Patent ID: 8881907

Claim:
A substrate storage container comprising: a container body for storing a substrate of approximately 450 mm in diameter, the container body being formed into a front open box having an open front; a bottom plate attached to a base plate of the container body; and a lid for opening and closing the open front of the container body, in which the container body is provided with a suspended portion to be held by a conveyance mechanism for conveyance of the container, wherein a gravity center position adjustment member is provided at a rear portion of the container body so as to prevent the container body from inclining toward the lid and to maintain a position of the center of gravity of the substrate storage container storing the substrate within a range of 40 mm from a center position of the substrate, and wherein the gravity center position adjustment member is a counterweight that is attached between a rear portion of the base plate and a rear portion of the bottom plate.