Showing 1–6 of 6 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Kensuke Masuda | Ricoh Company | 11 |
| 2 | Takashi Nasu | Asahi Yukizai | 2 |
| 2 | Hiroyuki Ueyama | Ebara | 2 |
| #4 | Tsuneo Hoki | Asahi-Dow | 1 |
| #4 | Seiichiro Ikawa | Coopervision International Limited | 1 |
| #4 | Junichi Iwata | Ricoh Company | 1 |