Showing 1–6 of 6 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Tetsuo Watanabe | Ricoh Company | 5 |
| 2 | Kenji Taniguchi | Kawano Paper Co. | 3 |
| 3 | Fumio Kurosu | Fujirebio | 2 |
| #4 | Norio Chiba | Seiko Instruments | 1 |
| #4 | Nayomon Uno | Ishikawajima-Harima Heavy Industries Co. | 1 |
| #4 | Yoshiya Muraki | Fukuda Denshi Co. | 1 |