8 January 2026Resigned Iida, Takuro as Director
27 October 2025Resigned Watanabe, Masakazu as Director
4 June 2025Appointed Deguchi, Hiroaki as Director
29 May 2025Appointed Hatano, Seigo as Secretary
29 May 2025Resigned Kimura, Koji as Secretary
20 May 2025Appointed Tsuda, Hirokazu as Director
26 June 2024Resigned Morimoto, Masato as Director
26 June 2024Appointed Sakai, Eiji as Director
8 December 2023Appointed Morimoto, Masato as Director
16 June 2020Appointed Iida, Takuro as Director
16 June 2020Resigned Mitani, Eizo as Director
27 June 2018Appointed Shibata, Yasuyuki as Director
27 June 2018Resigned Shirayama, Masaki as Director
11 April 2018Appointed Kimura, Koji as Secretary
11 April 2018Resigned Yoshitsugu, Keisuke as Secretary
9 January 2018Appointed Watanabe, Masakazu as Director
27 June 2017Appointed Mitani, Eizo as Director
20 June 2017Resigned Fujitani, Tsuyoshi as Director
11 November 2015Appointed Fujitani, Tsuyoshi as Director
31 October 2015Resigned Kuroda, Shigeru as Director
1 June 2014Appointed Shirayama, Masaki as Director
1 June 2014Resigned Hongo, Shosuke as Director
1 March 2014Appointed Yoshitsugu, Keisuke as Secretary
28 February 2014Resigned Tanaka, Shinji as Secretary
15 March 2012Appointed Kuroda, Shigeru as Director
15 March 2012Resigned Fukaya, Jun as Director
27 January 2012Resigned Bayram, Andrew John as Director
17 January 2011Resigned Nishiguchi, Masanori, Dr as Director
14 May 2010Resigned Isobe, Masato as Director
14 May 2010Appointed Hongo, Shosuke as Director
1 October 2009Appointed Tanaka, Shinji as Secretary
1 October 2009Appointed Nishiguchi, Masanori, Dr as Director
1 June 2009Appointed Fukaya, Jun as Director
20 June 2007Resigned Hongo, Shousuke as Director
20 June 2007Appointed Isobe, Masato as Director
29 June 2005Appointed Hongo, Shousuke as Director
30 June 2004Resigned Seki, Osamu as Director
31 January 2004Resigned Otohata, Satoshi as Director
11 March 2002Appointed Otohata, Satoshi as Director
30 September 1999Appointed Bayram, Andrew John as Director
30 September 1999Resigned Yamada, Naoki as Director
6 May 1999Resigned Kimata, Chihiro as Director
6 May 1999Appointed Seki, Osamu as Director
8 May 1996Appointed Yamada, Naoki as Director
8 May 1996Appointed Kimata, Chihiro as Director