Showing 1–5 of 5 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Norihiko Nadanami | Ngk Spark Plug Co. | 4 |
| 2 | Mutsumi Kitagawa | Ngk Insulators | 3 |
| 2 | Kunio Takeuchi | Sanyo Electric Co. | 3 |
| #4 | Shin Nakamura | Daihachi Chemical Industry Co. | 1 |
| #4 | Takayuki Ohwaki | Eisai | 1 |