Disposable spermicide-releasing diaphragm
US4589880A · kind A · utility
41Cited by
24References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 14, 1983 |
| Grant date | May 20, 1986 |
| Priority date | — |
| Expiry date | Jul 14, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S424/14
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A disposable, spermicide-releasing intravaginal contraceptive barrier formed from a homogeneous blend mixture of a thermoplastic polymer, a water-soluble polymer and a spermicide which is released at a controlled rate sufficient to provide contraceptive action for a period of up to 48 hours and methods of making the same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.