Patent ID: 8360825

Claim:
A slurry supply system for chemical mechanical polishing apparatuses, the slurry supply system comprising: multiple supply modules, each supply module including: a slurry reservoir; at least one delivery line connecting to the slurry reservoir, the delivery line being oriented toward one of the chemical mechanical polishing apparatus; a slurry pipe connecting each delivery line with the slurry reservoir, wherein the slurry pipe further comprises a primary slurry line and a secondary slurry line for alternatively feeding a slurry from the slurry reservoir into one of the delivery lines; and at least one slurry valve on where the slurry pipe and the delivery line are connected, each slurry valve corresponding to one delivery line; and a flushing module coupled to each supply module, the flushing module including: a flushing liquid reservoir; multiple flushing lines connecting to the flushing liquid reservoir, each flushing line being coupled to one delivery line, and at least one first flushing valve on each flushing line, wherein the flush module selectively flushes one of the delivery lines by manipulating the first flushing valve corresponding to the selected delivery line.