Particle size reduction of an antimuscarinic compound
US9889094B2 · kind B2 · utility
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12Claims
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Key dates
| Filing date | Jun 10, 2016 |
| Grant date | Feb 13, 2018 |
| Priority date | — |
| Expiry date | Jun 10, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P11/08
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A stable crystalline micronized particulate of a glycopyrronium salt may be prepared by suspending the drug in a water-immiscible anti-solvent in which the drug has little or no solubility and micronizing the suspension. The resulting drug particles are physically stable with regard to agglomeration and/or aggregation on storage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.