| Patents for E21C 25 - Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (2,629) |
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| 07/31/2003 | WO2003062587A1 Carrier for a flying cutting disk mounting |
| 07/24/2003 | US20030137184 Rotary cutting head for a mining etc machine |
| 07/23/2003 | EP1276969A4 Mining machine and method |
| 07/17/2003 | DE10235144C1 Mechanical drive for open-caste mining device has central drive unit and distribution drive for driving external drives at either side of grab drum |
| 06/19/2003 | WO2003050391A2 Mining method for steeply dipping ore bodies |
| 06/19/2003 | CA2469578A1 Mining method for steeply dipping ore bodies |
| 06/05/2003 | DE10158603C1 Mini-Diskmeissel Mini-Diskmeissel |
| 05/29/2003 | US20030098182 Mini disk bit |
| 05/15/2003 | DE19931969C2 Mittel zur Reduzierung der Verluste bei der Aufnahme und Zwischenförderung gelösten Gutes für ein Tagebaugewinnungsgerät Means of reducing the losses in the admission and intermediate transport dissolved good for a surface mining equipment |
| 05/13/2003 | US6561590 Cutting device with rotating disc |
| 04/30/2003 | DE20302648U1 Water jet cutting system has a hand controlled cutting head with integral drive and with flexible hose connection to water supply |
| 04/24/2003 | US20030077274 Particularly in high-risk individuals |
| 04/24/2003 | US20030075970 Mining machine and method |
| 04/17/2003 | DE10205124C1 Extraction machine, for digging out hard rock e.g. platinum ore, has an eccentric shaft through a sleeve supported in a housing, as the drive for a cycloid gear to power the cutters |
| 03/19/2003 | CN2540508Y Large diameter plain barrel drilling machine for maine |
| 03/12/2003 | CN1401882A Driving cutting device |
| 03/06/2003 | US20030042784 Highwall mining system |
| 02/12/2003 | CN1396982A Mining machine and method |
| 01/23/2003 | WO2003006791A1 Rolling rock cutters |
| 01/22/2003 | EP1276969A1 Mining machine and method |
| 01/22/2003 | CN2532239Y Electric drawing coal excavator |
| 01/03/2003 | WO2003001031A1 Tool head and tool for mining of rock material |
| 10/31/2002 | US20020158503 Drum-type dual channel water-jet assisted cutting head |
| 10/03/2002 | WO2002048506A3 Self-propelled remote mining conveyor,method and apparatus therefor |
| 09/19/2002 | US20020130546 Method and apparatus for remote self-propelled conveying in mineral deposits |
| 09/17/2002 | US6449883 Method and device for dredging underwater ground layers |
| 09/12/2002 | US20020125760 Method and apparatus for remote self-propelled conveying in mineral deposits |
| 09/10/2002 | CA2060288C Non-exposive mining |
| 08/29/2002 | WO2002066793A1 Tool head and tool for undercutting |
| 08/20/2002 | US6435620 Multiple jet hydrodemolition apparatus and method |
| 07/18/2002 | US20020093239 Cutting device |
| 07/17/2002 | EP1222334A1 Cutting apparatus for removal of road surfaces and other mining and earth removal operations |
| 07/09/2002 | US6416134 Underground auger system |
| 06/27/2002 | WO2002050401A1 Cutter head and rock excavator |
| 06/27/2002 | DE10156438A1 Steinschneidevorrichtung Stone cutter |
| 06/25/2002 | US6409276 Water-jet assisted drum-type mining system |
| 06/20/2002 | WO2002048506A2 Self-propelled remote mining conveyor,method and apparatus therefor |
| 06/20/2002 | CA2431648A1 Self-propelled remote mining conveyor, method and apparatus therefor |
| 06/13/2002 | US20020070601 Rock cutting apparatus |
| 06/12/2002 | CN2494874Y Pick antithrow off apparatus for coal cutting machine |
| 06/06/2002 | DE10059841C1 Trenching drum, for continuous open-pit mining extraction system, has encapsulated drives at both ends of body pipe, which reinforce outer zones of mantle through rotating drive housings |
| 05/14/2002 | US6385868 Jet excavating device |
| 04/11/2002 | US20020041872 Methods of delaying development of CEA-associated tumors using anti-idiotype antibody 3H1 |
| 04/02/2002 | US6364418 Cutting heads for horizontal remote mining system |
| 03/13/2002 | CN2481849Y Multifunctional multi-disk saw |
| 02/27/2002 | CN2479212Y Cutting chain with roller and cleaner |
| 02/14/2002 | WO2002012677A2 A coal and rock cutting pick |
| 02/13/2002 | CN2476642Y Impact-tooth-type cutting head |
| 01/30/2002 | CN2474723Y Mine use explosion proof grooving machine |
| 01/09/2002 | CN2470535Y Slotted wedge-typ pick drum of coal-cutting machine |
| 01/03/2002 | WO2002001045A1 Advance working machine or extraction machine for extracting rocks |
| 12/13/2001 | WO2001023157A3 Method and apparatus for quarrying rock |
| 11/28/2001 | EP1157190A1 Cutting device |
| 11/14/2001 | EP1153200A1 Rock boring device |
| 11/13/2001 | US6315365 Mining machine with core breakers |
| 11/01/2001 | WO2001081726A1 Mining machine and method |
| 11/01/2001 | US20010035674 Jet excavating device |
| 10/31/2001 | DE10024129C1 Hammer boring tool for stone and similar materials has chisel on wobble tube which can be moved radially to centrally running milling drive |
| 10/17/2001 | CN1318129A Mining machine and mining method |
| 10/03/2001 | CN1072302C Digging method and system for controlled fragmentation and removing of material |
| 09/27/2001 | DE10008450C1 Test drilling to assess the risk of a rock fall at a coal mine uses high pressure water jets to drill into the mine seam with measurements of at least one drilling parameter to be correlated with the level of danger |
| 09/25/2001 | US6293628 Hydraulic scroll auger mining system and method of using the same |
| 09/20/2001 | US20010022464 Mining machine |
| 08/29/2001 | CN1310285A Technological method of raising exploitation efficiency in work area of coal mine |
| 08/23/2001 | US20010015573 Method and apparatus for remote self-propelled conveying in mineral deposits |
| 08/14/2001 | US6273512 Hydrovac excavating blast wand |
| 08/09/2001 | US20010011841 Multiple jet hydrodemolition apparatus and method |
| 08/08/2001 | CN2441974Y Round saw type coal cutter and entry driving machine cutter |
| 08/07/2001 | US6270163 Mining machine with moveable cutting assembly and method of using the same |
| 07/04/2001 | EP0815337B1 Traction boring device using multiple trepans for producing large cuts in concrete works and the like and method of producing cuts |
| 06/27/2001 | EP1109988A1 Jet excavating device |
| 06/19/2001 | US6247758 Longwall coal cutter and loader |
| 06/12/2001 | US6244664 Extendable end assembly for a mine face cutting roller |
| 06/05/2001 | US6243625 Automated quarry operation with communication interface |
| 05/02/2001 | CN2428571Y Hydraulic anti-burst formed-coal-cutting machine |
| 05/01/2001 | US6224163 Milling roller module for a surface miner |
| 04/24/2001 | US6220670 Method and apparatus for remote self-propelled conveying in mineral deposits |
| 04/18/2001 | CN2426918Y Full-automatic carbon cutter |
| 04/05/2001 | WO2001023157A2 Method and apparatus for quarrying rock |
| 04/04/2001 | CN2426014Y Torsion impact type vibration cutting mechamism |
| 03/21/2001 | EP0960264B1 Hewing or cutting roller with variable cutting width |
| 03/09/2001 | CA2292152A1 Hydrovac excavating blast wand |
| 03/01/2001 | DE19940974A1 Cutting roll for mining machine; has one or more cutting threads in support pipe and open cusp with several fragments, which are not connected together as well as pick holder with cutting tools |
| 02/15/2001 | WO2001011192A1 Device for loosening and transporting mineral raw material outcropping in the form of seams, especially coal |
| 02/15/2001 | DE19937695A1 Vorrichtung zum Lösen und Fördern von flözartig anstehenden mineralischen Rohstoffen, insbesondere von Kohle Device for releasing and promoting flözartig pending mineral resources, especially coal |
| 02/14/2001 | CN1062051C Impact coal cutting machine |
| 02/01/2001 | WO2000060213A3 Water jet assisted drum-type mining system |
| 01/18/2001 | DE19931969A1 Device to reduce loss of released goods during uptake and intermediate conveying for an open mining device with a milling roller and a discharge band; has locking rings to form simple labyrinth |
| 01/11/2001 | WO2001002692A1 Jet excavating device |
| 12/21/2000 | WO2000077346A1 Cutter loader |
| 12/21/2000 | DE19927364A1 Walzenschrämlader Shearer |
| 11/29/2000 | EP1055033A1 Method for working through ground and rock layers with dredgers or excavators and apparatus operating according to this method |
| 11/28/2000 | US6152356 Hydraulic mining of tar sand bitumen with aggregate material |
| 11/23/2000 | WO2000070149A1 Cutting apparatus for removal of road surfaces and other mining and earth removal operations |
| 11/23/2000 | CA2410989A1 Cutting apparatus for removal of road surfaces and other mining and earth removal operations |
| 11/14/2000 | US6145933 Method for removing hard rock and concrete by the combination use of impact hammers and small charge blasting |
| 10/31/2000 | US6139477 Process for producing slots, grooves, and planar excavations |
| 10/12/2000 | WO2000060213A2 Water jet assisted drum-type mining system |
| 08/10/2000 | WO2000046486A1 Cutting device |
| 08/10/2000 | WO2000015947A9 Mining machine and mining method |