Isolation of ibuprofen from tablets
US5300301A · kind A · utility
3Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 2, 1992 |
| Grant date | Apr 5, 1994 |
| Priority date | — |
| Expiry date | Dec 2, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K31/19
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Ibuprofen is isolated from tablets or other solids by dissolving the ibuprofen in an alkane or cycloalkane solvent, filtering off undissolved solid, and stripping the solvent from the ibuprofen by evaporation or by recrystallization at low temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.