Showing 1–7 of 7 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Patrick M. Quinlan | Petrolite | 20 |
| 2 | Benjamin T. Outlaw | Petrolite | 4 |
| 3 | Ralph A. Heasley | Mallinckrodt | 1 |
| 3 | Reynolds L. Emerson | — | 1 |
| 3 | Donald F. Cairns | National Steel | 1 |
| 3 | David P. Hargraves | Emerson Electric | 1 |
| 3 | Saxon Cole | American Air Filter Company | 1 |
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