Showing 1–13 of 13 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Koh Yoshioka | Toyo Kohan Co. | 4 |
| 2 | Shinichirou HORIE | Toyo Kohan Co. | 2 |
| 3 | Satoko HARADA | Toyo Kohan Co. | 1 |
| 3 | Etsuro TSUTSUMI | Toyo Kohan Co. | 1 |
| 3 | Shunki OBATA | Toyo Kohan Co. | 1 |
| 3 | Keishi KATSURA | Toyo Kohan Co. | 1 |
| 3 | Daisuke MATSUSHIGE | Toyo Kohan Co. | 1 |
| 3 | Masashi Ikebuchi | Toyo Seikan Co. | 1 |
| 3 | Kenjirou Tanaka | Toyo Kohan Co. | 1 |
| 3 | Misato UENO | Toyo Kohan Co. | 1 |
| 3 | Yoshimi Itoh | Toyo Kohan Co. | 1 |
| 3 | Kyoko Takano | Toyo Kohan Co. | 1 |
| 3 | Toshifumi KOYANAGI | Toyo Kohan Co. | 1 |