Top Inventors at Harbison-Walker Refractories All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | John J. Stephansky | 6 |
| 2 | Edward L. Erny | 3 |
| 3 | John N. Snyder | 3 |
| #4 | John Thibault | 3 |
| #5 | Mark C. Langenohl | 3 |
| #6 | Robert M. Cullen | 3 |
| #7 | H. David Prior | 2 |
| #8 | John E. Berry | 2 |
| #9 | Xiangmin Li | 2 |
| #10 | Brian Joseph Bliss | 1 |
| #11 | Christopher L. Macey | 1 |
| #12 | Glenn H. McIntyre, III | 1 |
| #13 | Howard M. Winkelbauer | 1 |
| #14 | Jean-Guy St-Hilaire | 1 |
| #15 | Kevin Duda | 1 |
| #16 | Marc N. Palmisiano | 1 |
| #17 | Peter T. Sutor | 1 |
| #18 | Thomas R. Kleeb | 1 |
| #19 | Thomas N. Robich | 1 |
| #20 | Viktor Fischer | 1 |
| #21 | William J. Winters | 1 |
| #22 | Tony Grondin | 1 |