| Patents for E21C 45 - Methods of hydraulic mining; Hydraulic monitors (347) |
|---|
| 04/01/1980 | US4195885 Method and device for breaking a hard compact material |
| 04/01/1980 | US4195426 Extracting ores from the sea bottom |
| 02/26/1980 | CA1072587A1 Method and device for breaking a hard compact material |
| 02/20/1980 | EP0007921A1 Under water drum collector with a tower for collecting manganese nodules on the sea bottom |
| 01/29/1980 | US4185404 Nodule dredging bucket |
| 01/29/1980 | CA1070610A2 Subterranean drilling and slurry mining |
| 01/01/1980 | US4181363 Mining method and mining machine for cutting away hard mineral materials |
| 12/18/1979 | US4178704 Suction nozzle dredge head |
| 10/23/1979 | US4171674 Fairing for pipes |
| 10/23/1979 | US4171581 Water flow-deflecting shield for dredge suction nozzle |
| 10/09/1979 | CA1063930A2 Subterranean mining apparatus and method |
| 09/11/1979 | CA1062153A2 Subterranean mining apparatus and method |
| 08/07/1979 | CA1059841A1 Fairing for pipes |
| 05/08/1979 | CA1054165A1 Method device for collecting solid components immersed in water |
| 02/20/1979 | US4140344 Extraction of organic matter from marine sediment |
| 10/10/1978 | CA1040224A1 Apparatus for recovering minerals, in particular manganese nodules, from the bottom of the water |
| 10/03/1978 | CA1039760A1 Mobile underwater device for excavating materials on the sea bed |
| 04/25/1978 | US4085973 Ocean floor surficial dredging apparatus |
| 02/28/1978 | US4076311 Hydraulic mining from tunnel by reciprocated pipes |
| 12/06/1977 | US4061399 Mining by insertion of cutting modules into shaft for connection and actuation |
| 10/25/1977 | US4055006 Deep-sea ore collecting and hoisting apparatus |
| 10/11/1977 | US4053181 Seabed mining utilizing circulating current based on water level differences |
| 10/11/1977 | US4052800 System for gathering solids from the ocean floor and bringing them to the surface |
| 08/16/1977 | US4042279 Apparatus for recovering minerals, in particular manganese nodules, from the bottom of the water |
| 08/09/1977 | US4040667 Apparatus for recovering particulate material from the sea bottom |
| 07/12/1977 | US4035023 Apparatus and process for hydraulic mining |
| 07/12/1977 | US4035022 Self-propelled pickup device for picking up materials lying on the bottom of the sea |
| 06/21/1977 | US4030216 Method of and apparatus for underwater hydraulic conveying, as for ocean mining and the like, and continued transport of material in controlled floating containers |
| 03/15/1977 | US4012076 Process for hydraulically mining coal |
| 03/08/1977 | US4010560 Deep sea mining apparatus and method |
| 12/21/1976 | US3998061 Formation of cavities in the bed of a sheet of water |
| 12/14/1976 | US3996678 Free-fall grab |
| 12/07/1976 | US3995908 Hydraulic-mechanical coal mining combine |
| 11/02/1976 | US3988843 Mining transition chamber |
| 09/21/1976 | US3981541 Shallow underground coal slurry concentration sump |
| 08/24/1976 | US3975841 Ship and pier for extraction of valuable materials from the sea bed |
| 08/17/1976 | US3975054 Undersea mining and separating vehicle having motor-powered water jet |
| 08/10/1976 | US3973575 Mining concentrator |
| 08/03/1976 | US3972566 Solids concentrator |
| 07/27/1976 | US3971593 Method of extraction of nodular sediments or the like from the sea floor and an installation for carrying |
| 07/13/1976 | US3968579 Apparatus for sediment dredging and ocean mineral gathering |
| 05/04/1976 | US3954655 Radioactivity |
| 04/13/1976 | US3950030 Underwater mining |
| 04/06/1976 | US3947980 Process and apparatus for deep-sea particle harvesting |
| 03/16/1976 | US3943868 Heave compensation apparatus for a marine mining vessel |
| 03/16/1976 | US3943644 Mining dredge having endless bucket conveyor and flexible guide train |
| 01/27/1976 | US3934935 Hydraulic mining of oil bearing formation |