Micro- or nanoparticular vesicles comprising crosslinked hyaluronic acid, compositions comprising the same and method for their use in skin care
US10959934B2 · kind B2 · utility
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3References
17Claims
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Key dates
| Filing date | Jun 26, 2019 |
| Grant date | Mar 30, 2021 |
| Priority date | — |
| Expiry date | Jun 26, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q19/08
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A micro- or nanoparticular vesicle comprises at least a crosslinked hyaluronic acid (HA), wherein the crosslinked hyaluronic acid is crosslinked by a chemical crosslinking agent, and wherein the degree of modification of said crosslinked hyaluronic acid with said chemical crosslinking agent is less than 1.9 mole %. Also disclosed are a method of manufacturing such vesicles, compositions comprising such vesicles and their uses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.