Patent Number: 8,718,809

Title: Comprehensive analysis of queue times in microelectronic manufacturing

Abstract: A system for determining a group of semiconductor manufacturing process steps with a similar influence on individual semiconductor products. The system generates a first table including time stamps for the individual semiconductor products. The system creates a second table including Q-times based on the first table. The Q-times refers to time differences between every pair of the time stamps. The system forms a dependency table by grouping the Q-times with similar dependencies together. The system identifies groups of the similar dependencies. The system extracts semiconductor process steps belonging to the groups.

Inventors: Baseman; Robert J. (Brewster, NY), Nowicki; Tomasz J. (Fort Montgomery, NY)

Assignee: International Business Machines Corporation

International Classification: G06F 19/00 (20110101)

Expiration Date: 5/06/12018