Chemical Utilization
Chemical processes are typically ÅginheritedÅh A successful start up depends on quickly getting product out the door and that product (and process) is transferred from another fab. This can result in the perpetuation of poor chemical utilization.
Once product is qualified, process changes become difficult. Depending on the perceived level of change, the customer may be notified and the new process may require Ågburn- inÅh of product