MUMBAI, India, April 25 -- Intellectual Property India has published a patent application (202517033249 A) filed by Essilor International, Charenton le Pont, France, on April 4, for 'method of curing a polythiourethane based substrate with a salt catalyst.'
Inventor(s) include Soon Jia Mei; and Yuktanan Pimchaya.
The application for the patent was published on April 25, under issue no. 17/2025.
According to the abstract released by the Intellectual Property India: "The invention relates to a method of curing a polythiourethane based transparent casted substrate comprising providing a first component A comprising at least one polyisocyanate or polyisothiocyanate monomer A2 providing a second component B comprising a polythiourethane pre p...