Preservative-free contact lens treating solution comprising hyaluronic acid and erythritol
US12239658B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Mar 10, 2022 |
| Grant date | Mar 4, 2025 |
| Priority date | — |
| Expiry date | Aug 13, 2043 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L12/08
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A preservative-free contact lens treating solution includes (a) about 0.005 to about 2 wt. %, based on the total weight of the preservative-free contact lens treating solution, of hyaluronic acid or a salt thereof; (b) about 0.01 to about 1 wt. %, based on the total weight of the preservative-free contact lens treating solution, of erythritol; (c) one or more nonionic surfactants; (d) sodium chloride, potassium chloride or any combination thereof; and (e) one or more buffers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.