| Year | JOS Prize | Okada Prize |
| 1991 | Takahisa Nemoto | Kazunori Akitomo, Joji Ishizaka |
| 1992 | Masayuki Takahashi | Satoshi Sakai, Tsuneo Odate |
| 1993 | Hisashi Mitsuyasu | Hideshige Takada, Qiu Bo |
| 1994 | Yoshiaki Maita | Naoto Ebuchi, Toshi Nagata |
| 1995 | Toshihiko Teramoto | Humio Mitsudera, Takeshi Naganuma |
| 1996 | Humitake Seki | Yutaka Watanabe, Keiichiro Ohshima |
| 1997 | Toshio Yamagata | Toshio Suga, Takeshi Nakatsuka |
| 1998 | Yoshiyuki Nozaki | Hiroaki Saito, Yasuhiro Yamanaka |
| 1999 | Isao Koike | Riichi Suzuki, Yukio Masumoto |
| 2000 | Kimio Hanawa | Akira Ishikawa, Shinzou Fujio |
| Year | Uda Prize | |
| 1999 | Yutaka Nagata | |
| 2000 | Masaki Takematsu | |
