UV absorbing ocular lens
US12178938B2 · kind B2 · utility
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5References
18Claims
0Family size
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Key dates
| Filing date | Dec 10, 2019 |
| Grant date | Dec 31, 2024 |
| Priority date | — |
| Expiry date | Mar 16, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/022
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Ocular lenses having UV absorbing properties are disclosed. The ocular lens comprises a hydrogel polymer comprising polymerised residues derived from a polymerisable UV absorber of formula (I): U-L-Py (I) wherein: U is a UV absorbing moiety; L is a hydrophilic non-polyalkylene glycol linker comprising an anionic, a zwitterionic or a saccharide moiety; and Py is an ethylenically unsaturated polymerisable moiety.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.