Showing 1–8 of 8 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Akio Enomoto | Ngk Insulators | 2 |
| 1 | Kenji Fukuta | Tokuyama | 2 |
| 1 | Kohji Kamiya | Ricoh Company | 2 |
| 1 | Yutaka Kuroyama | Nippon Oil & Fats Co. | 2 |
| #5 | Hisashi Ito | Honda Motor Co. | 1 |
| #5 | Toyokazu Kurushima | Unknown | 1 |
| #5 | Takao Ooki | Aichi Steel Works | 1 |
| #5 | Nobuhiro Hayakawa | Ngk Spark Plug Co. | 1 |