Showing 1–5 of 5 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Mitsuyoshi Watanabe | Brother Kogyo | 25 |
| 2 | Hirofumi Ozeki | Ngk Spark Plug Co. | 11 |
| 2 | Masayosi Iwata | Mitsubishi Electric | 11 |
| #4 | Takamitsu Mizuno | Ngk Spark Plug Co. | 9 |
| #5 | Yasuichi Mitsushima | Toyota Central R&D Labs | 3 |