Showing 1–11 of 11 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Takao Ohnishi | Ngk Insulators | 69 |
| 2 | Takeshi Mitsuoka | Ngk Spark Plug Co. | 38 |
| 3 | Masayasu Kurachi | Yutaka Mfg. Co. | 10 |
| #4 | Yoshinori Kamitani | Hoshizaki Denki | 8 |
| #5 | Yuta Oishi | Ngk Spark Plug Co. | 7 |
| #6 | Motohiro Hatano | Tokai Rubber Industries | 5 |
| #6 | Fujio Ninomiya | Toyoda Gosei Co. | 5 |
| #6 | Tomiyasu Kakeno | Aoyama Seisakusho Co. | 5 |
| #9 | Toshiharu Ohgoh | Eisai | 4 |
| #10 | Masaharu Araki | — | 3 |
| #11 | Toshihiko Kaneiwa | Asahi Organic Chemicals Industry Co. | 2 |