Top Inventors at Sprout Co. All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Tanaka Tetsuro | 4 |
| 2 | Riichiro Harano | 3 |
| 3 | Masami Furusawa | 2 |
| #4 | Joya Satoshi | 1 |
| #5 | Kazuyoshi Takeda | 1 |
| #6 | Satoshi Joya | 1 |
| #7 | Toru Watari | 1 |
| #8 | Tohru Watari | 1 |
| Rank | Name | Patents |
|---|---|---|
| 1 | Tanaka Tetsuro | 4 |
| 2 | Riichiro Harano | 3 |
| 3 | Masami Furusawa | 2 |
| #4 | Joya Satoshi | 1 |
| #5 | Kazuyoshi Takeda | 1 |
| #6 | Satoshi Joya | 1 |
| #7 | Toru Watari | 1 |
| #8 | Tohru Watari | 1 |