Electrolysis: processes – compositions used therein – and methods – Electrolytic erosion of a workpiece for shape or surface... – With programmed – cyclic – or time responsive control
Reexamination Certificate
2007-07-31
2007-07-31
Wilkins, III, Harry D. (Department: 1742)
Electrolysis: processes, compositions used therein, and methods
Electrolytic erosion of a workpiece for shape or surface...
With programmed, cyclic, or time responsive control
C205S646000, C205S662000, C205S663000
Reexamination Certificate
active
10638751
ABSTRACT:
A method of removing material from a conductive surface of a workpiece while the conductive surface and an electrode are wetted by a process solution. The method comprises the steps of applying power between the conductive surface and the electrode, rendering the conductive surface anodic. The method includes the step of allowing a passivation layer to build up on the conductive surface/The method includes the step of applying an external influence to the conductive surface to periodically reduce the passivation layer thickness. Advantages of the invention include an efficient technique for electropolishing a workpiece.
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Knobbe Martens Olson & Bear LLP
Novellus Systems Inc.
Wilkins, III Harry D.
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