Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6227282 | Process for the aluminothermic welding of rails with alloying of the weld metal in the rail head region | Frank Kuster, Gerhardus Johannes Mulder, Michael Steinhorst | 2001-05-08 |
| 4830611 | Process for welding a railway rail, aluminothermic heating blocks for use in the process, and method of making said aluminothermic heating blocks | Johannes Guntermann | 1989-05-16 |
| 4234334 | Arc control in plasma arc reactors | Richard Gold | 1980-11-18 |