LUPIN LIMITED; IRLAPATI, Nageswara, Rao; DESHMUKH, Gokul, Keruji; KARCHE, Vijay, Pandurang; JACHAK, Santosh, Madhukar; SINHA, Neelima; PALLE, Venkata, P.; KAMBOJ, Rajender, Kumar Patent: WO2012/56478 A1, 2012 ; WO 2012/056478 A1