| Patents for G01C 13 - Surveying specially adapted to open water, e.g. sea, lake, river or canal (1,002) |
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| 02/13/2002 | CN1335487A Modular marine observation network system |
| 02/05/2002 | US6345179 Combined marine entertainment system and depth sounder |
| 01/23/2002 | CN1332359A Water rule plate |
| 01/08/2002 | US6338023 Autonomous survey system (auto survey) |
| 01/03/2002 | WO2002001258A1 Method and system for detecting water level variations |
| 01/03/2002 | WO2002001257A1 Method for measuring water level |
| 12/25/2001 | US6332360 Apparatus for measuring the depth, water velocity or water temperature of an open channel |
| 12/06/2001 | DE10025547C1 Automatic deep-sea probe provides vertical measuring profile of sea water parameters by movement between measuring points at different depths |
| 08/28/2001 | US6282151 System and method for measuring wave directional spectrum and wave height |
| 08/08/2001 | CN2441735Y Sea measuring instrument with viewing window |
| 08/08/2001 | CN1069279C Mooring bed assesment apparatus and method |
| 08/02/2001 | DE10048174A1 Datenprozessor und Datenverarbeitungsverfahren für einen Wellenmesser Data processor and data processing method for a shaft diameter |
| 08/02/2001 | DE10048173A1 Data processor for wavemeter used in optical communication fields, reads out digital interference signal data from designated address in memory, after completion of data write-in |
| 07/26/2001 | WO2001053148A1 Device for sensing, processing and displaying physical parameters, in particular navigation parameters |
| 07/03/2001 | US6256585 Method for measuring depths of a waterway and for determining vertical positions of a waterborne vessel |
| 06/27/2001 | EP1110101A2 System and method for measuring wave directional spectrum and wave height |
| 06/27/2001 | CN2436913Y Wave height inclined integrated sensor |
| 06/21/2001 | DE10048175A1 Data processor for wavemeter, adjusts sampling start timing of interference signal in A/D sampler, arbitrarily |
| 06/14/2001 | WO2001042818A1 A method for monitoring seafloor subsidence and for gravity monitoring an underground hydrocarbon reservoir |
| 05/30/2001 | CN2432548Y Pressure type wave and sea level measuring storage device |
| 04/19/2001 | WO2001027856A1 Vertical reference for waterway navigation channels |
| 04/19/2001 | CA2387494A1 Vertical reference for waterway navigation channels |
| 04/12/2001 | WO2001025725A1 Method and apparatus for alerting submersible vessels to hazardous conditions |
| 04/12/2001 | WO2001025724A1 Method and apparatus for alerting surface vessels to hazardous conditions |
| 04/05/2001 | DE19942472A1 Cartographic ally controlled water channel dredging method detects position of dredger during dredging operation for updating vector map of dredged water channel |
| 04/04/2001 | CN2426135Y Marine environment surveying instrument |
| 03/21/2001 | CN1288147A Microwave tide level sensor and use thereof |
| 01/03/2001 | EP0820400B1 Mooring bed assessment apparatus and method |
| 11/08/2000 | CN2405186Y Explosion-proof type device for sensing linear displacement caused by magnetostriction |
| 10/26/2000 | WO2000020893A3 System and method for measuring wave directional spectrum and wave height |
| 08/31/2000 | WO2000020893A9 System and method for measuring wave directional spectrum and wave height |
| 06/02/2000 | WO2000030929A1 Device support for probes and instruments used in under-water measuring techniques |
| 04/18/2000 | US6052334 System and method for measuring wave directional spectrum and wave height |
| 04/13/2000 | WO2000020893A2 System and method for measuring wave directional spectrum and wave height |
| 02/22/2000 | US6028823 Geodetic position estimation for underwater acoustic sensors |
| 01/25/2000 | CA2171801C A level measurement method and apparatus using measurements of water column pressure therefor |
| 01/05/2000 | EP0809787B1 Depth sensing expendable oceanographic probe with no extra data channel |
| 11/23/1999 | US5990809 Underwater surveying system |
| 11/18/1999 | DE19855000C1 Carrier for water measuring probes and instruments, e.g. for profile detection of sea or freshwater parameters |
| 10/26/1999 | US5970901 Mooring bed assessment apparatus and method |
| 10/07/1999 | WO1999050675A1 Method and device for chronologically measuring ocean current velocity vertical profiles |
| 06/30/1999 | EP0756695B1 Water depth gauge |
| 06/15/1999 | US5913179 Computer implemented method |
| 05/12/1999 | CN2318607Y Three-axis dotted-line projecting display device |
| 04/29/1999 | DE19747234A1 Map reading device for ship or airplane |
| 12/16/1998 | EP0689109B1 Electronic appliance equipped with function of measurung water depth |
| 11/10/1998 | US5834641 Depth gauge |
| 10/06/1998 | US5816874 Remote underwater sensing station |
| 09/15/1998 | US5808741 Method for remotely determining sea surface roughness and wind speed at a water surface |
| 08/11/1998 | US5791187 Level measurement method using measurements of water column pressure therefor |
| 08/04/1998 | US5790434 Hybrid method of Characterizing spatial aspects of the transect of a river having predetermined water surface levels |
| 05/22/1998 | WO1998021087A1 Remote underwater sensing station |
| 05/20/1998 | CN1182394A Mooring bed assessment apparatus and method |
| 05/19/1998 | US5753833 Electronic watch having a water depth measuring function |
| 04/07/1998 | US5737246 Water depth measuring device |
| 03/03/1998 | US5724317 Apparatus and a method for indicating measurements with an analog display and a pointer unit thereof |
| 01/28/1998 | EP0820400A1 Mooring bed assessment apparatus and method |
| 12/30/1997 | US5703594 Method for remotely detecting tides and the height of other surfaces |
| 12/03/1997 | EP0809787A1 Depth sensing expendable oceanographic probes |
| 09/11/1997 | DE19608422A1 Measuring device for determining excess pressure esp. under water |
| 07/01/1997 | US5644077 Wave-powered ocean profiler |
| 06/04/1997 | EP0776459A1 Observations from below a rough water surface |
| 02/05/1997 | EP0756695A1 Water depth gauge |
| 12/04/1996 | EP0745915A2 Electronic watch having a water depth measuring function |
| 11/26/1996 | US5578751 Oceanographic sensor suite wet well system |
| 10/31/1996 | WO1996033907A1 Mooring bed assessment apparatus and method |
| 10/02/1996 | CN2236644Y Probe of instrument |
| 09/10/1996 | US5555518 Depth sensing expendable oceanographic probes |
| 06/18/1996 | US5528493 Observations from below a rough water surface to determine conditions of or above the surface waves |
| 06/13/1996 | WO1996018082A1 Depth sensing expendable oceanographic probes |
| 06/13/1996 | DE4443209A1 Water depth gauge for use in fishing |
| 05/21/1996 | US5519671 Electronic equipment with depth measuring function |
| 02/29/1996 | WO1996006327A1 Observations from below a rough water surface |
| 01/02/1996 | US5479724 Method and apparatus for scour depth measurement |
| 12/27/1995 | EP0689109A1 Electronic appliance equipped with function of measurung water depth |
| 12/06/1995 | EP0685711A2 Indicating apparatus and method with pointer |
| 11/15/1995 | EP0682301A2 Water depth measuring device |
| 11/02/1995 | WO1995029382A1 Water depth gauge |
| 11/02/1995 | CA2190484A1 Water depth gauge |
| 06/14/1995 | DE4413727C1 Water depth measuring device |
| 02/14/1995 | CA1334468C Water-dilutable binders, a process for their production and their use |
| 11/08/1994 | US5363307 Measuring apparatus having an indicator for displaying tide or tidal current data |
| 10/04/1994 | US5351414 Water depth apparatus |
| 09/15/1994 | WO1994020886A1 Electronic appliance equipped with function of measurung water depth |
| 03/01/1994 | US5291458 Method of determining depth values for the surface profile of the bottom of a body of water |
| 02/01/1994 | US5283767 Autonomous oceanographic profiler |
| 09/12/1993 | CA2091430A1 Method of determining depth values for the bottom profile of a body of water |
| 09/02/1993 | WO1993017334A1 Autonomous oceanographic profiler |
| 09/02/1993 | CA2131025A1 Autonomous oceanographic profiler |
| 05/26/1993 | CN1072498A Flow direction measuring method which can be used with steel ship |
| 05/11/1993 | US5209112 Expendable oceanographic sensor apparatus |
| 04/06/1993 | US5200931 Volumetric and terrain imaging sonar |
| 03/30/1993 | US5198820 Calibrating satellite altimetry measurements of geoidal height |
| 03/30/1993 | US5198662 Water temperature distribution measurement system employing optical cable and means for determining a water depth at various points along the optical cable |
| 02/23/1993 | US5189646 Small-sized electronic device with depth gauge |
| 12/19/1992 | CA2069552A1 Volumetric and terrain imaging sonar |
| 12/08/1992 | US5170379 Process and system for measuring when dragged underwater beneath a helicopter |
| 11/17/1992 | US5165084 System and method for measuring changes in sea level |
| 01/22/1992 | EP0467765A1 Procedure and system for measuring under water on a tow line from a helicopter |
| 01/22/1992 | EP0329657B1 Device for studying and measuring sea swell |