Imidazolium zwitterion polymerizable compounds and ophthalmic devices incorporating them
US12180318B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | May 11, 2021 |
| Grant date | Dec 31, 2024 |
| Priority date | — |
| Expiry date | Apr 24, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/043
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Provided are imidazolium zwitterion polymerizable compounds and their applications in ophthalmic devices and packaging solutions. The zwitterionic polymerizable compounds are of formula I:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.