Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6237968 | Pipe connector having a connecting portion formed onto one pipe end | — | 2001-05-29 |
| 4640650 | Hydraulically operated unit for roof support | Manfred Koppers, Friedel Amling | 1987-02-03 |
| 4630973 | Peripherally flexible prop arch for mining tracks, tunnels or the like | Peter Heintzmann, Manfred Koppers, Lothar Domanski | 1986-12-23 |
| 4620748 | Method of and arrangement for loosening, loading and transporting of stratified minerals in underground elongated front longwalls | Peter Heintzmann, Manfred Koppers, Heinz Kunzer | 1986-11-04 |
| 4610424 | Shut-off valve | Manfred Koppers, Kuno Guse, Friedel Amling | 1986-09-09 |
| 4602896 | Clamping connection device for flanged through sections of support structures | Lothar Domanski, Manfred Koppers, Werner Mennekes, Dieter Moebus, Rudolf Turowski | 1986-07-29 |
| 4586530 | Arrangement for supplying of consumers with pressure fluids | Peter Heintzmann, Manfred Koppers, Rolf-Peter Smektala | 1986-05-06 |
| 4576524 | Rock anchor arrangement | Peter Heintzmann, Manfred Koppers, Gerhard Hecken | 1986-03-18 |
| 4572480 | Hydraulic prop | Peter Heintzmann, Manfred Koppers, Friedel Amling | 1986-02-25 |
| 4465404 | Wall element for an underground gallery | Peter Heintzmann, Manfred Koppers, Lothar Domanski | 1984-08-14 |
| 4440526 | Rock anchoring arrangement | Manfred Koppers, Bernhard Stephan | 1984-04-03 |
| 4437562 | Chain bucket conveyor | Manfred Koppers, Heinz Kunzer | 1984-03-20 |
| 4332512 | Arrangement for erecting columnar supporting elements for underground excavations | Peter Heintzmann, Manfred Koppers | 1982-06-01 |
| 4277204 | Excavation roof support and method of installing the same | Manfred Koppers, Harry J. Fitzgerald | 1981-07-07 |
| 4255071 | Supporting of excavation roofs | Manfred Koppers, Klaus Spies | 1981-03-10 |
| 4185873 | Machine for mechanically advancing clean cut underground mining galleries of various profiles | Kuno Guse | 1980-01-29 |
| 4183700 | Walking mine support | Gerhard von Klinggraff, Heinz Kunzer, Peter Marr | 1980-01-15 |