Top Inventors at Toyo Pulp Co. All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Morimasa Hanaya | 2 |
| 2 | Koichi Kinbara | 1 |
| 3 | Masayuki Oshima | 1 |
| #4 | Norimaro Sugimoto | 1 |
| #5 | Toshio Hidaka | 1 |
| #6 | Toshitaka Nakazawa | 1 |
| #7 | Yasue Arai | 1 |
| #8 | Yasuhiko Matsui | 1 |
| #9 | Makoto Kikuiri | 1 |
| #10 | Yoshimi Nakashio | 1 |