Method for preventing crystal formation in a dispersion of a liquid in a matrix
US7169409B2 · kind B2 · utility
2Cited by
14References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2003 |
| Grant date | Jan 30, 2007 |
| Priority date | — |
| Expiry date | Oct 17, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2013/0296
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An improved method for the manufacture of transdermal drug delivery devices comprising liquid dispersions of a liquid in an aqueous or nonaqueous matrix is disclosed. More particularly, the invention relates to preventing the formation of a crystalline structure in such liquid dispersions by annealing films and laminates in-line immediately following film formation and/or lamination during the manufacture of these devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.