013‑01]
C25B 1/38
. . .
with vertical mercury cathode [2013‑01]
C25B 1/40
. . .
with horizontal mercury cathode [2013‑01]
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C25B 1/42
. . .
Decomposition of amalgams [2013‑01]
C25B 1/44
. . . .
with the aid of catalysts [2013‑01]
C25B 1/46
. .
in diaphragm cells [2013‑01]
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Electrolytic production of organic compounds [2013‑01]
C25B 3/02
.
by oxidation [2013‑01]
C25B 3/04
.
by reduction [2013‑01]
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C25B 3/06
.
by halogenation [2013‑01]
C25B 3/08
. .
by fluorination [2013‑01]
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C25B 3/10
.
by coupling reactions, e.g. dimerisation [2013‑01]
C25B 3/105
. .
{
hydrodimerisation
}
[2013‑01]
C25B 3/12
.
of organo-metallic compounds [2013‑01]
Electrogenerative processes, i.e. processes for producing compounds in which simultaneously electricity is generated [2013‑01]
Electrophorectic production of compounds or non-metals (separation or purification of peptides, e.g. of proteins, by electrophoresis C07K 1/26) [2013‑01]
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Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies [2013‑01]
C25B 9/005
.
{
Amalgam decomposition cells
}
[2013‑01]
C25B 9/02
.
Holders for electrodes [2013‑01]
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.
Devices for current supply (electrical connections in general H01R); Electrode connections; Electric inter-cell connections [2013‑01]
C25B 9/045
. .
{
Electric inter-cell connections including jumper switches
}
[2013‑01]
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.
Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof [2013‑01]
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. .
{
including bipolar electrodes
}
[2013‑01]
C25B 9/066
. . .
{
and diaphragms
}
[2013‑01]
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C25B 9/08
. .
with diaphragm [2013‑01]
. . .
including an ion-exchange membrane in or on which electrode material is embedded [2013‑01]
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.
Cells or assemblies of cells comprising at least one movable electrode, e.g. rotary electrodes; Assemblies of constructional parts thereof [2013‑01]
C25B 9/125
. .
{
Rotary electrodes
}
[2013‑01]
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C25B 9/14
. .
Liquid electrodes, e.g. mercury electrodes [2013‑01]
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C25B 9/142
. . .
{
of the horizontal type
}
[2013‑01]
C25B 9/144
. . . .
{
Grouping of such cells into batteries
}
[2013‑01]
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C25B 9/146
. . .
{
of the vertical type
}
[2013‑01]
C25B 9/148
. . . .
{
Grouping of such cells into batteries
}
[2013‑01]
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.
Cells or assemblies of cells comprising at least one electrode made of particles; Assemblies of constructional parts thereof [2013‑01]
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. .
{
comprising fluidised bed electrodes
}
[2013‑01]
C25B 9/164
. . .
{
Grouping of such cells into batteries
}
[2013‑01]
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. .
{
comprising static bed electrodes
}
[2013‑01]
C25B 9/168
. . .
{
Grouping of such cells into batteries
}
[2013‑01]
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.
Assemblies comprising a plurality of cells (
{
C25B 9/005 takes precedence
}
; assemblies of cells with movable electrodes C25B 9/12; assemblies of cells with electrodes made of particles C25B 9/16)
[2013‑01]
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. .
of the filter-press type [2013‑01]
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. . .
{
with bipolar electrodes
}
[2013‑01]
C25B 9/206
. . . .
{
with diaphragms
}
[2013‑01]
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Electrodes; Manufacture thereof not otherwise provided for [2013‑01]
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.
characterised by shape or form [2013‑01]
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. .
perforated or foraminous [2013‑01]
. . .
Porous electrodes [2013‑01]
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C25B 11/04
.
characterised by the material [2013‑01]
. .
{
of electrodes having a substrate and a coating
}
[2013‑01]
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C25B 11/041
. .
{
characterised by the material of the substrate
}
[2013‑01]
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C25B 11/0415
. . .
{
consisting of one single element or compound
}
[2013‑01]
C25B 11/0421
. . . .
{
Silicon
}
[2013‑01]
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C25B 11/0426
. . .
{
consisting of plurality elements or compounds
}
[2013‑01]
C25B 11/0431
. . . .
{
Metal alloys
}
[2013‑01]
C25B 11/0436
. . . .
{
comprising metal powder and a non-metallic binder
}
[2013‑01]
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C25B 11/0442
. .
{
characterised by the material of the coating
}
[2013‑01]
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C25B 11/0447
. . .
{
Coatings consisting of a single component
}
[2013‑01]
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C25B 11/0452
. . . .
{
Non-noble metal oxides
}
[2013‑01]
C25B 11/0457
. . . . .
{
of the spinel type
}
[2013‑01]
C25B 11/0463
. . . . .
{
of the perouskite type
}
[2013‑01]
C25B 11/0468
. . . . .
{
of the rutile type
}
[2013‑01]
C25B 11/0473
. . . .
{
Noble metals
}
[2013‑01]
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C25B 11/0478
. . .
{
Coatings consisting of two or more components
}
[2013‑01]
C25B 11/0484
. . . .
{
comprising at least a noble metal or noble metal oxide and a non-noble metal oxide
}
[2013‑01]
C25B 11/0489
. . . .
{
at least one of the components being an organic compound
}
[2013‑01]
C25B 11/0494
. . . .
{
comprising two or more noble metals or noble metal alloys
}
[2013‑01]
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. .
Electrodes based on carbon (carbon masses in general C04B 35/52 )
{
(C25B 11/0405 takes precedence)
}
[2013‑01]
C25B 11/14
. . .
Impregnation of carbon electrodes
{
(C25B 11/0405 takes precedence)
}
[2013‑01]
. .
Electrodes based on manganese dioxide or lead dioxide
{
(C25B 11/0405 takes precedence)
}
[2013‑01]
. .
Mercury or amalgam electrodes
{
(C25B 11/0405 takes precedence)
}
[2013‑01]
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Diaphragms; Spacing elements [2013‑01]
C25B 13/02
.
characterised by form or shape [2013‑01]
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.
characterised by the material [2013‑01]
C25B 13/06
. .
based on asbestos [2013‑01]
. .
based on organic materials [2013‑01]
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Operating or servicing of cells [2013‑01]
.
Process control or regulation (controlling or regulating in general G05) [2013‑01]
.
Regulation of the inter-electrode distance (electro-machining B23P) [2013‑01]
C25B 15/06
.
Detection or inhibition of short circuits in the cell [2013‑01]
C25B 15/08
.
Supplying or removing reactants or electrolytes; Regeneration of electrolytes [2013‑01]
This page is owned by Office of Patent Classification.
Last Modified: 10/10/2013