Workpiece surface influencing device designs for...

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2007-04-17

2007-04-17

Wilkins, III, Harry D. (Department: 1742)

Chemistry: electrical and wave energy

Apparatus

Electrolytic

C204S279000

Reexamination Certificate

active

10302755

ABSTRACT:
The present invention is directed to a top surface of a workpiece surface influencing device and a method of using the same. The top surface of the workpiece surface influencing device is adapted for use in an electrochemical mechanical processing apparatus in which a solution becomes disposed onto a conductive surface of a workpiece and electrochemical mechanical processing of the conductive surface is performed while relative movement and physical contact exists between the top surface and the conductive surface. The top surface comprises a ceramic material that presents a substantially planar contact area to the conductive surface, the ceramic material having a hardness greater than that of the conductive surface. A plurality of channels are formed through the top surface.

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