IPC 7 English version C25D-C25D 9/12

C25D-C25D00912

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 D

PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING (decorating textiles by metallising D06Q 1/04; manufacturing printed circuits by metal deposition H05K 3/18); JOINING WORKPIECES BY ELECTROLYSIS; APPARATUS THEREFOR [2,6]

Electroforming [2]

Tubes; Rings; Hollow bodies [2]

Wires; Strips; Foils [2]

Wholly-metallic mirrors [2]

Perforated or foraminous objects, e.g. sieves (C25D 1/10 takes precedence) [2]

Moulds; Masks; Masterforms [2]

by electrophoresis [2]

of inorganic material [2]

Metals [2]

of organic material [2]

Separation of the formed objects from the electrodes [2]

Separating compounds [2]

Joining workpieces by electrolysis [6]

Electroplating; Baths therefor [2]

from solutions (C25D 5/24 to C25D 5/32 take precedence) [2]

of chromium [2]

from solutions of trivalent chromium [2]

Deposition of black chromium [2]

characterised by the organic bath constituents used [2]

of nickel or cobalt [2]

from baths containing acetylenic or heterocyclic compounds [2]

Acetylenic compounds [2]

Heterocyclic compounds [2]

of iron [2]

of zinc [2]

from cyanide baths [2]

of cadmium [2]

from cyanide baths [2]

of tin [2]

characterised by the organic bath constituents used [2]

of lead [2]

characterised by the organic bath constituents used [2]

of copper [2]

from cyanide baths [2]

of light metals [2]

Aluminium [2]

of silver [2]

of gold [2]

of platinum group metals [2]

characterised by the organic bath constituents used [2]

of metals not provided for in groups C25D 3/04 to C25D 3/50 [2]

of alloys [2]

containing more than 50% by weight of copper [2]

containing more than 50% by weight of tin [2]

containing more than 50% by weight of gold [2]

containing more than 50% by weight of silver [2]

from melts [2]

Electroplating characterised by the process; Pretreatment or after-treatment of workpieces [2]

Electroplating of selected surface areas [2]

Electroplating with moving electrodes [2]

Brush or pad plating [2]

Electroplating with moving electrolyte, e.g. jet electroplating [2]

Electroplating with more than one layer of the same or of different metals (for bearings C25D 7/10) [2]

at least one layer being of nickel or chromium [2]

two or more layers being of nickel or chromium, e.g. duplex or triplex layers [2]

Electroplating with layers of varying thickness [2]

Electroplating using modulated, pulsed or reversing current [2]

Electroplating using ultrasonics [2]

Electroplating combined with mechanical treatment during the deposition [2]

Electroplating of metal surfaces to which a coating cannot readily be applied (C25D 5/34 takes precedence) [2]

of iron or steel surfaces [2]

of surfaces of refractory metals [2]

of surfaces of light metals [2]

of surfaces of actinides [2]

Pretreatment of metallic surfaces to be electroplated [2]

of iron or steel [2]

of refractory metals or nickel [2]

Nickel; Chromium [2]

of light metals [2]

Aluminium [2]

of actinides [2]

After-treatment of electroplated surfaces [2]

by heat-treatment [2]

by brightening or burnishing [2]

Electroplating of non-metallic surfaces (C25D 7/12 takes precedence) [2]

of plastics [2]

Electroplating characterised by the article coated [2]

Slide fasteners [2]

Tubes; Rings; Hollow bodies [2]

Wires; Strips; Foils [2]

Mirrors; Reflectors [2]

Bearings [2]

Semiconductors [2]

Electrolytic coating other than with metals (C25D 11/00, C25D 15/00 take precedence; electrophoretic coating C25D 13/00) [2]

with organic materials [2]

with inorganic materials [2]

by anodic processes [2]

by cathodic processes [2]

on iron or steel [2]

on light metals [2]

C25D 11/00 - C25D 21/22