Top Inventors at Katayama Special Industries All Time
Showing 1–9 of 9 inventors
| Rank | Name | Patents |
|---|---|---|
| 1 | Hirofumi Sugikawa | 18 |
| 2 | Hayashi Keiichi | 2 |
| 2 | Keiichi Hayashi | 2 |
| 2 | Michibata Sachio | 2 |
| 2 | Sugikawa Hirofumi | 2 |
| #6 | Misao Iguchi | 1 |
| #6 | Takuyuki Okano | 1 |
| #6 | Toshihiko Ikehata | 1 |
| #6 | Sachio Michibata | 1 |