Cosmetic preparation containing chitosan
US5057542A · kind A · utility
11Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1989 |
| Grant date | Oct 15, 1991 |
| Priority date | — |
| Expiry date | Oct 30, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/524
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Chitosan in a form of a polymer having a molecular weight of from 3,000 to 700,000 is incorporated into a cosmetic preparation in an amount effective for inhibiting growth of microorganisms in the cosmetic preparation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.