Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6482354 | High-hardness powder metallurgy tool steel and article made therefrom | David E. Wert, Gregory J. Del Corso | 2002-11-19 |
| 4886640 | Hot work tool steel with good temper resistance | Raymond M. Hemphill, John F. McGraw, Michael L. Schmidt, Bruce A. Smith, David E. Wert | 1989-12-12 |