WOCKHARDT RESEARCH CENTRE; YADAV, RAMPRASAD; SHAIKH, ZAKIR GAFOOR; NASIR ALI, SHAFAKAT ALI; MERWADE, ARVIND; SIDDIQUI MOHAMMAD, JAWEED MUKARRAM Patent: WO2009/4593 A2, 2009 ; Location in patent: Page/Page column 7 ;