Patent ID: 7531040

Claim:
A system for photoresist recovery comprising: a nozzle to dispense a photoresist; a bowl having an interior region and an interior surface; a wafer platform disposed within the interior region of the bowl; a wafer spindle, coupled to the wafer platform, constructed and arranged to spin the wafer platform to propel an excess amount of photoresist deposited upon a wafer placed upon the wafer platform to the interior surface of the bowl; at least one photoresist recovery container coupled to the bowl via a recovery drainpipe; a recovery drainpipe block capable of being positioned in front of the recovery drainpipe to prevent contaminates from entering the recovery drainpipe; a perimeter drain formed within the bowl by extending around the perimeter of the bowl such that the excess amount of photoresist propelled from the wafer proceeds through the perimeter drain to the photoresist recovery container; wherein the perimeter drain comprises: a concave conduit for reducing the surface area contacting the photoresist being recovered; and a weeping seal to permit a wash solvent to wash the excess amount of photoresist propelled from the wafer through the perimeter drain to the photoresist recovery container.