Data processing: generic control systems or specific application – Specific application – apparatus or process – Product assembly or manufacturing
Reexamination Certificate
2006-05-09
2006-05-09
Picard, Leo (Department: 2125)
Data processing: generic control systems or specific application
Specific application, apparatus or process
Product assembly or manufacturing
Reexamination Certificate
active
07043322
ABSTRACT:
A system and method for utilizing computer-implementable decision support systems to determine factory schedules. Methodologies associated with the invention include advanced planning systems, optimization and heuristic based algorithms, constraint-based programming, and simulation. The method may iteratively assign lots to non-full batches based on comparison of the resulting impact to mean flow time with the continuously approximated cost per batch. Once lots have been assigned to batches, potential interchanges of lots among batches are explored. If the variable cost per batch changes from one interchange to the next, the method may backtrack and attempt to re-allocate lots to batches based on the increased cost per batch.
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G. Dobson, and R. S. Nambimadom. 2001; The Batch Loading and Scheduling Problem, Operation Research, vol. 49, issue 1, pp. 52-65.
N. Govind, et al., “Resident-Entity Based Simulation of Batch Chamber Tools in 300MM Semiconductor Manufacturing”, Proceedings of the 2003 Winter Simulation Conference.
Denton Brian T.
Fordyce Kenneth J.
Milne Robert J.
Greenblum & Bernstein P.L.C.
International Business Machines - Corporation
Kasenge Charles
Kotulak, Esq. Richard
Picard Leo
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