Showing 1–9 of 9 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Hiroshi Ando | Denso | 6 |
| 1 | Hideyuki Tanaka | Mitsubishi Electric | 6 |
| 3 | Takao Tsuda | Unknown | 4 |
| 3 | Hitoshi Yamaguchi | Denso | 4 |
| #5 | Katsuhiko Yamaguchi | Toyota | 3 |
| #6 | Hirofumi Funabashi | Toyota Central R&D Labs | 2 |
| #7 | Tsutomu Totani | Beat-Sonic Co. | 1 |
| #7 | Yoshihiko Kohmura | Ngk Spark Plug Co. | 1 |
| #7 | Yasuhiro Kondoh | Toyota Industries | 1 |