A drug delivery device includes (a) a substantially moisture vapor permeable, liquid impermeable, flexible thermoplastic backing layer, (b) a moisture vapor permeable, flexible, oleophilic thermoplastic resin foam layer, (c) a pressure sensitive adhesive layer, and (d) a drug reservoir containing at...http://www.google.com.au/patents/US6277401?utm_source=gb-gplus-sharePatent US6277401 - Drug delivery device
