Patent ID: 11931854
Assignee: APPLIED MATERIALS, INC.
Field: Machine tools (Mechanical engineering)
Classification: CPC B  H | IPC B  H

Claim 11:
12. The system of claim 11, wherein the first duration T1 and the second duration T2 satisfy, P
    DES
  
  =
  
    
      P
      ⁡
      
        [
        
          1
          -
          
            
              S
              2
            
            ⁡
            
              (
              
                
                  T
                  2
                
                
                  
                    T
                    1
                  
                  +
                  
                    T
                    2
                  
                
              
              )
            
          
        
        ]
      
    
    ., where P is a polishing rate of the edge portion without using the polishing control groove, PDES is a desired polishing rate, and, S
    2
  
  =
  
    β
    180, where β is the angle subtended across the substrate by the polishing control groove relative to the center of the substrate.