Alcon has patented a hydrophilized polydiorganosiloxane vinylic crosslinker for silicone hydrogel contact lenses. The crosslinker includes specific siloxane units and (meth)acryloyl groups, with a molecular weight range of 3000-80,000 Daltons. The lenses are made from this innovative material, enhancing comfort and performance. GlobalData’s report on Alcon gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on Alcon, Prosthetic cardiac valves was a key innovation area identified from patents. Alcon's grant share as of February 2024 was 57%. Grant share is based on the ratio of number of grants to total number of patents.

A recently granted patent (Publication Number: US11926689B2) discloses a silicone hydrogel contact lens comprising a crosslinked polymeric material with specific units of a polydiorganosiloxane vinylic crosslinker. The patent claims various embodiments of the contact lens, including those with specific values for parameters like the ratio of certain components in the polymeric material and the presence of hydrophilic vinylic monomers. Additionally, the patent covers variations of the lens with siloxane-containing vinylic monomers and hydrophobic vinylic monomers, both with and without silicone. The patent also includes claims related to the use of non-silicone vinylic crosslinkers and UV-absorbing vinylic monomers in the crosslinked polymeric material.

The patent further details specific examples of siloxane-containing vinylic monomers, such as polydimethylsiloxane-containing vinylic monomers, and their variations. It also includes claims related to the use of hydrophobic vinylic monomers free of silicone in the crosslinked polymeric material. Additionally, the patent covers the incorporation of non-silicone vinylic crosslinkers in the material, along with specific examples of such crosslinkers. Furthermore, the patent extends to the inclusion of UV-absorbing vinylic monomers in the crosslinked polymeric material, with a range of specific compounds listed as examples. Overall, the patent provides a comprehensive overview of the composition and variations of silicone hydrogel contact lenses, offering a detailed insight into the innovative features and materials used in their production.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.