Patent ID: 9381154
Filing Date: 2016-07-05
CPC Classification: A61K,B33Y

Claim Text:
1. A method of forming a layer of at least a portion of a drug delivery device (DDD) comprising: providing a substrate; providing a first pharmaceutically compatible phase change ink comprising (a) a color agent, a dye, or a pigment and (b) one or more DDD components dissolved or dispersed therein, wherein the first pharmaceutically compatible phase change ink is a solid at room temperature and has a phase change temperature between 40 and 200° C. and wherein the one or more DDD components include one or more excipients selected from the group consisting of sugar alcohols, zinc stearate, tagatose, sucrose, raffinose, povidone, and triglycerides; heating the pharmaceutically compatible phase change ink above its phase change temperature to form a first fluid ink; ejecting, by one or more nozzles, the first fluid ink onto at least a portion of the surface of the substrate, where it solidifies to form a first layer on the substrate, providing an aqueous or solvent ink, the aqueous or solvent ink comprising one or more DDD components; and ejecting, by one or more nozzles, a portion of the aqueous or solvent ink onto at least a portion of the surface of the substrate and/or onto the first layer; and drying the ejected aqueous or solvent ink to form a second layer.