Patent ID: 11964359
Assignee: APPLIED MATERIALS, INC.
Field: Machine tools (Mechanical engineering)
Classification: CPC B  H | IPC B  H

Claim 23:
24. A polishing article, comprising:
a composite polishing pad body, having:
a first grooved surface, comprising:
a plurality of polishing pad features formed from a first polymer material having a first zeta potential; and
one or more base features formed from a second polymer material having a second zeta potential; and
a second flat surface opposite the first grooved surface, wherein the first zeta potential is different from the second zeta potential;
wherein:
the first zeta potential measured with the use of a neutral solution is equal to or above −70 mV and less than 0 mV and the second zeta potential measured with the use of a neutral solution is equal to or above 0 mV and less than 50 mV; or
the first zeta potential measured with the use of a neutral solution is equal to or above 0 mV and less than 50 mV and the second zeta potential measured with the use of a neutral solution is equal to or above −70 mV and less than 0 mV.