US Patent 10570350 Systems and methods of cannabis oil extraction

A cannabis oil extraction apparatus may include an extraction unit, condenser, winterization unit, micron filter, preheater, short-path distillation unit, and condenser. The extraction unit may utilize cellular disruption in a food grade solvent to extract cannabis oil from plant material. The short-path distillation unit may utilize molecular distillation. The short-path distillation unit may include a recirculation loop for multiple passes through the short-path distillation unit to separate extract components by weight. In one example, multiple short-path distillation units may be aligned is series to incrementally separate extract components by weight.