Showing 1–9 of 9 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Takayoshi Hayashi | Mazda Motor | 11 |
| 2 | Fumihiko Maeda | Honda Motor Co. | 6 |
| 3 | Tooru Ueno | Hitachi High-Technologies | 5 |
| #4 | Toshiyuki Nakamura | Anaeropharma Science | 3 |
| #5 | Michiharu Tamura | Nippon Steel | 1 |
| #5 | Shin-ichi Fujimoto | Nippon Steel | 1 |
| #5 | Satihiro Yoshimatsu | Hitachi | 1 |
| #5 | Fujimoto Tadanobu | Takeda Chemical Industries | 1 |
| #5 | Itsumasa Iwamoto | Takeda Chemical Industries | 1 |