Patent 9260684 was granted and assigned to STEMCELL Technologies on February, 2016 by the United States Patent and Trademark Office.
A cell culture device comprises a well. A plurality of microwells are within the well, and a first common fluid volume is within the well above the microwells. A set of sub-microwells are within each microwell, and a second common fluid volume is within each microwell above the set of sub-microwells.