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CPC
COOPERATIVE PATENT CLASSIFICATION
C25D
PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR [2020-08]
WARNINGS

  • The following IPC groups are not in the CPC scheme. The subject matter for these IPC groups is classified in the following CPC groups:
    C25D2/00 covered by B23K 28/006
    C25D5/24 covered by C25D 5/34
    C25D5/26 covered by C25D 5/36
    C25D5/28 covered by C25D 5/38
    C25D5/30 covered by C25D 5/42, C25D 5/44
    C25D5/32 covered by C25D 5/46
    C25D19/00 covered by C25D 17/00
  • In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme.
C25D 1/00
Electroforming [2013-01]
C25D 1/003
.
{3D structures, e.g. superposed patterned layers} [2013-01]
C25D 1/006
.
{Nanostructures, e.g. using aluminium anodic oxidation templates [AAO]} [2015-10]
C25D 1/02
.
Tubes; Rings; Hollow bodies [2013-01]
C25D 1/04
.
Wires; Strips; Foils [2013-01]
C25D 1/06
.
Wholly-metallic mirrors [2013-01]
C25D 1/08
.
Perforated or foraminous objects, e.g. sieves (C25D 1/10 takes precedence) [2013-01]
C25D 1/10
.
Moulds; Masks; Masterforms [2020-08]
C25D 1/12
.
by electrophoresis [2020-08]
C25D 1/14
. .
of inorganic material [2013-01]
C25D 1/16
. . .
Metals [2013-01]
C25D 1/18
. .
of organic material [2013-01]
C25D 1/20
.
Separation of the formed objects from the electrodes {with no destruction of said electrodes} [2013-01]
C25D 1/22
. .
Separating compounds [2013-01]
C25D 3/00
Electroplating: Baths therefor [2013-01]
C25D 3/02
.
from solutions (C25D 5/34 - C25D 5/46 take precedence) [2016-05]
C25D 3/04
. .
of chromium [2013-01]
C25D 3/06
. . .
from solutions of trivalent chromium [2013-01]
C25D 3/08
. . .
Deposition of black chromium {, e.g. hexavalent chromium, CrVI} [2013-01]
C25D 3/10
. . .
characterised by the organic bath constituents used [2013-01]
C25D 3/12
. .
of nickel or cobalt [2020-08]
C25D 3/14
. . .
from baths containing acetylenic or heterocyclic compounds [2013-01]
C25D 3/16
. . . .
Acetylenic compounds [2013-01]
C25D 3/18
. . . .
Heterocyclic compounds [2013-01]
C25D 3/20
. .
of iron [2013-01]
C25D 3/22
. .
of zinc [2013-01]
C25D 3/24
. . .
from cyanide baths [2013-01]
C25D 3/26
. .
of cadmium [2013-01]
C25D 3/28
. . .
from cyanide baths [2013-01]
C25D 3/30
. .
of tin [2013-01]
C25D 3/32
. . .
characterised by the organic bath constituents used [2013-01]
C25D 3/34
. .
of lead [2013-01]
C25D 3/36
. . .
characterised by the organic bath constituents used [2013-01]
C25D 3/38
. .
of copper [2013-01]
C25D 3/40
. . .
from cyanide baths {, e.g. with Cu+} [2013-01]
C25D 3/42
. .
of light metals [2013-01]
C25D 3/44
. . .
Aluminium [2013-01]
C25D 3/46
. .
of silver [2013-01]
C25D 3/48
. .
of gold [2013-01]
C25D 3/50
. .
of platinum group metals [2013-01]
C25D 3/52
. . .
characterised by the organic bath constituents used [2013-01]
C25D 3/54
. .
of metals not provided for in groups C25D 3/04 - C25D 3/50 [2016-05]
C25D 3/56
. .
of alloys [2013-01]
C25D 3/562
. . .
{containing more than 50% by weight of iron or nickel or cobalt} [2020-08]
C25D 3/565
. . .
{containing more than 50% by weight of zinc} [2013-01]
C25D 3/567
. . .
{containing more than 50% by weight of platinum group metals} [2013-01]
C25D 3/58
. . .
containing more than 50% by weight of copper [2013-01]
C25D 3/60
. . .
containing more than 50% by weight of tin [2020-08]
C25D 3/62
. . .
containing more than 50% by weight of gold [2013-01]
C25D 3/64
. . .
containing more than 50% by weight of silver [2013-01]
C25D 3/66
.
from melts [2013-01]
C25D 3/665
. .
{from ionic liquids} [2020-05]
C25D 5/00
Electroplating characterised by the process; Pretreatment or after-treatment of workpieces [2020-08]
WARNING

C25D 5/003
.
{Electroplating using gases, e.g. pressure influence} [2020-08]
C25D 5/006
(Frozen)
.
{Electroplating with applied electromagnetic field, not locally, e.g. for plating magnetic layers} [2020-08]
WARNING

  • Group C25D 5/006 is no longer used for the classification of documents as of August 1, 2020.
    The content of this group is being reclassified into groups C25D 5/007, C25D 5/009, C25D 5/011, and C25D 5/013.
    All groups listed in this Warning should be considered in order to perform a complete search.
C25D 5/007
.
{Electroplating using magnetic fields, e.g. magnets} [2020-08]
WARNING

C25D 5/009
. .
{Deposition of ferromagnetic material} [2020-08]
WARNING

C25D 5/011
.
{Electroplating using electromagnetic wave irradiation (using locally applied electromagnetic radiation C25D 5/024)} [2020-08]
WARNING

C25D 5/013
. .
{Wavelengths other than ultra-violet [UV], visible or infra-red [IR], e.g. X-rays or microwaves} [2020-08]
WARNING

C25D 5/02
.
Electroplating of selected surface areas [2013-01]
C25D 5/022
. .
{using masking means} [2020-08]
WARNING

C25D 5/024
. .
{using locally applied electromagnetic radiation, e.g. lasers} [2016-08]
C25D 5/026
. .
{using locally applied jets of electrolyte} [2013-01]
C25D 5/028
. .
{one side electroplating, e.g. substrate conveyed in a bath with inhibited background plating} [2013-01]
C25D 5/04
.
Electroplating with moving electrodes [2013-01]
C25D 5/06
. .
Brush or pad plating [2020-08]
C25D 5/08
.
Electroplating with moving electrolyte e.g. jet electroplating {(using locally applied jets of electrolyte C25D 5/026)} [2020-08]
WARNING

C25D 5/10
.
Electroplating with more than one layer of the same or of different metals (for bearings C25D 7/10) [2020-08]
WARNING

C25D 5/12
. .
at least one layer being of nickel or chromium [2020-08]
WARNING

C25D 5/14
. . .
two or more layers being of nickel or chromium, e.g. duplex or triplex layers [2020-08]
WARNING

C25D 5/16
.
Electroplating with layers of varying thickness [2020-08]
WARNING

C25D 5/18
.
Electroplating using modulated, pulsed or reversing current [2020-08]
WARNING

C25D 5/20
.
Electroplating using ultrasonics {, vibrations} [2020-08]
WARNING

C25D 5/22
.
Electroplating combined with mechanical treatment during the deposition [2020-08]
WARNING

C25D 5/34
.
Pretreatment of metallic surfaces to be electroplated [2013-01]
C25D 5/36
. .
of iron or steel [2013-01]
C25D 5/38
. .
of refractory metals or nickel [2013-01]
C25D 5/40
. . .
Nickel; Chromium [2013-01]
C25D 5/42
. .
of light metals [2013-01]
C25D 5/44
. . .
Aluminium [2013-01]
C25D 5/46
. .
of actinides [2013-01]
C25D 5/48
.
After-treatment of electroplated surfaces [2013-01]
C25D 5/50
. .
by heat-treatment [2013-01]
C25D 5/505
. . .
{of electroplated tin coatings, e.g. by melting} [2013-01]
C25D 5/52
. .
by brightening or burnishing [2013-01]
C25D 5/54
.
Electroplating of non-metallic surfaces (C25D 7/12 takes precedence) [2020-08]
WARNING

C25D 5/56
. .
of plastics [2020-08]
WARNING

C25D 5/60
.
{Electroplating characterised by the structure or texture of the layers} [2020-08]
WARNING

C25D 5/605
. .
{Surface topography of the layers, e.g. rough, dendritic or nodular layers} [2020-08]
WARNING

C25D 5/611
. . .
{Smooth layers} [2020-08]
WARNING

C25D 5/615
. .
{Microstructure of the layers, e.g. mixed structure} [2020-08]
WARNING

C25D 5/617
. . .
{Crystalline layers} [2020-08]
WARNING

C25D 5/619
. . .
{Amorphous layers} [2020-08]
WARNING

C25D 5/623
. .
{Porosity of the layers} [2020-08]
WARNING

C25D 5/625
. .
{Discontinuous layers, e.g. microcracked layers} [2020-08]
WARNING

C25D 5/627
.
{Electroplating characterised by the visual appearance of the layers, e.g. colour, brightness or mat appearance} [2020-08]
WARNING

C25D 5/67
.
{Electroplating to repair workpiece} [2020-08]
WARNING

C25D 7/00
Electroplating characterised by the article coated [2020-08]
WARNING

C25D 7/001
.
{Magnets} [2020-05]
C25D 7/003
.
{Threaded pieces, e.g. bolts or nuts} [2020-08]
C25D 7/005
.
{Jewels; Clockworks; Coins} [2020-08]
WARNING

C25D 7/006
.
{Nanoparticles} [2013-01]
C25D 7/008
.
{Thermal barrier coatings} [2013-01]
C25D 7/02
.
Slide fasteners [2013-01]
C25D 7/04
.
Tubes; Rings; Hollow bodies [2013-01]
C25D 7/06
.
Wires; Strips; Foils [2013-01]
C25D 7/0607
. .
{Wires} [2013-01]
C25D 7/0614
. .
{Strips or foils} [2013-01]
C25D 7/0621
. . .
{In horizontal cells} [2013-01]
C25D 7/0628
. . .
{In vertical cells} [2013-01]
C25D 7/0635
. . .
{In radial cells} [2013-01]
C25D 7/0642
. . .
{Anodes} [2013-01]
C25D 7/065
. . .
{Diaphragms} [2013-01]
C25D 7/0657
. . .
{Conducting rolls} [2013-01]
C25D 7/0664
. . .
{Isolating rolls} [2013-01]
C25D 7/0671
. . .
{Selective plating} [2013-01]
C25D 7/0678
. . . .
{using masks} [2013-01]
C25D 7/0685
. . .
{Spraying of electrolyte} [2013-01]
C25D 7/0692
. . .
{Regulating the thickness of the coating} [2013-01]
C25D 7/08
.
Mirrors; Reflectors [2013-01]
C25D 7/10
.
Bearings [2013-01]
C25D 7/12
.
Semiconductors [2020-08]
WARNING

C25D 7/123
. .
{Semiconductors first coated with a seed layer or a conductive layer} [2020-08]
WARNING

C25D 7/126
. . .
{for solar cells} [2020-08]
WARNING

C25D 9/00
Electrolytic coating other than with metals (C25D 11/00, C25D 15/00 take precedence; electrophoretic coating C25D 13/00) [2013-01]
C25D 9/02
.
with organic materials [2013-01]
C25D 9/04
.
with inorganic materials [2013-01]
C25D 9/06
. .
by anodic processes [2013-01]
C25D 9/08
. .
by cathodic processes [2013-01]
C25D 9/10
. . .
on iron or steel [2013-01]
C25D 9/12
. . .
on light metals [2013-01]
C25D 11/00
Electrolytic coating by surface reaction, i.e. forming conversion layers [2013-01]
C25D 11/005
.
{Apparatus specially adapted for electrolytic conversion coating (apparatus in general for electrolytic coating C25D 17/00)} [2020-05]
C25D 11/02
.
Anodisation [2013-01]
C25D 11/022
. .
{Anodisation on selected surface areas} [2020-08]
WARNING

C25D 11/024
. .
{Anodisation under pulsed or modulated current or potential} [2013-01]
C25D 11/026
. .
{Anodisation with spark discharge} [2015-10]
C25D 11/028
. .
{Borodising,, i.e. borides formed electrochemically} [2013-01]
C25D 11/04
. .
of aluminium or alloys based thereon [2013-01]
C25D 11/045
. . .
{for forming AAO templates} [2013-01]
C25D 11/06
. . .
characterised by the electrolytes used [2013-01]
C25D 11/08
. . . .
containing inorganic acids [2013-01]
C25D 11/10
. . . .
containing organic acids [2013-01]
C25D 11/12
. . .
Anodising more than once, e.g. in different baths [2013-01]
C25D 11/14
. . .
Producing integrally coloured layers [2013-01]
C25D 11/16
. . .
Pretreatment {, e.g. desmutting} [2013-01]
C25D 11/18
. . .
After-treatment, e.g. pore-sealing [2016-05]
C25D 11/20
. . . .
Electrolytic after-treatment [2013-01]
C25D 11/22
. . . . .
for colouring layers [2013-01]
C25D 11/24
. . . .
Chemical after-treatment [2013-01]
C25D 11/243
. . . . .
{using organic dyestuffs} [2013-01]
C25D 11/246
. . . . .
{for sealing layers} [2013-01]
C25D 11/26
. .
of refractory metals or alloys based thereon [2013-01]
C25D 11/28
. .
of actinides or alloys based thereon [2013-01]
C25D 11/30
. .
of magnesium or alloys based thereon [2013-01]
C25D 11/32
. .
of semiconducting materials [2013-01]
C25D 11/34
. .
of metals or alloys not provided for in groups C25D 11/04 - C25D 11/32 [2016-05]
C25D 11/36
.
Phosphatising [2020-08]
C25D 11/38
.
Chromatising [2013-01]
C25D 13/00
Electrophoretic coating characterised by the process (C25D 15/00 takes precedence; compositions for electrophoretic coating C09D 5/44) [2016-05]
C25D 13/02
.
with inorganic material [2013-01]
C25D 13/04
.
with organic material [2013-01]
C25D 13/06
. .
with polymers {(not used, see C09D 5/44)} [2013-01]
C25D 13/08
. . .
by polymerisation in situ of monomeric materials {(not used, see C09D 5/4476)} [2013-01]
C25D 13/10
.
characterised by the additives used {(not used, see C09D 5/448)} [2013-01]
C25D 13/12
.
characterised by the article coated [2013-01]
C25D 13/14
. .
Tubes; Rings; Hollow bodies [2013-01]
C25D 13/16
. .
Wires; Strips; Foils [2013-01]
C25D 13/18
.
using modulated, pulsed, or reversing current [2013-01]
C25D 13/20
.
Pretreatment [2017-08]
C25D 13/22
.
Servicing or operating {apparatus or multistep processes} [2013-01]
C25D 13/24
. .
Regeneration of process liquids [2020-08]
WARNING

C25D 15/00
Electrolytic or electrophoretic production of coatings containing embedded materials, e.g. particles, whiskers, wires [2015-10]
C25D 15/02
.
Combined electrolytic and electrophoretic processes {with charged materials} [2013-01]
C25D 17/00
Constructional parts, or assemblies thereof, of cells for electrolytic coating [2020-08]
C25D 17/001
.
{Apparatus specially adapted for electrolytic coating of wafers, e.g. semiconductors or solar cells} [2020-08]
C25D 17/002
.
{Cell separation, e.g. membranes, diaphragms} [2013-01]
C25D 17/004
.
{Sealing devices} [2013-01]
C25D 17/005
.
{Contacting devices} [2013-01]
C25D 17/007
.
{Current directing devices} [2020-08]
C25D 17/008
.
{Current shielding devices} [2020-08]
C25D 17/02
.
Tanks; Installations therefor [2013-01]
C25D 17/04
. .
External supporting frames or structures [2013-01]
C25D 17/06
.
Suspending or supporting devices for articles to be coated [2013-01]
C25D 17/08
. .
{Supporting} racks {, i.e. not for suspending} [2016-08]
C25D 17/10
.
Electrodes {, e.g. composition, counter electrode} [2016-08]
C25D 17/12
. .
Shape or form (C25D 17/14 takes precedence) [2013-01]
C25D 17/14
. .
for pad-plating [2013-01]
C25D 17/16
.
Apparatus for electrolytic coating of small objects in bulk [2013-01]
C25D 17/18
. .
having closed containers [2013-01]
C25D 17/20
. . .
Horizontal barrels [2013-01]
C25D 17/22
. .
having open containers [2013-01]
C25D 17/24
. . .
Oblique barrels [2013-01]
C25D 17/26
. . .
Oscillating baskets [2013-01]
C25D 17/28
. .
with means for moving the objects individually through the apparatus during treatment [2013-01]
C25D 21/00
Processes for servicing or operating cells for electrolytic coating [2013-01]
C25D 21/02
.
Heating or cooling [2013-01]
C25D 21/04
.
Removal of gases or vapours {; Gas or pressure control} [2020-08]
C25D 21/06
.
Filtering {particles other than ions (filtering ions C25D 21/22)} [2013-01]
C25D 21/08
.
Rinsing [2013-01]
C25D 21/10
.
Agitating of electrolytes; Moving of racks [2013-01]
C25D 21/11
.
Use of protective surface layers on electrolytic baths [2013-01]
C25D 21/12
.
Process control or regulation (controlling or regulating in general G05) [2013-01]
C25D 21/14
. .
Controlled addition of electrolyte components [2013-01]
C25D 21/16
.
Regeneration of process solutions [2020-08]
WARNING

  • Groups C25D 21/16 - C25D 21/22 are incomplete pending reclassification of documents from group C25D 13/24.
    All groups listed in this Warning should be considered in order to perform a complete search.
C25D 21/18
. .
of electrolytes (C25D 21/22 takes precedence) [2013-01]
C25D 21/20
. .
of rinse-solutions (C25D 21/22 takes precedence) [2013-01]
C25D 21/22
. .
by ion-exchange [2013-01]