US Patent no US9227853B2 granted on May 01, 2016 for the invention “Desalination unit for the production of potable water from sub-soil brine” P. K. Ghosh, G. R. Desale, B. H. Khatri, R. N. Patel, N. G. Borle, S.N. Patel, M.R. Gajjar. (IPC8Class:AC02F116FI USPC Class: 202189)