Sustained release formulations of insect repellent
US5221535A · kind A · utility
26Cited by
57References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 23, 1992 |
| Grant date | Jun 22, 1993 |
| Priority date | — |
| Expiry date | Jan 23, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/5015
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A microsuspension system containing insect repellent is disclosed that includes lipospheres, that are solid, water-insoluble microparticles that have a layer of a phospholipid embedded on their surface. The core of the liposphere is a solid insect repellent, or an insect repellent dispersed in an solid vehicle, such as a wax. Insect repellents include compounds that repel insects, are insecticidal, or regulate or inhibit insect growth on humans and other animals and plants. Insect repellent lipospheres provide controlled release of insect repellents while minimizing absorption through the skin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.