Top Inventors at Union Machinery Co. All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Masao Suzuki | 4 |
| 2 | Yasuhiro Ishikawa | 3 |
| 3 | Masakazu Koiso | 2 |
| #4 | Shinji Yamaguchi | 2 |
| #5 | Atsushi Nakanishi | 1 |
| #6 | Hideo Tadokoro | 1 |
| #7 | Katsuya Motohira | 1 |
| #8 | Kazumasa Yoshizawa | 1 |
| #9 | Kenichi Abe | 1 |
| #10 | Masashi Seto | 1 |
| #11 | Minoru Michita | 1 |
| #12 | Nobuhiro Kimura | 1 |
| #13 | Ryo Kameoka | 1 |
| #14 | Seiya Amatatsu | 1 |
| #15 | Seiichiro Hayashi | 1 |
| #16 | Tetsu Hirose | 1 |
| #17 | Tom Katsurahara | 1 |
| #18 | Tsugio Anbo | 1 |
| #19 | Yoshio Takeuchi | 1 |
| #20 | Yukifumi Machida | 1 |
| #21 | Akiyo Higuchi | 1 |