Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6514013 | Anchor rod with surface areas and friction | Longfei Li | 2003-02-04 |
| 5096048 | Conveyor | Hans Lachner, Jörg Richter | 1992-03-17 |
| 4332317 | Scraper chain conveyor | Karl Bahre, Werner Boer, Jörg Richter, Gerald Seebacher | 1982-06-01 |
| 4293246 | Mine roof support structure | Werner Boer, Hans Lachner, Guenter Maschonat, Joerg-Michael Richter, Heinrich Schulte | 1981-10-06 |
| 4224843 | Tensioning device for simultaneously tensioning a plurality of bolts | Siegfried Heiermann, Hans Lachner, Jörg Richter, Peter Schungel, Kurt Togel | 1980-09-30 |
| 4216876 | Pressure operated coupler | — | 1980-08-12 |