Showing 1–9 of 9 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Masashi Kato | Toyota | 5 |
| 2 | Fumikazu Sato | Brother Kogyo | 2 |
| 2 | Takayoshi Atsumi | Ngk Spark Plug Co. | 2 |
| 2 | Kazuhito Misumi | Brother Kogyo | 2 |
| #5 | Nobuyuki Hotta | Ngk Spark Plug Co. | 1 |
| #5 | Tetsuya Hattori | Sumitomo Electric Industries | 1 |
| #5 | Masataka Taguchi | Ngk Spark Plug Co. | 1 |
| #5 | Hisashi Sasaki | Ngk Spark Plug Co. | 1 |
| #5 | Naoki Otsuka | Brother Kogyo | 1 |