Patents
Patents for E21C 50 - Obtaining minerals from underwater, not otherwise provided for (408)
06/1991
06/14/1991CA2072119A1 Traction tooth for cutting wheels
11/1990
11/06/1990CA1275912C Deep sea mining process
09/1990
09/04/1990CA1273624A1 Device for submerged drilling of foundations
08/1990
08/22/1990EP0382726A1 Process and device for dredging silt in ports, waterways and the like.
11/1989
11/07/1989US4878711 Method and apparatus for mining of ocean floors
09/1989
09/26/1989CA1260022A1 Mining apparatus and jet pump therefor
02/1989
02/09/1989DE3725022A1 Underwater rope cutting process
02/07/1989US4802292 Continuous mining device for crust deposits, etc. and continuous line bucket method with turning movement
02/02/1989DE3744695A1 Method for dredging and dressing silt from harbours, waterways etc.
02/02/1989DE3724251A1 Verfahren und vorrichtung zum baggern von schlick aus hafen, wasserstrassen oder dergleichen Method and device for dredging of silt from harbor, water roads or the like
01/1989
01/26/1989WO1989000630A1 Process and device for dredging silt in ports, waterways and the like
09/1988
09/13/1988US4770255 Arrangement for underwater drilling of foundations
08/1988
08/24/1988EP0279735A1 Method for sea mining exploitation
05/1988
05/26/1988DE3638998A1 Apparatus for picking up mineral deposits from the sea bed
01/1988
01/12/1988US4718835 Mining apparatus and jet pump therefor
12/1987
12/10/1987DE3623930C1 Drive of an appliance for removing and conveying mineral raw materials from the sea bed
10/1987
10/21/1987EP0242307A1 Device for the under water drilling of foundations
08/1987
08/11/1987US4685742 Equipment for extracting ores from sea beds
08/06/1987DE3601461A1 Drive arrangement for extracting and conveying minerals from the sea bed
03/1987
03/24/1987US4652055 Device for collecting manganese nodules on the ocean floor
10/1986
10/28/1986US4619762 Devices for recovering polymetal compounds discharged from a submarine hydrothermal source
10/08/1986EP0196764A1 Mining apparatus and jet pump therefor
03/1986
03/11/1986US4575155 Pressure differential mining tool
09/1985
09/25/1985EP0155869A1 Installation for the extraction of minerals from the sea-bed
08/1985
08/06/1985US4533526 Collecting geothermal fluid and concentrating
09/1984
09/25/1984US4473256 Chisel barge with shock absorbing system for mast
05/1984
05/15/1984US4448145 Unmanned submarine vehicle
03/1984
03/27/1984US4438902 Pipe string lift system
11/1983
11/15/1983CA1157056A1 Method and apparatus for the recovery of sediments from the bottom of the sea by a suspended suction pipe
11/08/1983CA1156689A1 Submarine device for collecting modules on the seabed and for bringing them to the surface
09/1983
09/20/1983US4405176 Method for hydraulically mining unconsolidated subterranean mineral formations using remote support
08/1983
08/30/1983US4401345 Hydraulic borehole mining system
08/16/1983US4398361 Recovery of sediments from the bottom of the sea by suspended suction pipe
08/09/1983US4397503 Auriferous gravel interceptor
07/1983
07/05/1983US4391468 Method and apparatus for recovering mineral nodules from the ocean floor
06/1983
06/07/1983US4386473 Recovery of sediments from the bottom of the sea
05/1983
05/10/1983US4382361 Ocean floor dredge system having a pneumohydraulic means suitable for providing tripping and heave compensation modes
03/1983
03/01/1983CA1142187A1 Dredge head with mechanical and pumping action
11/1982
11/16/1982CA1135732A1 Method and apparatus for recovery of sediments from the bottom of the sea
11/09/1982US4357764 Submarine vehicle for dredging and raising minerals resting on the sea bed at great depths
08/1982
08/31/1982US4347029 Pipe transfer system
08/31/1982CA1130826A1 Dredging vessel
07/1982
07/20/1982US4340970 Power wheel
06/1982
06/29/1982CA1126764A1 Device for collecting solid bodies on an underwater bed
04/1982
04/06/1982US4323216 Balanced support plates
04/06/1982CA1121392A1 Auriferous gravel interceptor
03/1982
03/23/1982CA1120503A1 Ocean mining system
01/1982
01/19/1982US4311342 Dredge head with mechanical and pumping action
01/19/1982CA1116556A1 Apparatus and process for ordinary and submarine mineral beneficiation
11/1981
11/03/1981US4298229 Radiation-free
11/03/1981CA1111869A1 Suction nozzle dredge head
08/1981
08/18/1981CA1107308A1 Pivotable means for decreasing drag effects on a generally cylindrical dredge pipe
07/1981
07/28/1981US4280288 Modular draging unit for collecting solid bodies on an underwater bed
04/1981
04/07/1981CA1098920A1 Dredge head having forward water-deflecting means
12/1980
12/09/1980CA1091259A1 Extracting ores from the sea bottom
11/1980
11/25/1980CA1090201A1 Self propelled, uninhabited deap sea vehicle for use in dredging, loading and surface transportation of polymetallic nodules, arctic fishing and lifting of submerged bodies
11/12/1980EP0018891A1 Submarine vehicle for dredging and lifting minerals at a great depth
11/11/1980US4232903 Ocean mining system and process
11/11/1980CA1089500A1 Method of exploitation of a nodule deposit on a sea floor and a device for carrying out said method
11/04/1980US4231172 Floating dredger and treatment plant
11/04/1980US4231171 Method and apparatus for mining nodules from beneath the sea
10/1980
10/07/1980US4226035 Apparatus for continuously dredging submarine mineral deposit
08/1980
08/12/1980CA1083613A1 Stabilized hoist rig for deep ocean mining vessel
07/1980
07/29/1980CA1082795A1 Geophysical exploration
07/08/1980CA1081157A1 Device for use in the emptying of dredging buckets
05/1980
05/13/1980CA1077531A1 Independent unit for the collection and upward transfer of nodules which rest on an underwater bed
05/06/1980US4200999 Pivotable means for decreasing drag effects on a generally cylindrical dredge pipe
04/1980
04/29/1980US4200054 Stabilized hoist rig for deep ocean mining vessel
04/08/1980US4196531 Independent unit for the collection and upward transfer of nodules which rest on an underwater bed
04/08/1980CA1075283A1 Dredging bucket
04/01/1980US4195426 Extracting ores from the sea bottom
01/1980
01/29/1980US4185404 Nodule dredging bucket
01/23/1980EP0006867A1 Apparatus and process for ordinary and submarine mineral beneficiation
01/22/1980US4184583 Device for use in the emptying of dredging buckets
12/1979
12/18/1979US4178704 Suction nozzle dredge head
10/1979
10/23/1979US4171581 Water flow-deflecting shield for dredge suction nozzle
07/1979
07/31/1979CA1059539A1 Method and means for cavity mining minerals from a subsurface deposit
05/1979
05/08/1979CA1054165A1 Method device for collecting solid components immersed in water
02/1979
02/20/1979US4140346 Cavity mining minerals from subsurface deposit
02/20/1979US4140344 Extraction of organic matter from marine sediment
01/1979
01/25/1979WO1979000027A1 Apparatus and process for ordinary and submarine mineral beneficiation
12/1978
12/05/1978US4128229 Hoist apparatus with dual mast structure and compound power transmission system
10/1978
10/31/1978CA1041459A1 Apparatus for washing impurities out of granular material
10/17/1978US4120783 Slurrying, centrifuging
10/10/1978CA1040224A1 Apparatus for recovering minerals, in particular manganese nodules, from the bottom of the water
10/03/1978CA1039760A1 Mobile underwater device for excavating materials on the sea bed
04/1978
04/25/1978US4085973 Ocean floor surficial dredging apparatus
02/1978
02/28/1978US4076313 Underwater recovery apparatus
02/21/1978US4075599 Undersea geophysical exploration
10/1977
10/11/1977US4052800 System for gathering solids from the ocean floor and bringing them to the surface
10/04/1977US4052299 Apparatus for washing impurities out of granular material
08/1977
08/16/1977US4042279 Apparatus for recovering minerals, in particular manganese nodules, from the bottom of the water
08/09/1977US4040667 Apparatus for recovering particulate material from the sea bottom
07/1977
07/26/1977US4037874 Apparatus for underwater retrieval, selection and concentration of material for ocean mining
07/12/1977US4035022 Self-propelled pickup device for picking up materials lying on the bottom of the sea
05/1977
05/03/1977US4020573 Method and device for sucking up a solid substance from a stock
12/1976
12/28/1976US3999313 Towed sled for deep-sea particle harvest
12/14/1976US3996678 Free-fall grab
11/1976
11/02/1976US3988843 Mining transition chamber
08/1976
08/17/1976US3975054 Undersea mining and separating vehicle having motor-powered water jet
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