Patents by Inventor Thomas D. BROADBENT

Thomas D. BROADBENT 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).

  • ELECTROCHROMIC COMPOUNDS AND OPTICAL ARTICLES CONTAINING THEM
    Publication number: 20240052235
    Abstract: The invention relates to a group of novel electrochromic compounds. More specifically, it relates to benzazoles and condensed azole compounds substituted with one or several pyridinium rings and the use of these compounds as a variable transmittance medium for the manufacture of an optical article, such as an ophthalmic lens.
    Type: Application
    Filed: December 14, 2021
    Publication date: February 15, 2024
    Applicant: Essilor International
    Inventors: Claudine BIVER, Fabien BERIT-DEBAT, Samuel ARCHAMBEAU, Stuart AIKEN, Georgina K. ARMITAGE, Thomas D. BROADBENT, Daniel L. CROSSLEY, Christopher D. GABBUTT, Bernard Mark HERON