Showing 1–8 of 8 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Shinji Sutoh | Diesel Kiki Co. | 3 |
| 2 | Yoshihiro Kanaya | Rinnai | 2 |
| 3 | Hideyuki Hamanaka | Rinnai | 1 |
| 3 | Wataru Hasegawa | Brother Kogyo | 1 |
| 3 | Masami Hasegawa | Ngk Spark Plug Co. | 1 |
| 3 | Masahiko Koumura | Rinnai | 1 |
| 3 | Norio Kado | Diesel Kiki Co. | 1 |
| 3 | Seiji Sumikawa | Diesel Kiki Co. | 1 |