Patent ID: 7144597
Filing Date: 2006-12-05
Classification: A61K,B05B

Abstract:
1. An apparatus for electrostatically applying a powder material to a solid dosage form having a front face and a rear face, the apparatus comprising: a source of charged powder material; a support assembly for supporting the solid dosage form with the front face in the vicinity of the source of charged powder material and facing the source of charged powder material, the support assembly comprising an electrically conducting member in the vicinity of the rear face of the solid dosage form and an electrically conducting shield disposed around the solid dosage form between the front face and the rear face of the solid dosage form; and means for creating a potential difference between the source of charged powder material and the electrically conducting member and for maintaining the electrically conducting shield at a potential more similar to that of the source of powder material than to that of the electrically conducting member.