Showing 1–22 of 22 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Tsutomu Ishii | — | 5 |
| 2 | Akira Fujishima | Unknown | 4 |
| 3 | Tomohiro Fuma | Ngk Spark Plug Co. | 3 |
| 3 | Junichi Nakaho | Mitsubishi Electric | 3 |
| 3 | Kaoru Suzuki | Kabushiki Kaisha Toshiba | 3 |
| 3 | Akihiro Misawa | Toyoda Gosei Co. | 3 |
| #7 | Masayoshi Matsui | Ngk Spark Plug Co. | 2 |
| #7 | Akira Iriguchi | Brother Kogyo | 2 |
| #7 | Katsuhide Manabe | Toyoda Gosei Co. | 2 |
| #7 | Tomonori Niwa | Ngk Spark Plug Co. | 2 |
| #7 | Masato Fuma | Sanyo Electric Co. | 2 |
| #7 | Nobutaka Hiramatsu | Daido Metal Company | 2 |
| #7 | Yasushi Sakakura | Ngk Spark Plug Co. | 2 |
| #14 | Tadanobu Iwasa | Toyoda Gosei Co. | 1 |
| #14 | Joji Kasugai | Toyoda Gosei Co. | 1 |
| #14 | Toshihide Inoue | Toray Industries | 1 |
| #14 | Motoharu Yoshida | Aisin Seiki Kabushiki Kaisha | 1 |
| #14 | Yoshiteru Hattori | Brother Kogyo | 1 |
| #14 | Tokunori Kato | Brother Kogyo | 1 |
| #14 | Shigeaki Tamaki | Hoshizaki Denki | 1 |
| #14 | Keiichi Noda | Ngk Spark Plug Co. | 1 |
| #14 | Katsunobu Sakane | Toyoda Gosei Co. | 1 |