Showing 1–6 of 6 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Norihiko Nadanami | Ngk Spark Plug Co. | 3 |
| 2 | Mutsumi Kitagawa | Ngk Insulators | 1 |
| 2 | Hiroshige Hiramatsu | Brother Kogyo | 1 |
| 2 | Kazuhiko Ogawa | Murata Machinery | 1 |
| 2 | Yasuyuki Okimura | Ngk Spark Plug Co. | 1 |
| 2 | Takuya HANDO | Ngk Spark Plug Co. | 1 |