Showing 1–1 of 1 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Helvio Ferreira Da Silva | Petróleo Brasileiro S.A.—Petrobras | 2 |
2 patents · 1 inventors
Ranked #87,345 of 111,555 cities Top 80%
Showing 1–1 of 1 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Helvio Ferreira Da Silva | Petróleo Brasileiro S.A.—Petrobras | 2 |