Patent ID: 9393202
Filing Date: 2016-07-19
CPC Classification: A61K,A61P

Claim Text:
1. A process for preparing micronized particles of a pharmaceutically acceptable salt of glycopyrronium, said process comprising: feeding an anti-solvent, which is a water-immiscible hydrocarbon or derivative thereof which is liquid at room temperature and pressure, and has a dielectric constant lower than 15 and a density of 1.3 to 2 g/cm suspending particles of the glycopyrronium salt in said anti-solvent, to obtain suspended particles; micronizing said suspended particles at a pressure equal to or lower than 200 kPa, to obtain micronized particle; and optionally, drying said micronized particles, whereby at least 90% of said micronized particles have a diameter of less than 10 microns.