Past annual congress

		President	Venue
1990	1st	Yoshio Kuroda	Tokyo
1991	2nd	Haruo Takazawa	Yokohama
1992	3rd	Nobuyasu Ichikawa	Osaka
1993	4th	Nozomu Ohata	Tokyo
1994	5th	Takaaki Igata	Tokushima
1995	6th	Hiroyuki Nakajima	Tokyo
1996	7th	Hyoe Ishikawa	Nara
1997	8th	Yutaka Yabe	Tokyo
1998	9th	Seiichi Ishii	Sapporo
1999	10th	Masahiro Murayama	Tokyo
2000	11th	Naoya Tajima	Miyazaki
2001	12th	Yutaka Miyanaga	Tsukuba
2002	13th	Yuzo Sato	Nagoya
2003	14th	Hideshige Moriya	Chiba
2004	15th	Shigeo Fujimoto	Osaka
2005	16th	Keizo Sakamoto	Tokyo
2006	17th	Masaaki Arakawa	Niigata
2007	18th	Teruaki Mori	Beppu
2008	19th	Toru Fukubayashi	Tokyo
2009	20th	Masahiro Kurosaka	Kobe
2010	21st	Ichiro Kono	Tsukuba
2011	22nd	Satoshi Toh	Aomori
2012	23rd	Hideo Matsumoto	Yokohama
2013	24th	Hiroshi Mizuta	Kumamoto
2014	25th	Takashi Kawahara	Tokyo
2015	26th	Shinichi Yoshiya	Kobe
2016	27th	Takeshi Muneta	Chiba
2017	28th	Satoshi Tani	Tokyo
2018	29th	Atsushi Masujima	Sapporo
2019	30th	Fumihiro Yamasawa	Yokohama
2020	31st	Etsuo Chosa	Online Conference
2021	32nd	Takao Akama	Online Conference
2022	33rd	Toshihiko Yamashita	Sapporo
2023	34th	Fuminori Katsukawa	Yokohama
2024	35th	Go Omori	Niigata