INTERNATIONAL BUSINESS MACHINES CORPORATION; HUANG, Wu-song; LIU, Sen; LI, Wai-kin; GOLDFARB, Dario, L.; VYKLICKY, Libor; GLODDE, Martin; VARANASI, Pushkara, R. Patent: WO2011/22221 A2, 2011 ; Location in patent: Page/Page column 31 ;