System and method for identifying semiconductor process...

Data processing: generic control systems or specific application – Specific application – apparatus or process – Contest or contestant analysis – management – or monitoring

Reexamination Certificate

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C700S095000, C700S121000, C714S047300

Reexamination Certificate

active

07085612

ABSTRACT:
A computer-implemented method and system for identifying process steps for purposes of queue-time control and abnormality detection is provided. In one example, the method includes retrieving manufacturing information associated with a fabrication process, where the manufacturing information includes multiple process step pairs. The manufacturing information may be divided into at least a high group and a low group using a statistical clustering method. Values, such as P-values, may then be calculated for each process step pair by applying a non-parametric statistical method to the high and low groups. The process step pairs may be ranked based on their calculated values, and redundant process step pairs may be eliminated. The remaining process step pairs may then be analyzed to identify a particular process step or process step pair.

REFERENCES:
patent: 5665199 (1997-09-01), Sahota et al.
patent: 5880960 (1999-03-01), Lin et al.
patent: 6134482 (2000-10-01), Iwasaki
patent: 6243612 (2001-06-01), Rippenhagen et al.
patent: 6766283 (2004-07-01), Goldman et al.
patent: 2003/0058909 (2003-03-01), Benyon

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