SIGNA S.A. DE C.V.; BERNAL-VAZQUEZ, Pablo, Miguel; LAZCANO-SERES, Jose, Miguel; MELGAR-FERNANDEZ, Roberto, Carlos; CARRASCO-PACHECO, Cuauhtemoc; ZAMBRANO-HUERTA, Armando; MARTINEZ-DIAZ, Alberto; REYES-REYES, Maria de la Luz Patent: WO2012/107831 A1, 2012 ; Location in patent: Page/Page column 12 ;