Patch containing fentanyl for mucous membrane of oral cavity
US7815932B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2004 |
| Grant date | Oct 19, 2010 |
| Priority date | — |
| Expiry date | Jul 10, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P25/04
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
To provide a patch containing fentanyl for mucous membrane of the oral cavity (oral transmucosal fentanyl), which rapidly increases the serum concentration of the drug, is easy in handling and is superior in safety. The patch can be prepared by laminating on one side of a drug layer which contains fentanyl or its salt as an active ingredient, methyl vinyl ether-maleic anhydride copolymer as an adhesive, and at least one substance selected from the group consisting of hydroxypropylcellulose, hydroxypropylmethylcellulose and hydroxyethylcellulose as a thickener, a support layer hardly soluble or insoluble in water, and a backing in this order.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.