TOKYO (Standard&Poor's) Aug. 13, 2008--Standard&Poor's Ratings Services said today that its ratings on Bank of Tokyo-Mitsubishi UFJ Ltd. (BTMU; A+/Stable/A-1) and Mitsubishi UFJ Financial Group Inc. (MUFG; A/Stable/--) would not be affected by a cash tender offer from BTMU for UnionBanCal Corp. (UNBC: A/Stable/A-1). Under the deal, UNBC would become a wholly owned subsidiary of MUFG, which is the holding company of BTMU. BTMU and its parent said yesterday that BTMU had made a cash tender offer for all outstanding common stock of UNBC. UNBC is already a consolidated subsidiary of BTMU and MUFG, with MUFG currently holding a 65.4% stake in the firm through BTMU and other affiliates. The funds required to complete the acquisition