Sunscreen compositions
US6290938A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1998 |
| Grant date | Sep 18, 2001 |
| Priority date | — |
| Expiry date | Jul 30, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/52
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention relates to compositions suitable for use as sunscreens which comprise a UVA sunscreen active and a carrier suitable for application to the skin. These compositions are substantially free of benzylidene camphor derivatives and provide excellent stability, efficiency, and UV protection efficacy in a safe, economical and aesthetically appealing manner. The compositions have a Sunscreen Efficiency Index of at least about 1.75, a UVA Efficacy Value of at least about 0.5, a UVA Photostability Index of at least about 0.85, a UVB Photostability Index of at least about 0.85, and a Transparency Value of less than about 10. Methods of using the compositions are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.