Showing 1–8 of 8 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Tomoyuki Nagayama | Duplo Seiko | 3 |
| 2 | Hideki Oiwa | Duplo Seiko | 2 |
| 2 | Kazuya Takitani | Duplo Seiko | 2 |
| 2 | Akane Tokutake | Duplo Seiko | 2 |
| #5 | Masayasu Matsumoto | Duplo Seiko | 1 |
| #5 | Takashi Ano | Kinki University | 1 |
| #5 | Kazuhito Oguri | Duplo Seiko | 1 |
| #5 | Akihiko Toki | Duplo Seiko | 1 |