| Patents for E21C 50 - Obtaining minerals from underwater, not otherwise provided for (408) |
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| 11/22/2012 | WO2012158028A1 Dredger provided with a remotely operable dredging vehicle, and method for dredging using such a dredger system |
| 11/15/2012 | WO2012153169A1 Apparatus and method for the dredging of sediments from the seabed |
| 11/15/2012 | CA2825501A1 Dredging apparatus and method for removing sediments from a water bed |
| 11/14/2012 | CN101586462B Method of suspending, completing and working over a well |
| 10/10/2012 | CN101705822B No-dilution isolation mining method for mid and thick sand deposits in shallow sea |
| 10/03/2012 | CN102704902A Natural gas hydrate exploiting method |
| 09/13/2012 | DE102011106905A1 Method for conveying methane from methane hydrate deposits, involves limiting current action area of deposit from surrounding by covering device, and releasing gas from gas hydrate by heating limited area |
| 08/08/2012 | CN202370522U Combined mining device of seabed gas hydrate electric spraying pump |
| 06/13/2012 | CN101545366B An underwater mining method and its devices |
| 05/30/2012 | CN101539018B Deep seafloor sampling device |
| 05/02/2012 | CN102434164A Marine polymetallic sulfide cutting device |
| 04/25/2012 | CN102425420A 海底集矿车 Seabed set tub |
| 04/11/2012 | CN102410023A 一种深海充气浮体球 Deep - Sea inflatable float ball |
| 03/28/2012 | CN102392646A Marine gas hydrate electronic-spraying pump composite exploitation method and apparatus |
| 02/08/2012 | CN202140087U 一种整体式尾矿深层回采平台 A monolithic deep mining tailings platform |
| 02/01/2012 | CN102337895A Method and device for exploiting sea natural gas hydrate |
| 01/25/2012 | CN101761340B Middle-waisted bidirectional filling and mining method under canopy guard in thick and great metal mine in sea bed |
| 01/19/2012 | WO2012008936A1 Production line for producing sapropel-based fertilizers |
| 01/18/2012 | CN102322264A Gas hydrate exploitation, well completion, collection and conveying platform system |
| 12/22/2011 | WO2011156867A1 A system for seafloor mining |
| 12/22/2011 | WO2011156866A1 Method and apparatus for bulk seafloor mining |
| 12/21/2011 | EP2396508A1 Method for converting hydrates buried in the waterbottom into a marketable hydrocarbon composition |
| 12/07/2011 | CN101666286B 一种海洋能源一体化开发系统 A MARINE energy integration development system |
| 11/23/2011 | CN202047822U Hydraulic system of hydraulic mining machine |
| 11/17/2011 | WO2011142319A1 Cutter head for underwater mining machine, underwater mining machine, and underwater mining system |
| 11/17/2011 | CA2793718A1 Underwater miner cutter head, underwater miner, and underwater mining system |
| 09/14/2011 | CN102182462A Track adhesive-removing method and device of deep-sea mining machine |
| 09/14/2011 | CN101746840B System for desalination of sea water by utilizing LNG cold energy |
| 08/31/2011 | CN102168561A Air lift method and air lift device in deep actual mining of tailings |
| 08/03/2011 | CN102140917A Heave compensation simulation test device for deep-sea mining |
| 08/03/2011 | CN101555797B Extraction device for undersea gas hydrate and extraction method thereof |
| 08/03/2011 | CN101240700B Free gas layer-containing natural gas hydrate mining simulator |
| 06/01/2011 | CN102080544A Method and device for cutting cobalt crust at high speed in deep sea |
| 05/25/2011 | CN102071937A Multi-metal sulfide mining shovel |
| 04/20/2011 | CN102027193A Promotion of methane hydrate decomposition and methane gas collecting system |
| 03/02/2011 | EP2288789A1 Device for extracting a material situated at the bottom of an expanse of water, extraction installation and associated method |
| 02/16/2011 | CN201747338U Natural gas hydrate simulating mining experimental apparatus |
| 01/20/2011 | US20110010967 Deep Undersea Mining System and Mineral Transport System |
| 01/06/2011 | WO2011001792A1 Method and equipment for dissociation of methane hydrate |
| 12/23/2010 | DE102009025654A1 System for removing soil deposits from water pools and for extracting minerals from water, has filter provided with brushes and linkages to prevent penetration of coarse particles under shut-off valve |
| 12/22/2010 | EP2262577A2 Separator for receiving a pressurized fluid containing as a minimum a solid material and a liquid, and associated device and method. |
| 12/08/2010 | CN101906971A New method and equipment for mining submarine cobalt crusts |
| 12/01/2010 | CN101519967B Method and device for extracting volcanogenic massive sulfide ore deposit on seabed |
| 12/01/2010 | CN101498219B Submarine hydrothermal solution sulfide mine mining vehicle |
| 10/13/2010 | CN201606080U 海洋钻机浮动钻进装置 Floating drilling unit Ocean Rig |
| 09/29/2010 | CN101382075B Ocean mining mechanism |
| 08/18/2010 | CN201554462U Pipe-type sand excavation equipment |
| 08/18/2010 | CN1920251B Method and device for natural gas hydrate exploitation with in-situ catalytic oxidation thermochemistry method |
| 07/08/2010 | DE202009017894U1 Anlage zur Entfernung von Bodenablagerungen aus einem Wasserbecken und zur Gewinnung von Bodenschätzen aus dem Wasser System for removing soil deposits from a pool of water and extraction of minerals from the water |
| 06/30/2010 | CN101761341A Simple wellhead frame structure and construction method |
| 06/30/2010 | CN101761340A Middle-waisted bidirectional filling and mining method under canopy guard in thick and great metal mine in sea bed |
| 05/19/2010 | CN101709646A Floating drilling device of offshore drill |
| 05/12/2010 | CN1690360B Method and system for exploiting seabed natural gas hydrates |
| 05/12/2010 | CN101705822A No-dilution isolation mining method for mid and thick sand deposits in shallow sea |
| 04/07/2010 | EP2171163A2 Device for extracting a material from the bed of a body of water and associated method |
| 02/03/2010 | CN100587227C Method for exploiting natural gas hydrates and device thereof |
| 01/07/2010 | WO2009125106A3 Separator for receiving a pressurized fluid containing at least one solid and one liquid material |
| 01/06/2010 | CN201377317Y Data acquisition, recording and warning system for offshore oil drilling platform |
| 12/09/2009 | CN201358791Y Rotary mechanism for acquiring submarine hydrothermal solution sulfide |
| 12/09/2009 | CN101598021A Exploration method for pressure bearing stored bitter and solid salts in saline |
| 11/25/2009 | CN101586462A Method of suspending, completing and working over a well |
| 11/19/2009 | US20090284068 System and method of utilizing monitoring data to enhance seafloor sulfide production for deepwater mining system |
| 11/12/2009 | WO2009136064A1 Device for extracting a material situated at the bottom of an expanse of water, extraction installation and associated method |
| 11/11/2009 | CN101575964A Experimental method and device for simulating exploitation of gas hydrates |
| 10/21/2009 | CN201330605Y Split frame of operation type mineral extraction vehicle walking on abyssal floor |
| 10/15/2009 | WO2009125106A2 Separator for receiving a pressurized fluid containing as a minimum a solid material and a liquid, and associated device and method. |
| 10/14/2009 | CN101555797A Extraction device for undersea gas hydrate and extraction method thereof |
| 09/30/2009 | CN201318177Y Underwater sand suction casing and underwater sand suction device |
| 09/23/2009 | CN101539018A Deep seafloor sampling device |
| 09/16/2009 | CN201310360Y Submarine mining mechanism |
| 09/02/2009 | CN101519967A Method and device for extracting volcanogenic massive sulfide ore deposit on seabed |
| 09/02/2009 | CN100535390C Deep-sea mineral mining equipment |
| 08/26/2009 | CN201297174Y Salt digging machine |
| 08/19/2009 | CN101509379A Deep water riser buoyance block closed-loop control system |
| 08/05/2009 | CN201284651Y Solid-state exploitation experiment simulating device for natural gas hydrate |
| 08/05/2009 | CN101498219A Submarine hydrothermal solution sulfide mine mining vehicle |
| 08/05/2009 | CN100523434C Dispersed deep-sea partial trial-mining system |
| 07/15/2009 | CN101482021A Iron manganese concretion gravity ore dressing vehicle |
| 07/15/2009 | CN101482020A Iron manganese concretion gravity ore dressing vehicle |
| 07/15/2009 | CN101482019A Iron manganese concretion inertia ore dressing vehicle |
| 07/15/2009 | CN101482018A Iron manganese concretion water screen ore dressing vehicle |
| 07/15/2009 | CN101482017A Iron manganese concretion mining vehicle |
| 05/13/2009 | CN201236709Y Anti-leap clamper for floater |
| 04/29/2009 | CN201228551Y Clawing latch jack |
| 03/12/2009 | WO2009013434A3 Device for extracting a material from the bed of a body of water and associated method |
| 03/11/2009 | CN101382075A Ocean mining mechanism |
| 03/04/2009 | CN201202477Y Sand suction stone tube telescoping device |
| 02/25/2009 | CN201198753Y Natural gas hydrate mining simulating device containing free gas layer |
| 02/05/2009 | WO2009016948A1 Promotion of methane hydrate decomposition and methane gas collecting system |
| 02/05/2009 | CA2694634A1 Methane hydrate dissociation accelerating and methane gas deriving system |
| 01/29/2009 | WO2009013434A2 Device for extracting a material from the bed of a body of water and associated method |
| 01/28/2009 | CN100455769C Method for extracting hydrate on bottom of sea by deep earth heart water circulation |
| 01/14/2009 | CN101344003A Mining methane, sequestering carbon dioxide and farming in oceans |
| 01/07/2009 | CN100449117C Extracting and conveying method and device of sea-bottom natural gas hydrate |
| 11/19/2008 | CN100434654C Cogeneration method for desalinating sea water and exploiting ocean natural gas hydrates |
| 08/13/2008 | CN101240700A Free gas layer-containing natural gas hydrate mining simulator |
| 08/13/2008 | CN100410490C High pressure water cutting refuse mine valuable metals recovering process and equipment thereof |
| 08/12/2008 | US7410220 Apparatus for assembling a liner |
| 05/21/2008 | CN101182771A Seabed gas hydrate mining methods and device |
| 05/14/2008 | CN201059190Y Automatic sandstone charging crane |