| Patents for E21C 45 - Methods of hydraulic mining; Hydraulic monitors (347) |
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| 04/01/2010 | CA2735901A1 Deep sea mining riser and lift system |
| 02/17/2010 | CN101649742A Simple and convenient hydraulic mining method and equipment |
| 01/07/2010 | WO2010000289A1 A method of mining and processing seabed sediment |
| 01/07/2010 | WO2009125106A3 Separator for receiving a pressurized fluid containing at least one solid and one liquid material |
| 01/07/2010 | CA2729383A1 A method of mining and processing seabed sediment |
| 11/10/2009 | US7614705 Water spray assembly |
| 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. |
| 09/02/2009 | CN201301713Y Water recycling device of underground hydraulic mining machine |
| 07/22/2009 | CN201277039Y Simple hydraulic extraction apparatus |
| 07/22/2009 | CN201277038Y Hydraulic extraction cutter movement frame |
| 07/22/2009 | CN201277037Y Multi-hydraulic extraction cutter |
| 07/22/2009 | CN201277036Y Pre-mixing type full-enclosed abrasive material continuous adding and mixing apparatus |
| 03/26/2009 | US20090077835 Deep sea mining riser and lift system |
| 03/12/2009 | WO2009013434A3 Device for extracting a material from the bed of a body of water and associated method |
| 01/29/2009 | WO2009013434A2 Device for extracting a material from the bed of a body of water and associated method |
| 01/21/2009 | CN101349153A Easy hydraulic extraction machine |
| 06/19/2008 | WO2008073495A1 Extracting gas hydrates from marine sediments |
| 04/16/2008 | CN101161990A Method for realizing roof caving by using abrasive water jet |
| 02/14/2008 | WO2008019226A1 Coal reclamation apparatus and method |
| 12/05/2007 | EP1861549A1 A method for automated freeze dredging |
| 07/25/2007 | EP1811127A1 Method of mining the sea bed |
| 04/18/2007 | EP1774138A2 Procedure and apparatus for collection of free methane gas from the sea bottom |
| 03/14/2007 | CN1303963C Device for users having after-troubles resulting from damage to central nervous system and/or locomotor apparatus of body |
| 11/30/2006 | US20060265914 Work machine having boundary tracking system |
| 08/15/2006 | US7090153 Flow conditioning system and method for fluid jetting tools |
| 08/09/2006 | EP1687504A2 System for extracting natural gas hydrate |
| 07/25/2006 | US7080888 Dual nozzle hydro-demolition system |
| 04/13/2006 | WO2005120153A3 Method and system for deep sea drilling |
| 04/04/2006 | US7021675 Swivel assembly |
| 03/28/2006 | US7017684 Jet cutting device with deflector |
| 02/07/2006 | US6994159 System for extracting natural gas hydrate |
| 01/26/2006 | US20060016621 Method and system for deep sea drilling |
| 01/24/2006 | US6988775 Scrapping method of building and scrapping machine |
| 12/22/2005 | WO2005120153A2 Method and system for deep sea drilling |
| 10/06/2005 | WO2005093215A1 Collecting and lifting methods of manganese nodule and mining device |
| 08/31/2005 | CN2721719Y Automatic compensator of water supplying system for mine |
| 07/28/2005 | WO2005031116A3 Procedure and apparatus for collection of free methane gas from the sea bottom |
| 07/21/2005 | WO2005047637A3 System for extracting natural gas hydrate |
| 05/26/2005 | WO2005047637A2 System for extracting natural gas hydrate |
| 05/26/2005 | CA2544489A1 System for extracting natural gas hydrate |
| 05/05/2005 | US20050092482 System for extracting natural gas hydrate |
| 04/07/2005 | WO2005031116A2 Procedure and apparatus for collection of free methane gas from the sea bottom |
| 04/07/2005 | US20050072301 Procedure and apparatus for collection of free methane gas from the sea bottom |
| 03/23/2005 | CN2687337Y Sand-washing mechanism for sand collecting boat |
| 02/16/2005 | CN1580489A Hydraulic coal extraction |
| 02/15/2005 | US6854537 Portable placer exploration and sampling apparatus |
| 02/08/2005 | US6851206 Method and apparatus for mining and metallurgically processing granular ore |
| 12/09/2004 | US20040244227 The procedure and the apparatus for the extraction of methane gas from the sea bottom |
| 11/25/2004 | US20040232692 Swivel assembly |
| 07/08/2004 | WO2003102347A3 Procedure and apparatus for the extraction of methane gas from the sea bottom |
| 06/17/2004 | US20040113482 Portable placer exploration and sampling apparatus |
| 04/15/2004 | US20040068894 Method and apparatus for mining and metallurgically processing granular ore |
| 03/09/2004 | US6702204 Cavitating jet |
| 02/19/2004 | WO2004015244A1 Method of barge mining oil sands |
| 02/12/2004 | CA2397574A1 Method of barge mining tar sands |
| 02/10/2004 | US6688702 Borehole mining method |
| 12/11/2003 | WO2003102347A2 Procedure and apparatus for the extraction of methane gas from the sea bottom |
| 11/20/2003 | US20030214175 Procedure and the apparatus for the extraction of methane gas from the sea bottom |
| 09/24/2003 | CN1444468A Device for users having after-troubles resulting from damage to central nervous system and/or locomotor apparatus of body |
| 03/13/2003 | US20030047622 Cavitating jet |
| 01/14/2003 | US6505892 Softwall mining method and device |
| 08/20/2002 | US6435620 Multiple jet hydrodemolition apparatus and method |
| 01/24/2002 | WO2001065049A3 Cavitating jet |
| 01/10/2002 | WO2002002909A1 Softwall mining method and device |
| 01/10/2002 | CA2430662A1 Softwall mining method and device |
| 09/07/2001 | WO2001065049A2 Cavitating jet |
| 08/09/2001 | US20010011841 Multiple jet hydrodemolition apparatus and method |
| 05/09/2001 | CN1294648A Method for extracting methane hydrate on ocean floor |
| 10/26/2000 | DE19917946A1 Ignition method for explosive material using fluid jet cutting is based on determination of which thermodynamic, kinematic and dynamic conditions lead to ignition |
| 09/27/2000 | CN1056907C Apparatus for movement along underground passage and method using the same |
| 08/17/2000 | WO2000047832A1 Method for extracting methane hydrate on the ocean floor |
| 08/17/2000 | DE19906147A1 Verfahren zur Gewinnung von gefrorenem Gas auf dem Meeresgrund A process for obtaining a frozen gas on the seabed |
| 08/17/2000 | CA2328859A1 Method for extracting methane hydrate on the ocean floor |
| 10/26/1999 | US5971667 Apparatus for movement along an underground passage and method using same |
| 10/17/1998 | CA2223675A1 Automated quarry operation with communication interface |
| 12/24/1997 | CN1168711A Apparatus for movement along an underground passage and method using same |
| 12/04/1997 | DE19622241A1 Method for breaking up hard materials by jets of fluid in tunnelling or mining by galleries |
| 05/07/1997 | CN2253776Y Hydraulic qurrying device |
| 04/30/1997 | CN2253391Y Hydraulic combined collecting device for deep-sea multi-metal nodule production |
| 12/11/1996 | CN2242335Y Plastic water draining cylinder |
| 09/18/1996 | CN2235503Y Hydraulic water power coal obtg. equipment |
| 06/26/1996 | EP0717811A1 Process and device for cutting and large surface excavating solid materials |
| 04/18/1996 | WO1996011324A1 Apparatus for movement along an underground passage and method using same |
| 03/19/1996 | US5500136 Simulated gold and gemstone mining operation |
| 01/18/1996 | WO1996001361A1 Process and device for cutting and large surface excavating solid materials |
| 01/11/1996 | DE4423477A1 Verfahren zum Strahlschneiden mit Explosivstoffen Method for Cutting with explosives |
| 01/10/1996 | EP0484473B1 Drill head with nozzles |
| 07/11/1995 | US5431483 Submarine solution mining containment and regulation cover and method |
| 03/29/1995 | CN1100773A 气动水力采煤设备 Pneumatic hydraulic mining equipment |
| 10/27/1994 | DE4313293A1 Method of working semicircular to circular panels in wet extraction |
| 08/25/1994 | DE4306333A1 Method and apparatus for producing stable trenches in the earth, loose rock or the like on the basis of hydraulic extraction |
| 08/03/1994 | CN1090369A Impulse booster |
| 07/12/1994 | US5328250 Self-propelled undersea nodule mining system |
| 06/21/1994 | US5322134 Drill head |
| 03/23/1994 | CN2159413Y Unpowered negtive-pressure water supply apparatus for mineral shaft |
| 01/05/1994 | CN1080355A Quick-communicating method of halogen-production vertical well and apparatus thereof |
| 07/30/1993 | CA2107228A1 Blasting method and composition |
| 12/16/1992 | CN1019520B Testing method for layered reservoir without crossflew |
| 01/22/1992 | EP0357652B1 Pneumatic extraction head |
| 12/12/1991 | WO1991019074A1 Drill head with nozzles |