Abrading – Precision device or process - or with condition responsive... – With indicating
Reexamination Certificate
2006-03-21
2006-03-21
Hail, III, Joseph J. (Department: 3723)
Abrading
Precision device or process - or with condition responsive...
With indicating
C451S005000, C451S006000, C451S285000
Reexamination Certificate
active
07014531
ABSTRACT:
Apparatus for inline measurement of material removal during a polishing or grinding process including:a. a substantially circular rotatable grinding or polishing pad; andb. a sample holder; andc. a sample with a top, a bottom and one or more side surfaces;the sample holder being arranged to hold the bottom surface of the sample in contact with the pad and the sample holder being connected to a moving device to move the sample to a position at least partially over the rim of the pad, during at least a part of the process, the apparatus also including a detecting device for sampling the distances between a reference mark and a target area in the sample and a plane defined by the bottom surface of the sample during the process.
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Dykema Gossett PLLC
Grant Alvin J.
Hail III Joseph J.
Struers A/S
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