Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8780952 | Roof system for electric arc furnace and method for manufacturing the same | Thomas Schwer | 2014-07-15 |
| 4725045 | Slag-retaining plug for metal pouring operations | James R. Cutre, Donald K. Herald, Donald L. Herald | 1988-02-16 |
| 4526349 | Method and article of manufacture for controlling slag carry-over during tapping of a heat in steelmaking | — | 1985-07-02 |
| 4490173 | Steelmaking additive composition | — | 1984-12-25 |
| 4447265 | Method and composition for foaming slag in electric arc furnace | — | 1984-05-08 |
| 4417924 | Steelmaking additive composition | — | 1983-11-29 |