Data processing: measuring – calibrating – or testing – Measurement system – Performance or efficiency evaluation
Reexamination Certificate
2005-02-22
2005-02-22
Hoff, Marc S (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system
Performance or efficiency evaluation
C702S081000, C702S084000, C702S182000, C702S184000, C702S185000
Reexamination Certificate
active
06859756
ABSTRACT:
A method for use in a system for diagnosing the causes of manufacturing defects involves process characterization. A set of forms is identified for a workpiece and for a piece of manufacturing equipment that acts upon the workpiece. The forms for the workpiece are preferably a hierarchic set of geometric forms. Each such geometric form corresponds to an aspect of the action of the manufacturing equipment upon the workpiece. A plurality of measurements is made on a defective workpiece following the hierarchical order of forms. The measurements are compared to a reference datum, and a deviation from the datum is computed. If the deviation exceeds a preselected threshold, an alert condition results, attributable to the action of the manufacturing equipment. Targeted adjustment corresponding to the action that caused the defect can then be made to the equipment.
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Title: World Class Quality, Author: Keki R. Bhote and Adi K. Bhote, Part III, pp. 105-230 and Part IV, pp. 231-332, Second Edition, Published 2000 by AMACOM, New York, ISBN 0-8144-0427-8.
Hoff Marc S
Red X Holdings LLC
Tsai Carol S
White & Case LLP
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