Transdermal drug delivery system
US4820525A · kind A · utility
25Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 17, 1987 |
| Grant date | Apr 11, 1989 |
| Priority date | — |
| Expiry date | Sep 17, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/006
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention provides a transdermal/transmucosal pharmaceutical delivery system having an improved drug reservoir comprising a thin layer of foamed material made from high molecular weight polyethylene, the foamed material having a void volume of at lesat 20% per unit of surface area and a narrow pore size variation per unit of surface area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.