Patent ID: 7279322
Filing Date: 2007-10-09
Classification: A61K,B01J,B05B,C12M,C12N

Abstract:
1. An apparatus for coating particles, the apparatus comprising: a source comprising at least one suspension, wherein the source comprising the at least one suspension comprises at least particles and coating material; a capillary tube electrode, wherein the capillary tube electrode includes a capillary tube having a first open end and a second open end, the capillary tube operatively connected to the source to receive a flow of at least the suspension at the first open end thereof; and an electrode isolated from but positioned in proximity to the second open end of the capillary tube, wherein a nonuniform electrical field is created between the capillary tube electrode and the electrode isolated therefrom such that a spray of microdroplets suspending at least the particles is provided from the second end of the capillary tube, and further wherein the particles are coated with at least a portion of the coating material as the microdroplet evaporates.