Showing 1–9 of 9 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | H. Richard Landis | Landis Plastics | 4 |
| 2 | Robert R. Patzelt | Nalco Chemical | 2 |
| 2 | Robert P. Radwill | Amsted Industries Incorporated | 2 |
| 2 | Yordan Vulich | Ait Industries | 2 |
| #5 | William R. Bradshaw | — | 1 |
| #5 | Charles Batzel | — | 1 |
| #5 | Ralph DeFalco | — | 1 |
| #5 | Norbert W. Zawacki | Unknown | 1 |
| #5 | John Dvorscek | Rostoker | 1 |
Part of Illinois