Patent ID: 7651384

Claim:
An electrochemical mechanical polishing fluid recycling method, comprising: selectively capturing a first portion of used electrochemical mechanical polishing fluid from a first electrochemical mechanical polishing station, the used electrochemical mechanical polishing fluid being free of excess water from rinse or other process steps, the selective capturing leaving at least a second portion of used electrochemical mechanical polishing fluid uncaptured; refurbishing the first selected portion to create a first refurbished electrochemical mechanical polishing fluid; providing the first refurbished electrochemical mechanical polishing fluid to an electrochemical mechanical polishing station for use as an electrochemical mechanical polishing fluid; selectively capturing a third portion of used electrochemical mechanical polishing fluid from a second electrochemical mechanical polishing station different from the first electrochemical mechanical polishing station, the used electrochemical mechanical polishing fluid being free of excess water from rinse or other process steps, the selective capturing leaving at least a fourth portion of used electrochemical mechanical polishing fluid uncaptured; refurbishing the third selected portion to create a third refurbished electrochemical mechanical polishing fluid; and providing the third refurbished electrochemical mechanical polishing fluid to an electrochemical mechanical polishing station for use as an electrochemical mechanical polishing fluid.