MUMBAI, India, July 5 -- Intellectual Property India has published a patent application (202517055790 A) filed by Essilor International, Charenton-le-Pont, France, on June 10, for 'method of curing a polythiourethane based substrate tolerant to water.'
Inventor(s) include Fromentin, Pierre; and Yuktanan, Pimchaya.
The application for the patent was published on July 4, under issue no. 27/2025.
According to the abstract released by the Intellectual Property India: "The invention relates to a method of curing a polythiourethane based transparent casted substrate from at least one pre-polymer, comprising providing a first component A comprising a polythiourethane pre-polymer A1 having isocyanate or isothiocyanate end groups of formula - NCX...