A beverage filter cartridge comprises an outer container with an access opening. A filter element is received in and configured and arranged to subdivide the interior of the container into first and second chambers. A beverage medium is stored in the first chamber. A lid closes the access opening. The...http://www.google.com/patents/US6607762?utm_source=gb-gplus-sharePatent US6607762 - Disposable single serve beverage filter cartridge
