20th, 21st
Yoshinobu Kubota
April 2014 - March 2020
18th, 19th
Tsutomu Fuse
April 2008 - March 2014
16th, 17th
Bruce Stronach
April 2005 - March 2008
15th
Keiichi Ogawa
May 2002 - March 2005
14th
Yuuzo Kato
May 1998 - April 2002
13th
Makoto Umeda
May 1994 - April 1998
12th
Noboru Takasugi
May 1990 - April 1994
10th, 11th
Shudo Takai
May 1982 - April 1990
9th
Heiji Kawai
May 1978 - April 1982
8th
Naoki Kuwajima
May 1974 - April 1978
7th
Minoru Umezawa
May 1970 - March 1974
5th, 6th
Tsuneo Matsukura
April 1964 - May 1969
4th
Hiroto Saigusa
October 1961 - November 1963
3rd
Kotarou Maeda
October 1957 - October 1961
2nd
Toyozaburou Kikuchi
April 1953 - April 1957
1st
Yasushi Sekiguchi
April 1950 - April 1952