A nozzle comprising a thin, flexible substantially planar polymeric film having a plurality of pores with structures allowing for generation of an aerosol at reduced extrusion pressure is disclosed. The pores can comprise at least two sections, or steps, in which the thickness of the membrane is reduced...http://www.google.fr/patents/US20040124185?utm_source=gb-gplus-shareBrevet US20040124185 - Pore structures for reduced pressure aerosolization
Pore structures for reduced pressure aerosolization
Numéro de demande: 10/733,072 Numéro de publication: US 2004/0124185 A1 Date de dépôt: 10 déc. 2003 Brevet délivré: US6855909 ( Date de délivrance 15 févr. 2005)
