CPC Subgroup
C03C 25/60 by diffusing ions or metals into the surface
Full Title
Surface treatment of fibres or filaments made from glass, minerals or slags > by diffusing ions or metals into the surface
3 direct subcodes
Child Classifications
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- C03C 25/601 in the liquid phase, e.g. using solutions or molten salts
- C03C 25/607 in the gaseous phase
- C03C 25/608 in the solid phase, e.g. using pastes or powders