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AssigneeThe Swatch Group Research and Development Ltd
InventorsLoïc CURCHOD, Vladislav SPASSOV, Lucie TABARD, Marta FORNABAIO
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An external part including a substrate made of ceramic material on a surface of which extends a transparent inorganic protective coating, the protective coating being configured so as to have a refractive index substantially equal to that of the substrate in the visible range of the light spectrum, so that the external part has a colour substantially identical to the intrinsic colour of the substrate, the coating extending over a thickness chosen between 300 nm and 5 μm.
An external part, comprising a substrate made of ceramic material on a surface of which extends a transparent inorganic protective coating, said protective coating being configured so as to have a refractive index substantially equal to that of the substrate in the visible range of the light spectrum, so that the external part has a colour substantially identical to the intrinsic colour of the substrate, said coating extending over a thickness chosen between 300 nm and 5 μm.
A method for manufacturing an external part comprising the steps of:
Dependencies are inferred from the claim text.