Therapeutic system containing an active substance for the application on the skin which contains at least two polymerous layers
US7279178B1 · kind B1 · utility
4Cited by
8References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 14, 2000 |
| Grant date | Oct 9, 2007 |
| Priority date | — |
| Expiry date | Mar 7, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2556/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Active substance-containing therapeutic system for application on the skin, comprising at least two polymer-containing layers, characterized in that the polymers used for the different layers differ in their glass transition temperature (see FIG. 1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.