Patents by Inventor Benoit EMPRIN

Benoit EMPRIN has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Optical article having an interferential coating with an improved abrasion-resistance
    Patent number: 12092908
    Abstract: The invention relates to an optical article comprising a substrate having at least one main face successively coated with a layer comprising chromium, silicon and oxygen, a monolayer sub-layer having a thickness higher than or equal to 100 nm, a multilayer interferential coating comprising a stack of at least one high refractive index layer having a refractive index higher than 1.55 and at least one low refractive index layer having a refractive index of 1.55 or less, wherein the ratio (I) is higher than or equal to 1.5, and the optical article has a Bayer value determined in accordance with the ASTM F735-81 standard higher than or equal to 7.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: September 17, 2024
    Assignee: Essilor International
    Inventors: Benoit Emprin, Nicolas Maitre, Sébastien Chiarotto
  • Optical Article Having an Interferential Coating with an Improved Abrasion-Resistance
    Publication number: 20210397025
    Abstract: The invention relates to an optical article comprising a substrate having at least one main face successively coated with a layer comprising chromium, silicon and oxygen, a monolayer sub-layer having a thickness higher than or equal to 100 nm, a multilayer interferential coating comprising a stack of at least one high refractive index layer having a refractive index higher than 1.55 and at least one low refractive index layer having a refractive index of 1.55 or less, wherein the ratio (I) is higher than or equal to 1.5, and the optical article has a Bayer value determined in accordance with the ASTM F735-81 standard higher than or equal to 7.
    Type: Application
    Filed: October 17, 2019
    Publication date: December 23, 2021
    Inventors: Benoit EMPRIN, Nicolas MAITRE, Sébastien CHIAROTTO