Patent ID: 11911868
Assignee: EBARA CORPORATION
Field: Machine tools (Mechanical engineering)
Classification: CPC B  H | IPC B  H

Claim 0:
1. A substrate processing apparatus comprising:
a polishing table to which a polishing pad for polishing a substrate is attachable;
a polishing head for holding and pressing the substrate against the polishing pad;
a retainer member disposed surrounding the polishing head;
a retainer member pressurization chamber disposed adjacent to the retainer member;
an arm for holding and turning the polishing head;
a slip out detector for detecting a slipout of the substrate from the polishing head based on a turning torque of the arm, and
a speed detector for detecting a turning speed of the arm,
wherein the slip out detector is configured to stop the detection of the slipout of the substrate from the polishing head based on the speed detected by the speed detector.