| Patents for E02D 1 - Investigation of foundation soil in situ (1,969) |
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| 06/20/1989 | CA1255920A1 Method of and apparatus for measuring pile skin friction |
| 05/24/1989 | CN2038117U Micro electronic injecting instrument |
| 05/03/1989 | CN2036966U Detection car with loading plate for soil strength |
| 04/12/1989 | CN1032398A Car for testing strength of soil with loading plate |
| 03/29/1989 | CN2034977U New-type soil tamper |
| 03/16/1989 | DE3728669A1 Measuring probe for measuring the soil compaction |
| 03/01/1989 | EP0305178A1 Improvements in or relating to soil sampling |
| 03/01/1989 | EP0304434A1 Process and device for establishing the cohesion curve of an ocean floor at great depth |
| 02/21/1989 | US4806153 Method and apparatus for investigating subsurface conditions |
| 01/26/1989 | DE3722653A1 Method of constructing a ground-water measuring point and device for carrying out the method |
| 11/30/1988 | EP0292828A2 Method and device for generating defined ground thrust stresses |
| 11/15/1988 | CA1244755A1 Borehole dilatometer with intensifier |
| 11/09/1988 | EP0289520A1 Remote underwater excavator and sampler. |
| 11/09/1988 | CN87103101A Double rank adjustable water tanks and fast-installed piezometric process |
| 10/27/1988 | DE3712455A1 Compaction testing apparatus |
| 10/26/1988 | CN87102685A Directional earth-filling method and apparatus for the deep-hole installation of a sensor |
| 10/06/1988 | DE3709719A1 Method of taking soil, air or water samples from the earth |
| 09/27/1988 | US4773259 Modified borehole shear tester |
| 09/14/1988 | CN87208042U Grating detecting digital display taper appliance |
| 09/13/1988 | US4770256 For consolidating lining of walls of a bore hole to prevent a cave-in |
| 09/13/1988 | US4770030 Soil penetration and sampling system |
| 09/07/1988 | WO1988006739A1 Process and device for establishing the cohesion curve of an ocean floor at great depth |
| 08/17/1988 | EP0278557A1 A method and apparatus for cellularly isolating, treating and/or removing strongly polluted material present in or on the soil |
| 08/10/1988 | CN87215463U Foundation probe |
| 08/02/1988 | US4760741 Borehole dilatometer with intensifier |
| 07/26/1988 | US4759227 Lysimeter |
| 06/01/1988 | CN85105332B Multipurpose test instrument for soil strength |
| 04/26/1988 | US4739652 Method of, and tubing and support apparatus for, arranging a tubing assembly for measuring purposes |
| 03/29/1988 | US4733568 Borehole dilatometer intensifier |
| 03/09/1988 | CN86102973A Reversely-fitted circlip type self-controlling on and off long cylinder engineering geological soft soil-grit sampler |
| 02/23/1988 | US4726239 Soil analyzer and penetrator |
| 02/23/1988 | CA1233043A1 Device for testing the load-bearing capacity of concrete-filled earthen shafts |
| 02/16/1988 | CA1232777A1 Perforated end plug plate for testing core samples |
| 02/09/1988 | CA1232535A1 Borehole dilatometer intensifier |
| 02/02/1988 | CA1232155A1 Method and apparatus for testing soil |
| 01/06/1988 | CN87203176U Device for measuring volume variation |
| 12/29/1987 | CA1230756A1 Apparatus for measuring the degree of compaction of a material |
| 12/23/1987 | EP0250279A2 Method and apparatus for measuring the permeability of a land area |
| 12/03/1987 | DE3618387A1 Process and device for removing special waste from soil, landfill sites and similar deposition sites |
| 11/25/1987 | CN87203178U Three-axle pressure chamber |
| 10/21/1987 | EP0241750A2 Combination soil auger and soil core sampler with sample retaining capacity |
| 10/15/1987 | DE3612409A1 Apparatus for taking soil samples for agriculture |
| 09/08/1987 | US4692287 Process for making a molded porous fluoroplastic resin material |
| 08/19/1987 | EP0232248A1 Borehole stress-meter and method and apparatus for the installation thereof |
| 08/13/1987 | WO1987004743A1 Remote underwater excavator and sampler |
| 08/12/1987 | EP0231571A2 Apparatus for testing rock characteristics |
| 05/19/1987 | CA1222053A1 Method and device for obtaining the peak value of a signal and application to a method and a device to determine soil hardness |
| 03/31/1987 | US4653336 Combination soil auger and soil core sampler with sample retaining capacity |
| 03/24/1987 | US4651834 Melting, heaters |
| 03/18/1987 | EP0214706A2 Borehole dilatometer intensifier |
| 03/17/1987 | US4649741 Insitu soil shear measurement apparatus |
| 02/03/1987 | US4640118 Method of and apparatus for measuring pile skin friction |
| 12/24/1986 | CN85104778A Soil-fetching device for measuring soil unit weight |
| 11/20/1986 | WO1986006830A1 Borehole stress-meter and method and apparatus for the installation thereof |
| 10/29/1986 | CN85105332A Multipurpose test instrument for soil strength |
| 09/30/1986 | US4614110 Device for testing the load-bearing capacity of concrete-filled earthen shafts |
| 08/26/1986 | CA1210319A1 Geotechnical cone lubrication apparatus and method |
| 07/30/1986 | EP0188798A2 Method for the assembling of a tubing for measuring purposes |
| 07/08/1986 | US4598591 Apparatus for determining the variations in volume of an expandable deformable cell embedded in soil and subjected to internal pressure gradients |
| 06/24/1986 | US4596151 Biaxial pressure sensor |
| 06/17/1986 | US4594899 Method and apparatus for testing soil |
| 06/17/1986 | US4594885 Projectile-propelling apparatus |
| 05/27/1986 | US4590802 Measuring apparatus for measuring the degree of compaction of a material |
| 05/07/1986 | CN85202405U Geotome for measuring the unit weight of soil body |
| 04/22/1986 | CA1203401A1 Method and apparatus for investigating the structure and porosity of earth and stony regions |
| 04/15/1986 | US4581922 Method of and device for obtaining the peak value of a signal and application to a method of and device for determining the hardness of a soil |
| 02/25/1986 | US4572304 Portable seabed penetration system |
| 02/04/1986 | CA1200118A1 Soil investigation device |
| 12/31/1985 | US4561289 Perforated end plug plate for testing core samples |
| 12/10/1985 | US4557147 Bore hole rock shear tester and method for using same |
| 11/26/1985 | US4554819 Method of and apparatus for measuring in situ, the subsurface bearing strength, the skin friction, and other subsurface characteristics of the soil |
| 11/21/1985 | EP0161510A1 Measurement device |
| 10/01/1985 | US4543820 Tapered blade in situ soil testing device |
| 09/11/1985 | EP0154261A2 Method and apparatus for testing soil |
| 08/27/1985 | US4537062 Method and apparatus for investigating the structure and porosity of earth and stony regions |
| 08/13/1985 | US4534143 System for controlling the moisture in the subsurface soil surrounding a building |
| 08/07/1985 | EP0150757A2 Device for determining state of strain |
| 07/23/1985 | US4530236 Soil investigation device |
| 06/26/1985 | EP0146324A2 Method and apparatus for measuring in situ earthen stresses and properties using a borehole probe |
| 06/25/1985 | US4524626 Soil effective stress sensor and method of using same |
| 06/19/1985 | EP0145241A2 Improvements in or relating to apparatus and methods for driving projectiles |
| 06/04/1985 | US4520657 Apparatus for determining the pressure of capillary water, especially in soil |
| 04/16/1985 | US4510799 Method of measuring material properties of rock in the wall of a borehole |
| 02/19/1985 | US4499954 Geotechnical cone lubrication apparatus and method |
| 01/01/1985 | US4491022 Cone-shaped coring for determining the in situ state of stress in rock masses |
| 12/11/1984 | US4487271 For sampling dense mineral specimens |
| 11/21/1984 | EP0126010A1 Devices for determining the variations of the size of a deformable and inflatable cell thrusted into the ground and subjected to gradients of internal pressure |
| 11/06/1984 | US4480481 Means and method for soil testing |
| 10/16/1984 | CA1176077A1 Device for taking ground water samples in soil and rock |
| 08/28/1984 | US4467652 Procedure and device for compaction measurement |
| 07/24/1984 | US4461171 Method and apparatus for determining the in situ deformability of rock masses |
| 07/10/1984 | US4458525 For determining soil compressibility |
| 07/03/1984 | US4458245 Method and apparatus for exploring earth and rocky formations |
| 05/16/1984 | EP0108157A1 Sampling device for taking undisturbed soil samples |
| 04/25/1984 | EP0105967A1 Method and apparatus for the investigation of the structure and permeability of soil and rock formations |
| 04/11/1984 | EP0065544B1 Procedure and device for measurement of degree of compaction |
| 03/27/1984 | US4438654 Device for taking ground water samples in soil and rock |
| 03/14/1984 | EP0102672A1 Transmission system for soil examination |
| 12/21/1983 | EP0096431A2 Apparatus for obtaining soil samples in the neighbourhood of railroad tracks with the aim to explore the mechanical properties of the soil |
| 10/25/1983 | US4411160 Vane modulus soil tester |