EXTERNAL PART FOR WATCHES OR JEWELLERY COMPRISING A COATING OF SATURATED INTRINSIC COLOUR AND METHOD FOR MANUFACTURING SAID EXTERNAL PART

• Main Authors: SPASSOV, Vladislav, TABARD, Lucie, FORNABAIO, Marta, CURCHOD, Loïc
• Format: Patent
• Language: English
• Published: 31.10.2024
• Subjects: APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING ORMAINTAINING CLOCKS OR WATCHES; BRACELETS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; COINS; DIFFUSION TREATMENT OF METALLIC MATERIAL; HABERDASHERY; HOROLOGY; HUMAN NECESSITIES; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; JEWELLERY; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; MECHANICALLY-DRIVEN CLOCKS OR WATCHES; METALLURGY; OTHER PERSONAL ADORNMENTS; PHYSICS; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS

A watch or jewellery external part, in which the external part includes a substrate on a surface of which extends a coating including a tantalum Ta based nitride or oxynitride having a thickness comprised between 300 nm and 10 μm and an intrinsic and saturated colour.