A cartridge containing one or more beverage ingredients and being formed from substantially air- and water-impermeable materials, the cartridge comprising an outer member defining a storage chamber in which is stored the one or more beverage ingredients, an inner member having a discharge spout forming...http://www.google.com/patents/US7308851?utm_source=gb-gplus-sharePatent US7308851 - Cartridge for the preparation of beverages and method of manufacturing a cartridge
Cartridge for the preparation of beverages and method of manufacturing a ...
