[Description 99.1 Announcement on 2010/03/19: To announce related materials on acquisition of machinery and equipment 99.2 Announcement on 2010/03/19: To announce related materials on acquisition of machinery and equipment 99.3 Announcement on 2010/03/22: To announce related materials on acquisition of machinery and equipment 99.4 Announcement on 2010/03/22: To announce accumulative shares repurchased exceeding NTD$300 million in value 99.5 Announcement on] [FORM 6-K April 20, 2010 United Microelectronics Corporation ——————————————————————————————————— No. 3 Li Hsin Road II ——————————————————————————————————— x x n/a United Microelectronics Corporation Chitung Liu Chitung Liu Chief Financial Officer Description 99 6K on 04/20/2010 6-K 1 htm_4928.htm LIVE FILING]