Formula and preparation method of an improved ointment for treating burns and scalds
US6468553B1 · kind B1 · utility
2Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 3, 2000 |
| Grant date | Oct 22, 2002 |
| Priority date | — |
| Expiry date | Aug 3, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K47/44
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention discloses an extract containing puccoon and Chinese angelica, and a formula and preparation method of an ointment containing the extract. The extract is used for treating burns and scalds and is characterized by superior shelf-life. The puccoon and Chinese angelica are extracted with an organic solvent having a polarity of between 0.35 and 0.95, which are then filtrated, concentrated and mixed with a physiologically acceptable carrier or excipient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.