Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5088893 | Molten metal pump | Ronald E. Gilbert | 1992-02-18 |
| 5078572 | Molten metal pump with filter | Lutfi H. Amra, Ronald E. Gilbert | 1992-01-07 |
| 5028211 | Torque coupling system | Herbert L. Ritchie, Jr. | 1991-07-02 |
| 5025198 | Torque coupling system for graphite impeller shafts | Herbert L. Ritchie, Jr. | 1991-06-18 |
| 4973433 | Apparatus for injecting gas into molten metal | Ronald E. Gilbert, Harvey G. Martin | 1990-11-27 |
| 4940384 | Molten metal pump with filter | Lutfi H. Amra, Thomas Byrne, Harvey G. Martin, David Neff | 1990-07-10 |
| 4739974 | Mobile holding furnace having metering pump | — | 1988-04-26 |
| 4474315 | Molten metal transfer device | Ronald E. Gilbert | 1984-10-02 |