Patent 8998020 was granted and assigned to Shiseido on April, 2015 by the United States Patent and Trademark Office.
An inner container is to be installed inside an outer container, the inner container including a jointed portion configured to joint a jointing portion formed in the outer container to prevent the inner container from being separated from the outer container when the inner container is installed in the outer container; and a second engaging portion engaged with a first engaging portion formed in the outer container and configured to prevent the inner container from rotating relative to the outer container.