Showing 1–8 of 8 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Takao Koyama | Mitsubishi Pencil Company, Limited | 3 |
| 2 | Kazuhiro Ami | Mitsubishi Pencil Company, Limited | 2 |
| 3 | Shoichi Saito | Olympus Optical Co. | 1 |
| 3 | Isamu Fukai | Sanden | 1 |
| 3 | Teruo Okada | Kabushiki Kaisha Toshiba | 1 |
| 3 | Hiroaki Koyama | Mitsubishi Pencil Company, Limited | 1 |
| 3 | Hiroyuki Yonetani | Ablic | 1 |
| 3 | Yoshiomi Konose | Mitsubishi Pencil Company, Limited | 1 |