| Patents for E21C 45 - Methods of hydraulic mining; Hydraulic monitors (347) |
|---|
| 12/12/1991 | CA2064010A1 Drill head with nozzles |
| 11/28/1991 | DE4016965A1 Drilling head for tunnel boring - has central channel with nozzles directed to front and rear |
| 07/24/1991 | CN1013292B Hydraulic pulse generator |
| 02/26/1991 | US4995175 For underwater debris |
| 11/28/1990 | CN1010600B Double-barrel pulse-generating hydraulic monitor |
| 11/06/1990 | CA1275912C Deep sea mining process |
| 10/31/1990 | CN1010244B Hydraulic pulsetor |
| 10/24/1990 | CN2064413U Pulse water jet current generator |
| 08/15/1990 | CN1009214B Hydraulic pulse generator |
| 07/03/1990 | US4937956 Ocean floor dredging |
| 03/14/1990 | EP0357652A1 Pneumatic extraction head. |
| 03/06/1990 | US4906048 Method of downhole hydraulicking of mineral resources |
| 11/07/1989 | US4878711 Method and apparatus for mining of ocean floors |
| 09/26/1989 | CA1260022A1 Mining apparatus and jet pump therefor |
| 04/12/1989 | CN1032384A 液压脉冲发生器 Hydraulic pulse generator |
| 02/22/1989 | CN1031271A Hydraulic pulsetor |
| 02/09/1989 | DE3725022A1 Underwater rope cutting process |
| 02/08/1989 | EP0302762A1 Ocean floor dredging |
| 02/07/1989 | US4802292 Continuous mining device for crust deposits, etc. and continuous line bucket method with turning movement |
| 11/03/1988 | WO1988008470A1 Pneumatic extraction head |
| 09/06/1988 | CA1241672A1 Remotely sensing of excavation cavity during mining |
| 08/24/1988 | EP0279735A1 Method for sea mining exploitation |
| 07/27/1988 | CN87100252A Double-barrel pulse-generating hydraulic monitor |
| 07/13/1988 | CN87215341U Submerged excavation machine |
| 07/06/1988 | CN86108271A Hydraulic pulse generator |
| 05/03/1988 | CA1236128A1 Hydraulic mining method |
| 01/12/1988 | US4718835 Mining apparatus and jet pump therefor |
| 12/10/1987 | DE3623930C1 Drive of an appliance for removing and conveying mineral raw materials from the sea bed |
| 11/24/1987 | US4708395 Remotely sensing of excavation cavity during mining |
| 09/02/1987 | CN86204133U Remote-control nearby-cutting giant |
| 08/11/1987 | US4685742 Equipment for extracting ores from sea beds |
| 08/06/1987 | DE3601461A1 Drive arrangement for extracting and conveying minerals from the sea bed |
| 04/08/1987 | CN85107122A Testing method for layered reservoir without crossflow |
| 04/07/1987 | US4655916 Mining-type slurries |
| 03/24/1987 | US4652055 Device for collecting manganese nodules on the ocean floor |
| 03/04/1987 | CN85104448A Protective method of water-jet |
| 12/02/1986 | US4626031 Apparatus for loosening and/or breaking coal deposits, rocks, granular or lumpy material, or scrap |
| 10/28/1986 | US4619762 Devices for recovering polymetal compounds discharged from a submarine hydrothermal source |
| 10/22/1986 | CN85107582A Remotely sensing of excavation cavity during mining |
| 10/08/1986 | EP0196764A1 Mining apparatus and jet pump therefor |
| 07/30/1986 | EP0188924A1 Oceanographic method for lifting loads collected at a big depth, especially polymetallic nodules |
| 07/08/1986 | CA1207447A1 Method and apparatus for recording and playback of dynagraphs for sucker-rod wells |
| 06/03/1986 | US4592155 Dredger with transport basin having loading and unloading mechanism |
| 09/25/1985 | EP0155869A1 Installation for the extraction of minerals from the sea-bed |
| 09/24/1985 | CA1194048A1 High pressure feeder deflection compensation |
| 08/20/1985 | US4536035 Hydraulic mining method |
| 08/06/1985 | US4533526 Collecting geothermal fluid and concentrating |
| 03/12/1985 | US4503629 System for collecting and conveying undersea mineral resources |
| 02/05/1985 | US4497519 Metal particle recovery at sub-surface locations |
| 07/17/1984 | CA1170978A1 Modular hydraulic mining tool and improved method of hydraulically mining a mineral formation |
| 06/26/1984 | CA1169888A1 Dredging apparatus |
| 05/15/1984 | US4448145 Unmanned submarine vehicle |
| 03/06/1984 | US4435366 Discharging carrier bodies |
| 02/07/1984 | US4430029 High pressure feeder deflection compensation |
| 11/22/1983 | US4416860 Method and apparatus for recovering raw material, especially uranium, from natural waters, especially from the sea |
| 11/15/1983 | CA1157056A1 Method and apparatus for the recovery of sediments from the bottom of the sea by a suspended suction pipe |
| 11/08/1983 | CA1156689A1 Submarine device for collecting modules on the seabed and for bringing them to the surface |
| 11/01/1983 | CA1156270A1 Nodule collector |
| 10/18/1983 | US4409746 Vortex injection dredging apparatus and method |
| 08/16/1983 | US4398361 Recovery of sediments from the bottom of the sea by suspended suction pipe |
| 08/09/1983 | US4397503 Auriferous gravel interceptor |
| 06/07/1983 | US4386473 Recovery of sediments from the bottom of the sea |
| 03/01/1983 | CA1142187A1 Dredge head with mechanical and pumping action |
| 11/16/1982 | CA1135732A1 Method and apparatus for recovery of sediments from the bottom of the sea |
| 11/09/1982 | US4357764 Submarine vehicle for dredging and raising minerals resting on the sea bed at great depths |
| 10/19/1982 | CA1133955A2 Ocean mining system |
| 08/10/1982 | US4343098 Apparatus for mining nodules beneath the sea |
| 06/29/1982 | US4336662 Apparatus for collecting and raising materials from the ocean floor |
| 06/29/1982 | CA1126764A1 Device for collecting solid bodies on an underwater bed |
| 06/01/1982 | CA1124753A1 Conveying apparatus for the conveying of mud from great depths, more especially ore mud |
| 04/06/1982 | CA1121392A1 Auriferous gravel interceptor |
| 03/23/1982 | CA1120503A1 Ocean mining system |
| 01/19/1982 | US4311342 Dredge head with mechanical and pumping action |
| 01/12/1982 | CA1116188A1 Steerable ocean floor dredge vehicle |
| 11/03/1981 | CA1111869A1 Suction nozzle dredge head |
| 09/15/1981 | US4289355 Attachment flange for flexible conduit |
| 09/15/1981 | US4289275 Method and device for breaking a hard compact material |
| 08/18/1981 | CA1107308A1 Pivotable means for decreasing drag effects on a generally cylindrical dredge pipe |
| 07/28/1981 | US4280288 Modular draging unit for collecting solid bodies on an underwater bed |
| 04/28/1981 | US4264105 Siphon dredge mining system |
| 04/07/1981 | CA1098920A1 Dredge head having forward water-deflecting means |
| 03/24/1981 | US4257723 Device for sucking up solid materials or objects |
| 12/09/1980 | CA1091259A1 Extracting ores from the sea bottom |
| 11/25/1980 | CA1090201A1 Self propelled, uninhabited deap sea vehicle for use in dredging, loading and surface transportation of polymetallic nodules, arctic fishing and lifting of submerged bodies |
| 11/12/1980 | EP0018891A1 Submarine vehicle for dredging and lifting minerals at a great depth |
| 11/11/1980 | US4232903 Ocean mining system and process |
| 11/11/1980 | CA1089500A1 Method of exploitation of a nodule deposit on a sea floor and a device for carrying out said method |
| 11/04/1980 | US4231172 Floating dredger and treatment plant |
| 11/04/1980 | US4231171 Method and apparatus for mining nodules from beneath the sea |
| 10/07/1980 | US4226475 Underground mineral extraction |
| 10/07/1980 | US4226035 Apparatus for continuously dredging submarine mineral deposit |
| 08/12/1980 | CA1083613A1 Stabilized hoist rig for deep ocean mining vessel |
| 07/15/1980 | CA1081719A1 Method and apparatus for a combined hydraulic- mechanical recovery of extremely hard mineral raw material |
| 06/24/1980 | US4208813 Steerable ocean floor dredge vehicle |
| 05/13/1980 | CA1077531A1 Independent unit for the collection and upward transfer of nodules which rest on an underwater bed |
| 05/06/1980 | US4200999 Pivotable means for decreasing drag effects on a generally cylindrical dredge pipe |
| 04/29/1980 | US4200054 Stabilized hoist rig for deep ocean mining vessel |
| 04/15/1980 | CA1075729A1 Arrangement for transporting soil from the bottom of basins |
| 04/08/1980 | US4196531 Independent unit for the collection and upward transfer of nodules which rest on an underwater bed |
| 04/08/1980 | CA1075283A1 Dredging bucket |