Showing 1–9 of 9 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Shin Nakamura | Daihachi Chemical Industry Co. | 4 |
| 2 | Hiroichi Matsuhisa | Daido Metal Company | 2 |
| 2 | Kunio Takeuchi | Sanyo Electric Co. | 2 |
| 2 | Norihiko Nadanami | Ngk Spark Plug Co. | 2 |
| #5 | Mutsumi Kitagawa | Ngk Insulators | 1 |
| #5 | Haruo Okudaira | Toyo Boseki Kabushiki Kaisha | 1 |
| #5 | Yukinobu Miyazaki | Toyo Boseki Kabushiki Kaisha | 1 |
| #5 | Masazumi Fukushima | Murata Kikai | 1 |
| #5 | Tsuyoshi Hosoito | Kabushiki Kaisha Toshiba | 1 |