Patents by Inventor Christopher N. Loesch

Christopher N. Loesch has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Polishing pads including phase-separated polymer blend and method of making and using the same
    Patent number: 9162340
    Abstract: Polishing pads containing a phase-separated polymer blend, and methods of making and using such pads in a polishing process. In one exemplary embodiment, the polishing pads include a multiplicity of polishing elements integrally formed in a sheet. In another exemplary embodiment, the polishing elements are bonded to a support layer, for example by thermal bonding. In certain embodiments, the polishing pad may additionally include a compliant layer affixed to the support layer, and optionally, a polishing composition distribution layer.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: October 20, 2015
    Assignee: 3M Innovative Properties Company
    Inventors: William D. Joseph, Gary M. Palmgren, Stephen C. Loper, Christopher N. Loesch
  • POLISHING PADS INCLUDING PHASE-SEPARATED POLYMER BLEND AND METHOD OF MAKING AND USING THE SAME
    Publication number: 20120315830
    Abstract: Polishing pads containing a phase-separated polymer blend, and methods of making and using such pads in a polishing process. In one exemplary embodiment, the polishing pads include a multiplicity of polishing elements integrally formed in a sheet. In another exemplary embodiment, the polishing elements are bonded to a support layer, for example by thermal bonding. In certain embodiments, the polishing pad may additionally include a compliant layer affixed to the support layer, and optionally, a polishing composition distribution layer.
    Type: Application
    Filed: December 28, 2010
    Publication date: December 13, 2012
    Applicant: 3M Innovative Properties Company
    Inventors: William D. Joseph, Gary M. Palmgren, Stephen C. Loper, Christopher N. Loesch
  • Pad constructions for chemical mechanical planarization applications
    Patent number: 7163444
    Abstract: The present invention is directed to an abrasive article comprising a fixed abrasive layer and a subpad. The fixed abrasive element is co-extensive with the subpad. The subpad comprises a resilient element. The resilient element has a Shore A hardness of no greater than 60 as measured using ASTM-2240.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: January 16, 2007
    Assignee: 3M Innovative Properties Company
    Inventors: Jeffrey S. Kollodge, Christopher N. Loesch
  • Pad constructions for chemical mechanical planarization applications
    Publication number: 20040137831
    Abstract: The present invention is directed to an abrasive article comprising a fixed abrasive layer and a subpad. The fixed abrasive element is co-extensive with the subpad. The subpad comprises a resilient element. The resilient element has a Shore A hardness of no greater than 60 as measured using ASTM-2240.
    Type: Application
    Filed: December 23, 2003
    Publication date: July 15, 2004
    Applicant: 3M Innovative Properties Company
    Inventors: Jeffrey S. Kollodge, Christopher N. Loesch