System for releasing encapsulated active ingredients
US7338928B2 · kind B2 · utility
28Cited by
15References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2004 |
| Grant date | Mar 4, 2008 |
| Priority date | — |
| Expiry date | Jan 6, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q19/10
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention relates to a controlled release system that can be incorporated in cosmetic, personal care, and household products to effectively encapsulate wide range of active ingredients and sensory markers and release them in response to moisture or over an extended period of time. The controlled release system of the present invention consists of oil absorbing polymer nanospheres coated with water sensitive surface active polymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.