A sterilized article is within the interior of a diffusion-restricted container. The container substantially prevents entry of microorganisms into the interior thereof. The container has at least one communication port which permits entry of gas and/or vapor into the interior, but prevents entry of microorganisms...http://www.google.com/patents/US6174502?utm_source=gb-gplus-sharePatent US6174502 - Sterilized article within diffusion-restricted containers
