Patent ID: 9457449
Filing Date: 2016-10-04
CPC Classification: B24B,B29C,H01L

Claim Text:
1. A chemical mechanical polishing pad, comprising: a polishing layer having a polishing surface, a base surface and an average thickness, T wherein the polishing layer comprises a continuous non-fugitive polymeric phase and a discontinuous non-fugitive polymeric phase; wherein the continuous non-fugitive polymeric phase has a plurality of periodic recesses having an average recess depth, D wherein the average recess depth, D wherein the plurality of periodic recesses are occupied with the discontinuous non-fugitive polymeric phase; wherein the continuous non-fugitive polymeric phase has an open cell porosity of ≦6 vol %; wherein the discontinuous non-fugitive polymeric phase contains an open cell porosity of ≧10 vol %; and, wherein the polishing surface is adapted for polishing a substrate.