Method for inducing crystalline state transition in medicinal substance
US5811547A · kind A · utility
97Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 9, 1995 |
| Grant date | Sep 22, 1998 |
| Priority date | — |
| Expiry date | Jun 9, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/14
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
This invention has for its object to provide a method of inducing a transition in crystalline state of a crystallizable medicinal substance with great ease and improved efficiency and uniformity on a high production scale. According to the invention, an extruder is used for inducing a transition from one crystalline state (.DELTA.) to another crystalline state in a crystallizable medicinal substance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.