DIFF Subgroup
C03C 25/66 Chemical treatment, e.g. leaching, acid or alkali treatment (dehydroxylation C03C25/64)
Introduced: January 2000
Title
Titles differ between systems:
IPC: Chemical treatment, e.g. leaching, acid or alkali treatment
CPC: Chemical treatment, e.g. leaching, acid or alkali treatment (dehydroxylation C03C25/64)
Full Title
Full titles differ between systems:
IPC:
Surface treatment of fibres or filaments made from glass, minerals or slags > Chemical treatment, e.g. leaching, acid or alkali treatment
CPC:
Surface treatment of fibres or filaments made from glass, minerals or slags > Chemical treatment, e.g. leaching, acid or alkali treatment (dehydroxylation C03C25/64)
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
IPC defines codes here since 2000.
Child Classifications
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