Showing 1–11 of 11 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Takuya OZAKI | Nippon Piston Ring Co. | 5 |
| 2 | Tsugikatsu Odashima | — | 4 |
| 2 | Hideaki Kamiyama | Calsonic Kansei | 4 |
| #4 | Yukinori Karihara | Senju Sprinkler Co. | 3 |
| #5 | Noriaki Chida | Nippon Piston Ring Co. | 2 |
| #5 | Tsugane Hirase | Nippon Piston Ring Co. | 2 |
| #7 | Katsuya Iwabuchi | Nec Tokin Iwate | 1 |
| #7 | Yukako Sugawara | — | 1 |
| #7 | Kyohichi Itoh | Nissan Motor Co. | 1 |
| #7 | Masataka Okano | Nippon Piston Ring Co. | 1 |
| #7 | Hirofumi Oikawa | Ohtake Root Kogyo Co. | 1 |