Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6639174 | Plasma torch provided with a ceramic protective cap | Michel Delzenne | 2003-10-28 |
| 6469274 | Oxygen arc cutting with plasma pre-heating of ferrous materials, such as structural steel workpieces | Michel Delzenne | 2002-10-22 |
| 6407358 | Process and unit for plasma-arc working with a gas having controlled O2 and N2 contents | Serge Suzon, Michel Delzenne | 2002-06-18 |
| 6333481 | Process and unit for plasma-arc working with a gas mixture based on hydrogen, nitrogen and/or argon | Andre Borne, Michel Delzenne | 2001-12-25 |