Top Inventors at Stonehart Associates All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Paul Stonehart | 10 |
| 2 | Masahiro Watanabe | 9 |
| 3 | Kazunori Tsurumi | 8 |
| #4 | Nobuo Yamamoto | 5 |
| #5 | Toshihide Nakamura | 5 |
| #6 | Koichi Sakairi | 3 |
| #7 | Noriaki Hara | 3 |
| #8 | Haruko Sugimoto | 2 |
| #9 | Tomoyuki Tada | 2 |
| #10 | Yumi Yamamoto | 2 |
| #11 | Masahhiro Watanabe | 1 |
| #12 | Nobuhito Toshima | 1 |
| #13 | Takeshi Tozawa | 1 |