Patents by Inventor Philippe ROMAND

Philippe ROMAND 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 a reflective coating with high abrasion-resistance
    Patent number: 12345905
    Abstract: Disclosed is an optical article including a substrate having at least one main face coated with a reflective coating including 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, in which the thicknesses of the layers in the reflective coating have been optimized according to specific design rules in order to boost the abrasion resistance of the optical article.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: July 1, 2025
    Assignee: Essilor International
    Inventors: William Trottier-Lapointe, Alexis Theoden, Philippe Romand, Surin Maidam
  • OPTICAL ARTICLE HAVING A REFLECTIVE COATING WITH HIGH ABRASION-RESISTANCE
    Publication number: 20220066079
    Abstract: Disclosed is an optical article including a substrate having at least one main face coated with a reflective coating including 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, in which the thicknesses of the layers in the reflective coating have been optimized according to specific design rules in order to boost the abrasion resistance of the optical article.
    Type: Application
    Filed: December 18, 2019
    Publication date: March 3, 2022
    Inventors: William TROTTIER-LAPOINTE, Alexis THEODEN, Philippe ROMAND, Surin MAIDAM