Top Inventors at General Refractories All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Francis W. Henry, Jr. | 5 |
| 2 | Joseph L. Stein | 3 |
| 3 | Henry E. Anthonis, III | 2 |
| #4 | Jeffrey Mazur | 2 |
| #5 | Merrill Wood, Jr. | 2 |
| #6 | Subrata Banerjee | 2 |
| #7 | Thomas Joseph Maskell | 2 |
| #8 | Franz J. Brodmann | 1 |
| #9 | George A. Russell, Jr. | 1 |
| #10 | Gunther L. Mortl | 1 |
| #11 | Howard L. Roenigk | 1 |
| #12 | Peter Frazier | 1 |
| #13 | Richard A. Snellgrove | 1 |
| #14 | Ronald Staut | 1 |
| #15 | Sudarsan C. Samanta | 1 |
| #16 | Wate T. Bakker | 1 |
| #17 | Richard C. Lipp | 1 |
| #18 | Ljubisa Rankovic | 1 |