Measurement of etching

Details Measurement of etching Measurement of etching

2003-03-21

2009-02-24

Olsen, Allan (Department: 1792)

Etching a substrate: processes

Forming or treating thermal ink jet article

Reexamination Certificate

active

07494596

ABSTRACT:
Methods and apparatus for determining the extent of etching in material by locating a detector element adjacent to a portion of the material that is to be etched. The width of the element varies. The resistance of the element is measured upon etching the portion.

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