IPC 6 English version
 
Class C23

SECTION C– CHEMISTRY; METALLURGY

C 23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL (by metallising textiles D 06 M 11/83; decorating textiles by locally metallising D 06 Q 1/04); CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (for specific applications, see the relevant places, e.g. for manufacturing resistors H 01 C 17/06); INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL (treating metal surfaces or coating of metals by electrolysis or electrophoresis C 25 D, C 25 F) [2]

 Note

 In this class, the following expression is used with the meaning incicated:

 –"metallic material" covers:

 (a)metals; [4]

 (b)alloys (attention is drawn to the Note following the title of subclass C 22 C).

C 23 CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (applying liquids or other fluent materials to surfaces in general B 05; making metal-coated products by extrusion B 21 C 23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B 21 D 39/00, B 23 K; working of metal by the action of a high concentration of electric current on a workpiece using an electrode B 23 H; metallising of glass C 03 C; metallising mortars, concrete, artificial stone, ceramics or natural stone C 04 B 41/00; paints, varnishes, laquers C 09 D; enamelling of, or applying a vitreous layer to, metals C 23 D; inhibiting corrosion of metallic material or incrustation in general C 23 F; single-crystal film growth C 30 B; manufacture of semiconductor devices H 01 L; manufacture of printed circuits H 05 K) [4]

C 23 DENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS (chemical composition of the enamels C 03 C)

C 23 FNON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACES (working of metal by electro-erosion B 23 H; desurfacing by applying flames B 23 K 7/00; working metal by laser beam B 23 K 26/00; producing decorative effects by removing surface-material, e.g. by engraving, by etching, B 44 C 1/22; electrolytic etching or polishing C 25 F); INHIBITING CORROSION OF METALLIC MATERIAL; INHIBITING INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C 23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C 21 D OR C 22 F OR CLASS C 25 (inhibition or prevention of corrosion or incrustation during processing of hydrocarbons C 10 G 7/10, C 10 G 9/16, C 10 G 75/00) [4]

C 23 GCLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS (polishing compositions C 09 G; detergents in general C 11 D)