Patent ID: 11931856
Assignee: SK ENPULSE CO., LTD.
Field: Machine tools (Mechanical engineering)
Classification: CPC B  H | IPC B  H

Claim 0:
1. A polishing pad, which comprises a polishing layer comprising a plurality of pores,
wherein, in a diameter distribution of the plurality of pores, a number average diameter (Da) of the plurality of pores, defined as an average value obtained by dividing a sum of diameters of the plurality of pores by a number of the pores, ranges from 15 μm to 50 μm, and
an area ratio, defined as a percentage of an area (Au) of pores having a diameter at least 200% greater than the number average diameter of the plurality of pores to a total area of the polishing surface ranges from 0.9% to less than 12%,
wherein a diameter (Du) of pores having the diameter at least 200% greater than the number average diameter of the plurality of pores is 100 μm or more.