CPC Subgroup
C03C 17/34 with at least two coatings having different compositions (C03C17/44 takes precedence)
Full Title
Surface treatment of glass, not in the form of fibres or filaments, by coating (optical coatings of optical elements G02B1/10) > with at least two coatings having different compositions (C03C17/44 takes precedence)
4 direct subcodes
Child Classifications
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- C03C 17/36 at least one coating being a metal
- C03C 17/42 at least one coating of an organic material and at least one non-metal coating