Patents

Drilling survey

METHOD AND SYSTEM FOR WATER PERMEABILITY TEST USING TWO-CHAMBER TYPE SYRINGE PUMP
4371370
LIGHTWEIGHT BORING MACHINE
4014975

Testing using borehole

Q-VALUE MEASURING METHOD USING VERTICAL ARRAY SEISMOMETER
5517258
FIXING APPARATUS FOR INSTALLING OBSERVATION EQUIPMENT INTO BOREHOLE
5348775
EARTHQUAKE OBSERVATION WELL AND METHOD FOR INSTALLING SEISMOMETER THEREIN
5302255
METHOD FOR INSTALLING SEISMOMETER IN EARTHQUAKE OBSERVATION WELL
5302151
METHOD AND DEVICE FOR GENERATING EXPANDED IMAGE OF BOREHOLE WALL
4240369

In-situ measurement

ROCK MASS STABILITY EVALUATION SYSTEM AND METHOD BY USING NON-CONTACT VIBRATION SENSOR
5199160
DRIVEN WATER LEVEL OBSERVATION DEVICE
5044852
METHOD AND APPARATUS FOR SOIL INVESTIGATION BY MEASURING EXCESS PORE WATER PRESSURE AT THE TIME OF PERCUSSIVE PENETRATION, AND APPARATUS FOR USE THEREIN
4458465
METHOD FOR DIAGNOSING DETERIORATION OF WATERPROOF LAYER ON BUILDING ROOFTOP
4442808
MANAGEMENT AND MONITORING METHOD FOR WASTE DISPOSAL SITE
4397024
RIVER BED SCOUR MONITORING METHOD
4375676
GROUND SURFACE DISPLACEMENT MEASUREMENT METHOD USING SYNTHETIC APERTURE RADAR
3987451
METHOD AND DEVICE FOR CONCRETE INSPECTION USING ELECTROMAGNETIC WAVE
3848641

Geophysical exploration

SYSTEM SYNCHRONIZATION METHOD FOR IN-VEHICLE GROUND PENETRATING RADAR SYSTEM
5126911
DETECTION SYSTEM OF MAGNETIC FIELD SWEEPING FOR MINESWEEPER
5084472
DETERIORATION DIAGNOSIS METHOD FOR CONCRETE STRUCTURES
4936387
CROSSHOLE SEISMIC TOMOGRAPHY METHOD USING VIBRATOR SOURCE
4632312
EXPLORATION SYSTEM(Noise removal method in airborne electromagnetic survey)
4498875
SEISMIC VIBRATOR FOR SONIC LOGGING
4315316
HELICOPTER- TOWED AIRBORNE SYSTEM
4222512
SURFACE WAVE METHOD USING MULTI-CHANNEL LAND STREAMER CABLE
4093944

Soil purification

IN-SITU PURIFYING METHOD OF CONTAMINATED SOIL
4428638

Others

EROSION CONTROL INFORMATION PROCESSING SYSTEM, EROSION CONTROL INFORMATION PROCESSING METHOD, AND EROSION CONTROL PROCESSING PROGRAM
5639130
FLEXIBLE CULTURE BAG AND ANAEROBIC CULTURE TEST APPARATUS USING THE BAG
4570032