Showing 1–11 of 11 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Yasuyuki Okimura | Ngk Spark Plug Co. | 5 |
| 2 | Yasuhiro Taga | Brother Kogyo | 3 |
| 2 | Shinichi Sakurai | Daido Metal Company | 3 |
| #4 | Kazumi Harasaki | Murata Machinery | 2 |
| #4 | Hiroshige Hiramatsu | Brother Kogyo | 2 |
| #4 | Kaname Takai | Murata Machinery | 2 |
| #4 | Norimasa Osawa | Ngk Spark Plug Co. | 2 |
| #8 | Mitsuya Tokumoto | Murata Machinery | 1 |
| #8 | Norihiko Nadanami | Ngk Spark Plug Co. | 1 |
| #8 | Masazumi Fukushima | Murata Kikai | 1 |
| #8 | Hiromichi Inagaki | Chokoku Plast | 1 |