Patent ID: 11866682
Assignee: CORNING INCORPORATED
Field: Biotechnology (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A culture chamber comprising:
a plurality of recesses, each recess formed of a bottom portion and an opening portion, wherein:
the bottom portion having a depth D1 comprises a hemispherical shape or a truncated cone shape,
the opening portion having a depth D2 is defined by a wall that surrounds an area from a boundary between the opening portion and the bottom portion to an end of each of the recesses, the wall comprising a taper angle of 1 degree to 20 degrees,
an equivalent diameter of the boundary is from 50 μm to 1 mm and a depth D from a bottom of the bottom portion to the end of each of the recesses is from 0.6 or more times to 3 or less times of the equivalent diameter, wherein the depth D equals D1+D2,
the wall defining the opening portion forms a surface continuous to the bottom portion, and an inclination of the surface continuous to the bottom portion changes at the boundary, and
wherein an area between two adjacent recesses is flat and a distance between the two recesses is in a range from 5 μm to 50 μm.