Showing 1–6 of 6 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Hiroki Nagai | Toyota | 12 |
| 2 | Hirofumi Kondo | Brother Kogyo | 4 |
| 3 | Yoichi Oi | Aisin Aw Co. | 2 |
| #4 | Naoshi Tanimoto | Aica Kogyo Co. | 1 |
| #4 | Katsuyuki Morita | Kitagawa Industries Co. | 1 |
| #4 | Reimon Fukuzawa | Ngk Spark Plug Co. | 1 |