Process for making a film having a substantially uniform distribution of components
US8900497B2 · kind B2 · utility
33Cited by
432References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 23, 2013 |
| Grant date | Dec 2, 2014 |
| Priority date | — |
| Expiry date | Aug 23, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF26B13/104
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to the film products and methods of their preparation that demonstrate a non-self-aggregating uniform heterogeneity. Desirably, the films disintegrate in water and may be formed by a controlled drying process, or other process that maintains the required uniformity of the film. The films contain a polymer component, which includes polyethylene oxide optionally blended with hydrophilic cellulosic polymers. Desirably, the films also contain a pharmaceutical and/or cosmetic active agent with no more than a 10% variance of the active agent pharmaceutical and/or cosmetic active agent per unit area of the film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.