Showing 1–7 of 7 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | John A. Cobler | Gulf Research & Development | 2 |
| 2 | Donald R. Zaremski | Allegheny Ludlum Steel | 1 |
| 2 | Kenneth J. Swidwa | Westinghouse Electric | 1 |
| 2 | Joseph D. Kelly | Ppg Industries | 1 |
| 2 | Charles J. Hyatt | Ppg Industries | 1 |
| 2 | James L. Valimont | Ppg Industries | 1 |
| 2 | Anthony R. Marmo | Westinghouse Electric | 1 |
Part of Pennsylvania