Patents Represented by Attorney, Agent or Law Firm Kirkpatrick & Lockahrt LLP
  • Patent number: 6290579
    Abstract: Apparatuses and methods are disclosed using a fixed abrasive polishing pad to perform mechanical polishing of a surface. The apparatus includes a polishing pad positioned opposing a wafer support to provide for polishing of a surface of a wafer placed on the support. The polishing pad includes a first member having a first polishing surface formed from an abrasive first material that is structurally degradable during polishing. The polishing pad also includes a second member having a second polishing surface formed from a second material that is less degradable and less abrasive relative to said first material. The first and second polishing surfaces define a polishing face that is brought into contact with the surface to be polished.
    Type: Grant
    Filed: January 7, 2000
    Date of Patent: September 18, 2001
    Assignee: Micron Technology, Inc.
    Inventors: Michael A. Walker, Karl M. Robinson