Sustained-release fragrance delivery system
US7638477B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2005 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Oct 30, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q13/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention provides a method of producing a personal care product comprising combining a fragrance, a propellant and porous carrier particles, to produce a composition substantially free of pre-encapsulated fragrance particles, and containing the composition in a pressurized container. Also provided is a personal care product comprising a pressurized container and a composition contained therein, which includes a fragrance, a propellant and porous carrier particles, wherein the composition is substantially free pre-encapsulated fragrance particles. When the composition is released from the container, the propellant evaporates rapidly to produce a matrix, which incorporates the fragrance into the pores of the carrier, to produce a sustained-release fragrance delivery system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.