A cartridge for use in a beverage preparation machine, the cartridge containing one or more beverage ingredients and being formed from substantially air- and water-impermeable materials, the cartridge comprising an inlet for the introduction of an aqueous medium into the cartridge and an outlet for discharge...http://www.google.de/patents/US8168247?utm_source=gb-gplus-sharePatent US8168247 - Cartridge and method for the preparation of beverages
