Patents by Inventor John J. Hannafin

John J. Hannafin 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 article for electro-chemical mechanical polishing
    Patent number: 7141155
    Abstract: A polishing pad or other shaped article for the electrochemical mechanical polishing (ECMP) of a workpiece. The article includes an electrically-conductive compound which is formed into a layer. The compound is formulated as an admixture which includes a polymeric component forming a continuous phase in the layer, and an electrically-conductive filler component forming a discrete phase within the continuous phase. With the workpiece and the layer being electrically connected and with an electrical bias being applied between the workpiece and the layer, the bias being capable of activating an electrochemical reaction, the compound exhibits an overpotential for the activation of the reaction greater than the bias.
    Type: Grant
    Filed: January 21, 2004
    Date of Patent: November 28, 2006
    Assignee: Parker-Hannifin Corporation
    Inventors: Michael H. Bunyan, Thomas A. Clement, John J. Hannafin, Marc E. LaRosee, Kent M. Young
  • Polishing article for electro-chemical mechanical polishing
    Publication number: 20040159558
    Abstract: A polishing pad or other shaped article for the electrochemical mechanical polishing (ECMP) of a workpiece. The article includes an electrically-conductive compound which is formed into a layer. The compound is formulated as an admixture which includes a polymeric component forming a continuous phase in the layer, and an electrically-conductive filler component forming a discrete phase within the continuous phase. With the workpiece and the layer being electrically connected and with an electrical bias being applied between the workpiece and the layer, the bias being capable of activating an electrochemical reaction, the compound exhibits an overpotential for the activation of the reaction greater than the bias.
    Type: Application
    Filed: January 21, 2004
    Publication date: August 19, 2004
    Inventors: Michael H. Bunyan, Thomas A. Clement, John J. Hannafin, Marc E. LaRosee, Kent M. Young
  • Dart case
    Patent number: D360752
    Type: Grant
    Filed: February 28, 1994
    Date of Patent: August 1, 1995
    Inventor: John J. Hannafin