Top IPC subclasses
1
|
C03C
|
1
|
chemical composition of glasses, glazes, or vitreous enamelssurface treatment of glasssurface treatm
|
2
|
C23C
|
1
|
Coating 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
|