Biodegradable microbicidal vaginal barrier device
US6572875B2 · kind B2 · utility
1Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2001 |
| Grant date | Jun 3, 2003 |
| Priority date | — |
| Expiry date | Sep 28, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/122
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An intravaginal bio-erodible microbicidal barrier device. The device comprises (a) at least one micronized compound selected from the group consisting of cellulose acetate phthalate and hydroxypropylmethylcellulose phthalate, and (b) at least one water soluble or water dispersible cellulose compound selected from the group consisting of hydroxypropylmethylcellulose, methylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxyethylmethylcellulose, hydroxyethylethylcellulose and hydroxypropylethylcellulose. The device is prepared by a combination of foaming, freezing and freeze-drying processes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.