Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8074704 | Method and apparatus for semi-continuous casting of hollow ingots and products resulting therefrom | Alan BLACKBURN, Andrew PURSE, David May | 2011-12-13 |
| 5922273 | Modular hearth arrangement for cold hearth refining | Joseph A. Knecht, Dana King, Alan BLACKBURN | 1999-07-13 |