Showing 1–17 of 17 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Koh Yoshioka | Toyo Kohan Co. | 4 |
| 2 | Takashi Koshiro | Toyo Kohan Co. | 3 |
| 3 | Tooru Aramaki | — | 2 |
| 3 | Takafumi Hatakeda | Toyo Kohan Co. | 2 |
| 3 | Teppei Kurokawa | Toyo Kohan Co. | 2 |
| 3 | Etsuro TSUTSUMI | Toyo Kohan Co. | 2 |
| 3 | Shinichirou HORIE | Toyo Kohan Co. | 2 |
| 3 | Toshifumi KOYANAGI | Toyo Kohan Co. | 2 |
| #9 | Kunihiro Yoshimura | Toyo Kohan Co. | 1 |
| #9 | Michikazu Morimoto | Hitachi High-Technologies | 1 |
| #9 | Masakazu Miyaji | Hitachi High-Technologies | 1 |
| #9 | Tomoyasu Takenaga | Toyo Kohan Co. | 1 |
| #9 | Hirofumi Yamano | Toyo Kohan Co. | 1 |
| #9 | Hiroki YANAGA | Toyo Kohan Co. | 1 |
| #9 | Kazunori Nakamoto | Hitachi High-Technologies | 1 |
| #9 | Ryoichi Isomura | — | 1 |
| #9 | Yukiha Ishikawa | Toyo Kohan Co. | 1 |