LUPIN LIMITED; ROY, Bhairab, Nath; KAMBOJ, Rajender, Kumar; GEORGE, Shaji, K.; VENUGOPAL, Spinvin, C.; SHANMUGVADIVELU, Muthu, Kumaran; SINHA, Neelima Patent: WO2011/18796 A1, 2011 ; Location in patent: Page/Page column 19 ; WO 2011/018796 A1