Issued Patents All Time
Showing 51–67 of 67 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6331694 | Fuel cell operated welder | — | 2001-12-18 |
| 6267291 | Coded and electronically tagged welding wire | Christopher Hsu | 2001-07-31 |
| 6248976 | Method of controlling arc welding processes and welder using same | — | 2001-06-19 |
| 6180920 | Electrode and method of making same | Edward A. Enyedy | 2001-01-30 |
| 6137081 | Electrode and method of making same | Edward A. Enyedy | 2000-10-24 |
| 6091612 | Universal power supply for arc welder | — | 2000-07-18 |
| 5357076 | Plasma torch with identification circuit | — | 1994-10-18 |
| 5351175 | Inverter power supply for welding | — | 1994-09-27 |
| 5349157 | Inverter power supply for welding | — | 1994-09-20 |
| 5338916 | Control circuit for alternating current TIG welder | Michael Hoffa, Gary A. Mikitin | 1994-08-16 |
| 5278728 | Diode mounting | Kenneth L. Justice | 1994-01-11 |
| 5278390 | System and method for controlling a welding process for an arc welder | — | 1994-01-11 |
| 5247152 | Plasma torch with improved cooling | — | 1993-09-21 |
| 5225657 | Plasma-arc torch system with filter | — | 1993-07-06 |
| 5208436 | Plasma torch with identification circuit | — | 1993-05-04 |
| 5105061 | Vented electrode for a plasma torch | — | 1992-04-14 |
| 4929811 | Plasma arc torch interlock with disabling control arrangement system | — | 1990-05-29 |