Patent 7841338 was granted and assigned to Boehringer Ingelheim on November, 2010 by the United States Patent and Trademark Office.
A dispensing device for dispensing powder as a spray is disclosed. The dispensing device comprises a duct through which the powder is dispensable by gas pressure for de-agglomerating the powder. The duct is angled by at least about 90 degrees at a diversion portion and/or diverted into two opposite directions at a fork portion so that the powder is impacted on to or sheared by a solid surface for powder de-agglomeration.