Sunscreen with coated microfine particles
US5609852A · kind A · utility
20Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1994 |
| Grant date | Mar 11, 1997 |
| Priority date | — |
| Expiry date | Nov 16, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/80
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The preparation of metal oxide particles having a dye lake precipitated onto their surface in a dye lake:metal oxide ratio of between 10:90 and 80:20 and the use of such particles in cosmetic and toiletry formulations are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.