Patent ID: 8728240

Claim:
An apparatus for recovery of precursor vapor from a gas and precursor vapor mixture used for deposition in a semiconductor fabrication process, the apparatus comprising a vacuum tight housing with an inlet for said gas and precursor vapor mixture to flow into the housing, a first outlet for gas of the gas and precursor vapor mixture to flow out of the housing, and a second outlet for a precursor liquid formed from precursor vapor condensation to be discharged from the housing, said housing having a multitude of internal heat conducting surfaces for heat transfer inside said housing and having a multitude of heat conducting surfaces for heat dissipation outside said housing, said housing being maintained at a temperature sufficient for said precursor vapor to condense and form the precursor liquid by a cooler in thermal contact with the housing and the housing positioned between the internal heat conducting surfaces and the heat conducting surfaces outside of said housing such that the cooler is in thermal contact with both the internal heat conducting surfaces and the heat conducting surfaces for dissipation outside said housing.