6th All-Japan Open Championship — IKO (1974)
5th All-Japan Open Championship — IKO (1973)
10th All-Japan Open Championship — IKO (1978)
9th All-Japan Open Championship — IKO (1977)
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)
