Top Inventors at Diafloc Co. All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Jun Hosoda | 4 |
| 2 | Ryoji Handa | 4 |
| 3 | Akihisa Furuno | 4 |
| #4 | Norimasa Yoshida | 3 |
| #5 | Nobuo Kurashige | 2 |
| #6 | Yasuo Ogawa | 2 |
| #7 | Hideaki Habara | 1 |
| #8 | Hitoshi Tamura | 1 |
| #9 | Kenzo Ariyama | 1 |
| #10 | Kenichi Inukai | 1 |
| #11 | Ken-ichi Inukai | 1 |
| #12 | Masaharu Nagahama | 1 |
| #13 | Shoichi Kanda | 1 |
| #14 | Teruzo Otsuka | 1 |
| #15 | Teruhiko Sugimori | 1 |
| #16 | Osamu Okushima | 1 |