Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6166681 | Measuring the thickness of materials | Gregory A. Meszaros, Roger Marquardt, David I. Walker, Frank L. Kemeny | 2000-12-26 |
| 6130637 | Measuring the thickness of hot slag in steelmaking | Gregory A. Meszaros, Roger Marquart, David J. Walker, Frank L. Kemeny | 2000-10-10 |