Abrasive tool making process – material – or composition – With inorganic material
Reexamination Certificate
2011-03-08
2011-03-08
Green, Anthony J (Department: 1731)
Abrasive tool making process, material, or composition
With inorganic material
C051S308000, C051S309000, C438S692000, C438S693000
Reexamination Certificate
active
07901474
ABSTRACT:
The present invention provide a chemical-mechanical polishing composition for inhibiting dishing and erosion as well as rapidly polishing an insulating film and barrier film at the same time while maintaining the flatness of the substrate surface polished. The present chemical-mechanical polishing composition comprises methanesulfonic acid, an alkali metal ion, an oxidizing agent, a silica abrasive and water, and has a pH of 8 to 12.
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Itoh Yuji
Nishioka Ayako
Shimazu Yoshitomo
Green Anthony J
Parvini Pegah
Showa Denko K.K.
Sughrue & Mion, PLLC
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