Biodegradable polymer microsphere compositions for parenteral administration
US10874612B2 · kind B2 · utility
2Cited by
5References
16Claims
0Family size
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Key dates
| Filing date | Oct 26, 2018 |
| Grant date | Dec 29, 2020 |
| Priority date | — |
| Expiry date | Feb 7, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/19
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Novel microsphere compositions for use in parenteral formulations are provided. The microspheres comprise a biodegradable polymer of a molecular weight greater than 10,000 daltons, an active therapeutic agent, and a cellulose-derived material such as ethyl cellulose, carboxymethyl cellulose, hydroxypropylmethyl cellulose, or sodium carboxymethyl cellulose. The microsphere compositions decreased deviation in mean microsphere diameter, improved drug entrapment, and improved microsphere stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.