Patent ID: 8203104

Claim:
A mounting table structure comprising: a mounting table, arranged in a processing chamber, for mounting a target object thereon to perform a specified heat treatment on the target object; and a hollow supporting column for supporting the mounting table, the supporting column being standing on a bottom portion of the processing chamber, wherein the mounting table includes: a heating plate including a heat-resistant material and a heater as an electric heat source embedded in the heat-resistant material; and a heating plate accommodating container made of a heat-resistant and corrosion-resistant material, the container including a container body with an opening for removably receiving the heating plate and a cover portion detachably attached to the opening of the container body, wherein the cover portion has a sidewall extending downwardly, so that the cover portion covers the container body such that the sidewall of the cover portion is overlapped with a sidewall of the container body, and wherein pin holes are formed at the sidewall of the cover portion and pin hole portions communicating with the pin holes are formed at the sidewall of the container body, and engaging pins are removably inserted into the pin holes and the pin hole portions.