12th All-Japan Open Championship — IKO (1980)
11th All-Japan Open Championship — IKO (1979)
15th All-Japan Open Championship — IKO (1983)
14th All-Japan Open Championship — IKO (1982)
13th All-Japan Open Championship — IKO (1981)
20th All-Japan Open Championship — IKO (1988)
18th All-Japan Open Championship — IKO (1986)
17th All-Japan Open Championship — IKO (1985)
16th All-Japan Open Championship — IKO (1984)
22nd All-Japan Open Championship — IKO (1990)
