| Patents for E02D 19 - Keeping dry foundation sites or other areas in the ground (2,850) |
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| 12/05/1991 | DE4017676A1 Redox generator - for recovery of energy from chemical conversions such as oxidn. or redn. |
| 12/03/1991 | CA1292755C Method and apparatus for making a slurry trench or wall in the soil |
| 11/27/1991 | CN1014915B Infiltration-draining method for underground structure |
| 11/26/1991 | US5067416 Process for producing an acid-resistant barrier seal in soil, and concrete usable for this purpose |
| 10/23/1991 | EP0193605B2 Foil material for controllable leakproof separation of the areas located on both of its sides |
| 10/23/1991 | CN2087214U Machine for laying plastic sheet |
| 10/16/1991 | EP0451926A1 Method for inserting an essentially vertical screen in the ground |
| 10/16/1991 | EP0451925A1 Anchorsystem |
| 10/10/1991 | DE4010890A1 Construction of building base floor - involves application of lateral enclosure and floor support and granular rough ballast |
| 09/24/1991 | US5050320 Multi-shaft kneading auger system |
| 09/19/1991 | DE4008273A1 Sealing web for refuse dumps - has controlled unrolling and welding device for overlapping edges |
| 09/18/1991 | EP0446390A1 Welding of plastic sealing webs in trench walls |
| 09/11/1991 | CN1054463A Radial well for lowering level of ground water in foundation, and construction technology and apparatus thereof |
| 07/30/1991 | US5035535 Device for regulating the flow in a drainage siphon tube |
| 06/12/1991 | EP0431710A1 Lock monitoring system |
| 06/11/1991 | US5022792 Undergrond continuous impervious wall and method for installing same |
| 05/15/1991 | EP0426796A1 Protective housing |
| 03/13/1991 | EP0416199A1 Method for constructing a hollow space |
| 02/27/1991 | EP0414120A1 Method for making an impervious wall and machine for realizing such a method |
| 02/21/1991 | DE3926929A1 Sealed wall construction for environmental protection - has sheets of glass held by profiled coupling joint strips |
| 02/06/1991 | EP0411682A1 Procedure for making a liquid-tight wall in the ground |
| 02/06/1991 | EP0246311B1 Water barrier |
| 02/05/1991 | US4990210 Apparatus for introducing and joining diaphragms in slotted walls |
| 01/08/1991 | US4983075 Clay, sand, sodium or potassium silicate, in situ gelation where barrier contacts acidic water |
| 12/31/1990 | CA2019776A1 Procedure for making a liquid-tight wall in the ground and wall thus made |
| 12/27/1990 | WO1990014214A3 Protective housing |
| 12/20/1990 | DE3919328A1 Prevention of seepage from refuse dumps - by means of glass sheets inserted in trenches filled with sealing mass |
| 12/18/1990 | CA1277843C Method for building a protective wall when constructing an underwater base |
| 12/06/1990 | DE3917761A1 Connection device for retention wall panels - consists of several interlocking wedge profiles |
| 12/05/1990 | EP0400636A1 Device for fitment to the outlet end of a drainage siphon tube |
| 12/04/1990 | US4974379 Textural break foundation wall construction modules |
| 12/02/1990 | CA2017979A1 Outlet fitting for drain siphon pipe |
| 11/29/1990 | WO1990014214A2 Protective housing |
| 11/14/1990 | CN1010423B Process for sealing off the water flowing in tunnels, mine entries, canals and other known subsurface ducts |
| 11/08/1990 | DE3914685A1 Sealing base layer for land-fill site - made by injecting three layers of thixotropic mineral and/or synthetic organic material |
| 10/31/1990 | DE3913760A1 Method of prevention of seepage from refuse dumps - uses slit trench in which panels with overlapping joints are inserted |
| 10/30/1990 | US4966493 Process and apparatus for cleaning contaminated soil |
| 10/11/1990 | DE3910788A1 Plastic lock |
| 10/10/1990 | EP0391127A1 Device for placing a sealing-membrane in a slot in the earth filled with suspension |
| 08/30/1990 | DE3905463A1 Method and arrangement for constructing two-phase diaphragm walls |
| 08/23/1990 | DE4008207A1 Retention wall construction system - with binding agents or solids fed into trench after cutting |
| 08/22/1990 | CN1044839A Infiltration-draining method for underground structure |
| 07/24/1990 | US4943189 Method of contructing a vertical barrier wall in the ground, as well as apparatus for applying this method |
| 06/19/1990 | US4934865 Catchwater drain, excavating structure and method of construction |
| 06/05/1990 | CA1269865A1 Ground water well dimensioning procedure |
| 06/05/1990 | CA1269852A1 Process and installation for freezing soils by means of a cryogenic liquid |
| 05/29/1990 | US4929126 Method for installing a screen of flexible material in the soil |
| 05/22/1990 | US4927297 Leak prevention structure, method and apparatus |
| 05/03/1990 | WO1990004719A1 Current generation and storage with superconductors in the cold sink |
| 05/03/1990 | DE3924043A1 Superconductive current generator and store in frozen pit - utilise thermal and mechanical effects for cooling air to cryogenic temp. for low-pressure frictional distillation |
| 04/25/1990 | EP0364997A2 Bituminous core sealing for earth works, and method for producing same |
| 04/11/1990 | EP0362856A2 Process and apparatus for purifiying polluted soils |
| 03/29/1990 | DE3832810A1 Earth trench |
| 03/29/1990 | DE3832809A1 Overlapping plastic seal in earth trenches |
| 03/22/1990 | DE3831078A1 Method of placing thin-walled metal plates in a trench wall serving as diaphragm wall, and folded seam connection for this |
| 03/20/1990 | US4909674 Underground continuous impervious wall and method for installing same |
| 03/13/1990 | US4908129 Impervious layer formation process and landfill adsorption system |
| 02/13/1990 | US4900195 For use in an underground trench |
| 02/01/1990 | DE3825728A1 Method of emptying a guide for a diaphragm and arrangement for carrying out the method |
| 01/25/1990 | DE3823784A1 Method, sealing elements and apparatus for constructing a diaphragm wall |
| 12/06/1989 | EP0345143A1 Process for making an acid-resistant sealing cut in the soil, and concrete to be used therefor |
| 11/09/1989 | DE3826869C1 Method of constructing a sealing diaphragm in an earth trench and apparatus for carrying out the method |
| 11/02/1989 | EP0339181A2 Welding cartridge |
| 10/31/1989 | US4877358 Method and apparatus of constructing a novel underground impervious barrier |
| 10/31/1989 | US4877357 Method and apparatus for making a slurry trench or wall in the soil |
| 10/25/1989 | EP0338039A1 Process for sealing soil formations, in particular for creating waste disposal sites |
| 10/11/1989 | EP0336093A1 Method for lowering the ground water level and system for that purpose |
| 10/11/1989 | EP0135584B1 Environmental cut-off for deep excavations |
| 09/26/1989 | CA1260331A1 Water barrier |
| 09/05/1989 | US4863312 Underground leachate and pollutant drainage barrier system |
| 08/23/1989 | EP0329500A1 Process and apparatus for consolidating the terrain |
| 08/10/1989 | DE3802723A1 Pit well |
| 07/11/1989 | CA1257097A1 Environmental cut-off and drain |
| 07/04/1989 | US4844662 Sealing barrier for subterranean purposes |
| 06/27/1989 | CA1256295A1 Sealing screen for waste dumps |
| 06/13/1989 | US4838980 Method and apparatus for introducing and joining diaphragms in slotted walls |
| 06/13/1989 | US4838734 Method and device for forming a fluid permeation control layer of the ground |
| 06/01/1989 | DE3739107A1 Method of constructing an impermeable wall and apparatus for carrying out this method |
| 05/09/1989 | CA1253703A1 Rapid construction of ice structures with chemically treated sea water |
| 04/20/1989 | DE3733559A1 Method of constructing a trench wall and sealing strip for carrying out the method |
| 04/13/1989 | DE3733520A1 Safety dam for the drivage of underwater tunnels in compressed air |
| 04/13/1989 | DE3733388A1 Method of welding sealing strips in earth trenches |
| 04/13/1989 | DE3733163A1 Sealing of trench walls |
| 04/12/1989 | EP0310771A2 Sealant for reservoirs |
| 03/30/1989 | DE3830554A1 Cutting tool for finishing injected trench walls |
| 03/22/1989 | CN1031875A Construction method and apparatus for bank revetment engineering with coarse-cloth layer |
| 03/09/1989 | DE3727819A1 Method of sealing soil formations, in particular for constructing landfill sites |
| 03/09/1989 | DE3727752A1 Method of constructing a retaining wall |
| 03/02/1989 | DE3727978A1 Method of sealing soil formations, in particular for constructing landfill sites |
| 03/02/1989 | DE3727202A1 Method of constructing sealing trench walls |
| 02/28/1989 | US4808039 Coupling mechanism for interconnecting sealing plates that are to be built into a sealing wall |
| 02/23/1989 | WO1989001547A1 Process for sealing soil formations, in particular for creating waste disposal sites |
| 01/11/1989 | EP0298283A1 Sealing construction comprising a vertical trench wall and a sealing apron inserted therein |
| 12/22/1988 | DE3717885A1 Method and apparatus for producing a sealing course of mineral sealing materials |
| 12/22/1988 | DE3717884A1 Arrangement for retaining the pollutants from pollutant-containing landfill leachate waters |
| 12/14/1988 | EP0294539A2 Process and apparatus for welding sealing aprons |
| 12/13/1988 | US4790688 Creating fracture below waste site; filling with gellable polymeric solution; impermable barriers |
| 12/13/1988 | US4790387 Wellpoint assembly and method of installing a wellpoint assembly |
| 12/08/1988 | DE3717999A1 Method of welding sealing strips in trench walls |
| 11/30/1988 | EP0292941A2 Arrangement for retaining contaminants from contaminated landfill leachates with an inorganic sealing layer and method of manufacturing said layer |