Transdermal patch
US5948433A · kind A · utility
266Cited by
10References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 21, 1997 |
| Grant date | Sep 7, 1999 |
| Priority date | — |
| Expiry date | Aug 21, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/7053
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Transdermal patches are disclosed, including a backing layer, a liner layer, and a monolithic adhesive and drug-containing layer between the backing layer and the liner layer. The drug-containing adhesive layer includes polyisobutylene, a plasticizer for the polyisobutylene in which the ratio of the plasticizer and the polyisobutylene is less than about 0.8 and at least 5% of a filler. The drug so utilized is moderately soluble in the plasticizer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.