Patent ID: 7575761
Filing Date: 2009-08-18
Classification: A61K

Abstract:
1. A method for producing a powdered formulation, comprising: introducing an atomized formulation into a conditioning zone from an atomizer; separately introducing humid air into the conditioning zone from a humid air inlet configured to control a relative humidity range within the conditioning zone; controlling a first temperature range and the relative humidity range within the conditioning zone for a conditioning time sufficient to promote a crystalline state of a partially dried atomized formulation, wherein the first temperature range is from about 25° C. to about 50° C. and the relative humidity range is from about 10% to about 100%; transferring the partially dried atomized formulation into a second conditioning zone; introducing the partially dried atomized formulation into a drying zone; drying the partially dried atomized formulation to form crystallized dry particles within the drying zone; and collecting the crystallized dry particles of the powdered formulation, wherein the crystallized dry particles have a size within a range from about 0.5 microns MMD to about 10 microns MMD.