IPC 7 English version C25B !A-C25B 15/08

C25-C25B01508

SECTION C – CHEMISTRY; METALLURGY

C 25

ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR (electrodialysis, electro-osmosis, separation of liquids by electricity B01D; working of metal by the action of a high concentration of electric current B23H; treatment of water, waste water or sewage by electrochemical methods C02F 1/46; surface treatment of metallic material or coating involving at least one process provided for in class C23 and at least one process covered by this class C23C 28/00, C23F 17/00; anodic or cathodic protection C23F; single-crystal growth C30B; metallising textiles D06M 11/83; decorating textiles by locally metallising D06Q 1/04; electrochemical methods of analysis G01N; electrochemical measuring, indicating or recording devices G01R; electrolytic circuit elements, e.g. capacitors, H01G; electrochemical current or voltage generators H01M) [4]

C 25 B

ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON- METALS; APPARATUS THEREFOR [2]

Notes

(1)

In this subclass, in the absence of an indication to the contrary, classification is made in the last appropriate place. [2]

(2)

Compounds of particular interest are also classified in the relevant classes, e.g. in C01, C07. [2]

Electrolytic production of inorganic compounds or non-metals [2]

of hydrogen or oxygen [2]

by electrolysis of water [2]

in cells with flat or plate-like electrodes [2]

of the filter-press type [2]

in diaphragm cells [2]

in pressure cells [2]

of ozone [7]

of alkali metal compounds [2]

Hydroxides [2]

of alkaline earth metal compounds or magnesium compounds [2]

Hydroxides [2]

of manganese oxides [7]

of inorganic acids [2]

of halogens or compounds thereof [2]

Chlorine; Compounds thereof [2]

of per-compounds [2]

Peroxides [2]

Perborates [2]

Simultaneous production of alkali metal hydroxides and chlorine, its oxyacids or salts [2]

in mercury cathode cells [2]

with vertical mercury cathode [2]

with horizontal mercury cathode [2]

Decomposition of amalgams [2]

with the aid of catalysts [2]

in diaphragm cells [2]

Electrolytic production of organic compounds [2]

by oxidation [2]

by reduction [2]

by halogenation [2]

by fluorination [2]

by coupling reactions, e.g. dimerisation [2]

of organo-metallic compounds [2]

Electrogenerative processes, i.e. processes for producing compounds in which simultaneously electricity is generated [2]

Electrophoretic production of compounds or non-metals (separation or purification of peptides, e.g. of proteins, by electrophoresis C07K 1/26) [2]

Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies [2,7]

Holders for electrodes [2]

Devices for current supply (electrical connections in general H01R); Electrode connections; Electric inter-cell connections [2]

Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof [7]

with diaphragms [7]

including an ion-exchange membrane in or on which electrode material is embedded [7]

Cells or assemblies of cells comprising at least one movable electrode, e.g. rotary electrodes; Assemblies of constructional parts thereof [7]

Liquid electrodes, e.g. mercury electrodes [7]

Cells or assemblies of cells comprising at least one electrode made of particles; Assemblies of constructional parts thereof [7]

Assemblies comprising a plurality of cells (assemblies of cells with movable electrodes C25B 9/12; assemblies of cells with electrodes made of particles C25B 9/16) [7]

of the filter-press type [7]

11/

Electrodes; Manufacture thereof not otherwise provided for [2]

11/

characterised by shape or form [2]

11/

perforated or foraminous [2]

11/

characterised by the material [2]

11/

by the catalytic materials used (catalysts in general B01J) [2]

11/

Noble metals [2]

11/

Electrodes based on barrier-type metals, e.g. titanium [2]

11/

Electrodes based on carbon (carbon masses in general C04B 35/52) [2]

11/

Impregnation of carbon electrodes (C25B 11/06 takes precedence) [2]

11/

Electrodes based on manganese dioxide or lead dioxide [2]

11/

Mercury or amalgam electrodes [2]

11/

(transferred to C25B 9/10)

13/

Diaphragms; Spacing elements [4]

13/

characterised by form or shape [2]

13/

characterised by the material [2]

13/

based on asbestos [2]

13/

based on organic materials [2]

15/

Operating or servicing of cells [2]

15/

Process control or regulation (controlling or regulating in general G05) [2]

15/

Regulation of the inter-electrode distance (working of metal by the action of a high concentration of electric current B23H) [2]

15/

Detection or inhibition of short circuits in the cell [2]

15/

Supplying or removing reactants or electrolytes; Regeneration of electrolytes [2]