1 October 2025Appointed Iwamoto, Shinichi as Director
1 April 2025Appointed Kearney, Gordon Christopher as Director
1 April 2025Resigned Horiike, Shigeyoshi as Director
26 June 2023Resigned Shimazu, Kozo as Secretary
1 April 2023Appointed Okumura, Daisuke as Director
31 March 2023Resigned Mukai, Norio as Director
1 October 2021Resigned Ogawa, Kiyoshi as Director
1 October 2021Appointed Furuhashi, Osamu as Director
1 April 2021Resigned Waki, Hiroaki as Director
1 April 2021Appointed Horiike, Shigeyoshi as Director
1 April 2020Resigned Nishimoto, Ryuji as Director
1 April 2020Appointed Mukai, Norio as Director
1 October 2019Appointed Ogawa, Kiyoshi as Director
1 October 2019Resigned Nakanishi, Hiroaki, Dr as Director
29 June 2017Appointed Nishimoto, Ryuji as Director
29 June 2016Appointed Waki, Hiroaki as Director
29 June 2016Resigned Ogawa, Kiyoshi as Director
27 June 2013Appointed Ogawa, Kiyoshi as Director
27 June 2013Resigned Konishi, Ikuo as Director
29 June 2010Resigned Kumashiro, Sumio, Doctor as Director
29 June 2010Appointed Shimazu, Kozo as Secretary
29 June 2010Appointed Konishi, Ikuo as Director
1 September 2009Appointed Nakanishi, Hiroaki, Dr as Director
31 August 2009Resigned Konishi, Ikuo as Director
1 October 2004Appointed Kumashiro, Sumio, Doctor as Director
1 October 2004Resigned Yoshida, Tamio, Dr as Director
1 September 2004Appointed Konishi, Ikuo as Director
1 September 2004Resigned Kumashiro, Sumio as Director
29 June 2004Resigned Kawabe, Yasutsugu as Director
29 June 2004Appointed Yoshida, Tamio, Dr as Director
28 June 2001Appointed Kawabe, Yasutsugu as Director
28 June 2001Resigned Kubodera, Toshiya as Director
29 June 2000Resigned Yoshida, Yukio as Director
1 April 1997Appointed Yoshida, Yukio as Director
1 April 1997Appointed Kubodera, Toshiya as Director
1 April 1997Appointed Kumashiro, Sumio as Director