Patent ID: 7161247

Claim:
A polishing composition comprising: (a) an oxidizing agent that oxidizes a noble metal, (b) an anion selected from the group consisting of sulfate, borate, nitrate, and phosphate, and (c) a liquid carrier; wherein the oxidizing agent that oxidizes a noble metal is selected from the group consisting of bromates, bromites, hypobromites, chlorates, chlorites, hypochlorites, perchlorates, iodates, hypoiodates, periodates, cerium (IV) salts, permanganate, silver (III) salts, peroxyacetic acid, organo-halo-oxy compounds, monoperoxy sulfate, monoperoxy sulfite, monoperoxy thiosulfate, monoperoxyphosphate, monoperoxypyrophosphate, and monoperoxyphosphate.