Skin cosmetics
US5087446A · kind A · utility
77Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 30, 1990 |
| Grant date | Feb 11, 1992 |
| Priority date | — |
| Expiry date | Jan 30, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q19/02
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention provides cosmetics using a freeze-dried material which is obtained by freeze-drying an aqueous solution. The solution contains hyaluronic acid or sodium hyaluronate and magnesium-L-ascrbil phosphate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.