CPC Subgroup Additional Only
H01J 2237/338 Changing chemical properties of treated surfaces
Full Title
Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging > Processing objects by plasma generation > characterised by the type of processing > Changing chemical properties of treated surfaces
3 direct subcodes
Child Classifications
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- H01J 2237/3382 Polymerising
- H01J 2237/3385 Carburising
- H01J 2237/3387 Nitriding