Top Inventors at Kurosawa Construction Co. All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Ryohei Kurosawa | 8 |
| 2 | Kei HIRAI | 3 |
| 3 | Takatsugu Fujikawa | 3 |
| #4 | Takeshi Hasui | 3 |
| #5 | Hitoyuki Takagi | 1 |
| #6 | Naoki Matsubara | 1 |
| #7 | Shigeru Hyakutake | 1 |
| Rank | Name | Patents |
|---|---|---|
| 1 | Ryohei Kurosawa | 8 |
| 2 | Kei HIRAI | 3 |
| 3 | Takatsugu Fujikawa | 3 |
| #4 | Takeshi Hasui | 3 |
| #5 | Hitoyuki Takagi | 1 |
| #6 | Naoki Matsubara | 1 |
| #7 | Shigeru Hyakutake | 1 |