The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 10, 2008
Filed:
Dec. 21, 2001
David Hoover Feather, San Diego, CA (US);
Douglas Howard Nelson, Carlsbad, CA (US);
David Hoover Feather, San Diego, CA (US);
Douglas Howard Nelson, Carlsbad, CA (US);
Phoqus Pharmaceuticals Limited, West Malling, Kent, GB;
Abstract
A method of electrostatically applying a powder material to a solid dosage form comprises the following steps: applying a bias voltage to generate an electric field between a source () of the powder material and the solid dosage form (); applying an electrostatically charged powder material to the solid dosage form (), the powder material being driven onto the solid dosage form () by the interaction of the electric field with the charged powder material, an the presence of the charged powder material on the solid dosage form serving to build up an electric charge on the solid dosage form () and thereby reduce the electric field generated by the bias voltage between the source () of powder material and the solid dosage form (), and continuing the application of the electrostatically charged powder material to the solid dosage form () until the electric field between the source () of powder material and the solid dosage form is so small that the driving of the powder material by the electric field onto the solid dosage form () is substantially terminated.