28 February 2006Resigned Kokubo, Rikio as Director
28 February 2006Resigned Nabeshima, Tsukasa as Director
1 April 2004Resigned Takemasa, Kazuo as Director
1 April 2004Appointed Sato, Isamu as Director
22 November 2002Resigned Hozumi, Shinichi as Director
21 November 2002Appointed Kokubo, Rikio as Director
25 June 2002Resigned Hino, Makio as Director
12 June 2000Appointed Hino, Makio as Director
12 June 2000Appointed Nabeshima, Tsukasa as Director
12 May 2000Resigned Okamura, Munemasa as Director
12 May 2000Resigned Watanabe, Shuji as Director
12 May 2000Resigned Kuwabara, Seiichi as Director
10 June 1998Resigned Fujinaga, Takashi as Director
10 June 1998Appointed Okamura, Munemasa as Director
31 August 1997Resigned Fujimoto, Yoshio as Director
11 June 1996Appointed Hozumi, Shinichi as Director
6 February 1996Resigned Sakura, Yoshiaki as Director
6 February 1996Appointed Watanabe, Shuji as Director
6 February 1996Resigned Kobayashi, Masami as Director
6 February 1996Resigned Yokota, Morimasa as Director
6 February 1996Appointed Fujinaga, Takashi as Director
2 January 1996Resigned Kaburaki, Michio as Director
2 January 1996Appointed Kuwabara, Seiichi as Director
3 October 1994Appointed Takemasa, Kazuo as Director
3 October 1994Resigned Take, Tsuneo as Director
3 October 1994Appointed Sakura, Yoshiaki as Director
3 October 1994Resigned Arimoto, Nobuhiro as Director
3 October 1994Appointed Kobayashi, Masami as Director
21 September 1994Appointed Fujimoto, Yoshio as Director
21 September 1994Resigned Tsushima, Susumu as Director
22 February 1993Resigned Kagoshima, Tadayuki as Director
22 February 1993Resigned Hirashi, Keita as Director
22 February 1993Appointed Yokota, Morimasa as Director
20 November 1992Resigned Fujita, Mitsuo as Director
24 February 1992Appointed Kaburaki, Michio as Director
24 February 1992Appointed Kagoshima, Tadayuki as Director