Hydrogel compositions and drug delivery systems comprising the same
US10398647B2 · kind B2 · utility
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21Claims
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Key dates
| Filing date | Oct 20, 2017 |
| Grant date | Sep 3, 2019 |
| Priority date | — |
| Expiry date | Oct 20, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07K2317/94
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A hydrogel composition is provided. The hydrogel composition includes polyglutamic acid (PGA) containing maleimide groups, and polyethylene glycol (PEG) containing terminal thiol groups, wherein the hydrogel composition has a pH value ranging from 4.0 to 6.5. A drug delivery system is also provided. The drug delivery system includes the above-mentioned hydrogel composition, and a pharmaceutically active ingredient encapsulated in the hydrogel composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.