• All sections
• C - Chemistrymetallurgy
• C23C - Coating metallic materialcoating material with metallic materialsurface treatment of metallic material by diffusion into the surface, by chemical conversion or substitutioncoating by vacuum evaporation, by sputtering, by ion implantation or by chemical vapour deposition, in general
• C23C 4/02 - Pretreatment of the material to be coated, e.g. for coating on selected surface areas

Patent holdings for IPC class C23C 4/02

Total number of patents in this class: 642

10-year publication summary

Principal owners for this class