Intravaginal ring comprising polyurethane composition for drug delivery
US9393311B2 · kind B2 · utility
0Cited by
2References
8Claims
0Family size
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Key dates
| Filing date | Nov 15, 2011 |
| Grant date | Jul 19, 2016 |
| Priority date | — |
| Expiry date | Jul 28, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/73
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention is directed to an intravaginal drug delivery device comprising at least one pharmaceutically active substance, and a polyurethane copolymer, wherein the copolymer has the structure according to formula (I):The invention is further directed to administering one or more pharmaceutically active substances to a patient in need thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.