MUMBAI, India, Oct. 5 -- Intellectual Property India has published a patent application (202644035347 A) filed by Nivarox-Far S. A. on March 24, 2026, for Coloured Barrel Spring.
Inventors include Villar, Ivan; Kissling, Gregory; and Juillet, Roger.
The application for the patent was published on October 02, 2026, under issue no. 40/2026.
Abstract: The invention relates to a barrel spring (1) comprising a substrate (4) coated with a layer (2) of Al2O3 and/or with a layer (3) of TiO2 with a total thickness for all of the layers less than or equal to 125 nm in order to obtain a colour by interference effect. Fig. 3
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