Patent ID: 7569268

Claim:
A conditioned polishing pad suitable for planarizing at least one of semiconductor, optical and magnetic substrates, the polishing pad having a bulk ultimate tensile strength of at least 4,000 psi (27.6 MPa), a polishing surface and a polymeric matrix, the polymeric matrix having closed cell pores, the polishing surface having opened pores, the closed cell pores having an average diameter of 1 to 50 μm, being 1 to 40 volume percent of the polishing pad at a location below the polishing surface and the polishing surface having a natural porosity distribution with an exponential decay constant, τ, of 1 to 5 μm, and a conditioner cutting characteristic texture having a half height half width, W 1/2 , less than or equal to the value of τ.