Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4428769 | Process for injecting a reducing agent including ash-bearing bituminous coal into the hearth of a blast furnace | Raymond Limpach | 1984-01-31 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4428769 | Process for injecting a reducing agent including ash-bearing bituminous coal into the hearth of a blast furnace | Raymond Limpach | 1984-01-31 |