Hydroxyphenyl naphthotriazoles as polymerizable blockers of high energy light
US10975040B2 · kind B2 · utility
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Key dates
| Filing date | Nov 15, 2019 |
| Grant date | Apr 13, 2021 |
| Priority date | — |
| Expiry date | Nov 15, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/043
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Described are high energy light blocking compounds and ophthalmic devices containing the compounds. In particular, described are hydroxyphenyl naphthotriazole structures with polymerizable functionality that block high energy light and are visibly transparent. The hydroxyphenyl naphthotriazole structures can be incorporated into ophthalmic devices, such as hydrogel contact lenses, to protect eyes from high energy light radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.