MUMBAI, India, June 30 -- Intellectual Property India has published a patent application (202544127414 A) filed by Nivarox-Far S. A. on December 16, 2025, for Horology Component Coloured By Interference Effect.
Inventors include Bailat, Julien; and Cusin, Pierre.
The application for the patent was published on June 26, 2026, under issue no. 26/2026.
Abstract: The invention relates to a horology component comprising a substrate (2), a first interference layer (4) in direct or indirect contact with the substrate (2) and a second interference layer (3) covering the first interference layer (4), said first interference layer (4) being characterised in that it has a thickness comprised between 3 nm and 250 nm and in that it is made of a first material that is transparent to the luminous spectrum in the visible range between 380 nm and 780 nm, with said first material having a refractive index n less than or equal to 2 over the entire said visible range, said second interference layer (3) being characterised in that it has a thickness comprised between 3 nm and 80 nm and in that it is made of a second material having a refractive index n and an absorption coefficient k respectively reaching a value greater than or equal to 3 and greater than or equal to 0.5, over at least part of said visible range. Fig. 2
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