Polymeric diffusion matrix
US4466953A · kind A · utility
43Cited by
9References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1982 |
| Grant date | Aug 21, 1984 |
| Priority date | — |
| Expiry date | Sep 30, 2002 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K31/565
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A polymeric diffusion matrix is provided comprising from about 2 to about 60% glycerol, from about 2 to about 15% polyvinylalcohol, from about 2 to about 10% water soluble polymer with hydration sites which in combination with the remaining ingredients yields a matrix capable of sustained release of a drug dispersed therein, and the balance water, the percentages being by weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.