Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11135670 | Method and system for submerged arc welding | Martin N. Andersson, Tomas Johansson, Rikard Ljungkvist | 2021-10-05 |
| 10994362 | Tandem arc welding head and a welding arrangement for overlapping arcs to a cold wire electrode | — | 2021-05-04 |
| 10913127 | Method for starting a submerged arc welding process and welding apparatus | Martin N. Andersson, Tomas Johansson, Rikard Ljungkvist | 2021-02-09 |