US patent 5560737, John R. Schuring, David S. Kosson, Conan D. Fitzgerald, Sankar Venkatraman; Kosson, David S. & Fitzgerald, Conan D. et al., "Pneumatic fracturing and multi-component injection enhancement of in situ bioremediation", issued 1996-10-01
US patent 5908267, John R. Schuring, Thomas M. Boland, Trevor C. King, Sean T. McGonigal; Boland, Thomas M. & King, Trevor C. et al., "Treating non-naturally occurring subsurface soil contaminants with pneumatic injection of dry media", issued 1999-06-01, assigned to New Jersey Institute of Technology