Top Inventors at Maeda Shell Service Co. All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Sadao Maeda | 8 |
| 2 | Isamu Ide | 1 |
| 3 | Keizo Nishiyama | 1 |
| #4 | Tatsuhiro Maeda | 1 |
| #5 | Toru Seki | 1 |
| Rank | Name | Patents |
|---|---|---|
| 1 | Sadao Maeda | 8 |
| 2 | Isamu Ide | 1 |
| 3 | Keizo Nishiyama | 1 |
| #4 | Tatsuhiro Maeda | 1 |
| #5 | Toru Seki | 1 |