Polymeric diffusion matrix containing estrogens
US4438139A · kind A · utility
30Cited by
11References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 4, 1982 |
| Grant date | Mar 20, 1984 |
| Priority date | — |
| Expiry date | Jan 4, 2002 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K31/565
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A polymeric diffusion matrix for the sustained release, intravaginal administration of an estrogen is provided. The matrix consists of polyvinylalcohol, polyvinylpyrrolidone and a polar plasticizer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.