| Patents for G01C 13 - Surveying specially adapted to open water, e.g. sea, lake, river or canal (1,002) |
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| 10/26/2005 | CN1687705A System for observing wave in waterway |
| 10/05/2005 | CN2731405Y Sealing device for soft thin cord of ocean prospecting appts. |
| 09/28/2005 | EP1580525A1 Method of detection of the beginning of a diving for diving computer |
| 09/28/2005 | CN1673681A Method of detection of the beginning of a diving for diving computer |
| 09/28/2005 | CN1673680A Quick distributing apparatus for underwater sensor chain |
| 09/22/2005 | US20050205092 Process of detection of a dive start in a dive computer |
| 09/07/2005 | CN1218161C Wave height measuring method |
| 08/24/2005 | CN1657948A Acceleration transducer |
| 08/17/2005 | CN2718517Y Sea level buoy detector based on satellite positioning system |
| 06/28/2005 | CA2329884C Sonic water level measuring method and system therefor |
| 06/23/2005 | WO2005057143A1 Draft (depth) measuring instrument |
| 06/16/2005 | US20050128369 Apparatus and method for the measurement of water depth using a controlled receiver |
| 06/14/2005 | US6904864 Controlled lifeboat deployer |
| 06/14/2005 | US6904798 Multi-functional marine sensing instrument |
| 05/19/2005 | WO2005045847A1 Phase change memory element with improved cyclability |
| 03/16/2005 | CN1193210C Method and system for sound wave water level measurement |
| 03/02/2005 | CN1587910A Manless machine carried light small multiple spectrum imaging instrument for monitoring |
| 02/02/2005 | CN2676152Y Sea going seaworthy water depth fixedpoint measuring apparatus |
| 01/25/2005 | US6847326 GPS device for measuring wave height and current direction and speed and GPS system for measuring wave height and current direction and speed |
| 01/19/2005 | CN1566992A Hall digital orientation sensor |
| 12/22/2004 | CN1556370A Wave height measuring method |
| 12/21/2004 | US6833851 GPS Receiver and depth sounder unit having an adjustable display screen |
| 12/09/2004 | CA2526945A1 Method for the automatic adjustment of ground profiles in waters |
| 11/24/2004 | CN1548923A Long-distance real-time monitoring method for inshore wave |
| 11/18/2004 | WO2004099820A1 Method, system and storage medium concerning measurement of object structure |
| 11/18/2004 | DE10315830A1 Device and method e.g. for measuring of tide levels using sound waves, infrared, or laser beams to measure the tidal levels of the sea, and a measuring instrument is constructed over the water level |
| 11/17/2004 | CN1176353C Measuring method and device for sea wave load |
| 11/04/2004 | US20040220737 Method for determining the relative elevation of points in a near-shore area and measuring device for establishing a stable instantaneous water level |
| 11/02/2004 | US6813564 Method for monitoring seafloor subsidence and for gravity monitoring an underground hydrocarbon reservoir |
| 10/26/2004 | US6807856 Variable buoyancy profiling device |
| 10/12/2004 | US6802219 Tide staff system |
| 09/23/2004 | US20040184350 System and method for measuring wave directional spectrum and wave height |
| 09/10/2004 | WO2004076972A1 Water level measuring system |
| 09/02/2004 | US20040169943 Apparatus for measurement water depth including a piezoelectric scanning assembly |
| 08/25/2004 | CN2636249Y Hydrologic cableway for automatically winding, loosing and drawing offset cable |
| 06/15/2004 | US6750815 Method, apparatus, and computer program products for alerting surface vessels to hazardous conditions |
| 06/10/2004 | WO2004015428A3 Combined speed and depth transducer for marine applications |
| 06/03/2004 | WO2004046647A1 A tide staff system |
| 06/02/2004 | CN1152234C Modular system of marine observation network |
| 05/20/2004 | US20040093940 Tide staff system |
| 05/19/2004 | DE10250410A1 Liquid storage tank, e.g. for measuring liquid content in oil tank, has infrared, ultrasonic or laser device in tank directly above liquid and linked to computer on tank or remote |
| 04/22/2004 | US20040074296 Apparatus and method for oscillating a transmitted laser beam of light within the field of view (fov) of a light receiving system |
| 04/22/2004 | US20040074294 Marine instrument |
| 03/11/2004 | DE10232626B3 Bodenwasser-Strömungsmesser Ground water flow meter |
| 03/02/2004 | US6700834 System and method for measuring wave directional spectrum and wave height |
| 02/25/2004 | CN1139784C Remote measuring system for marine red tide and lake blue-green algae |
| 02/19/2004 | WO2004015428A2 Combined speed and depth transducer for marine applications |
| 02/11/2004 | CN1138129C Microwave tide level sensor and use thereof |
| 01/29/2004 | WO2004010149A1 Current meter for subsurface water |
| 12/24/2003 | CN2594763Y Three directional gas meter without interfere with each other |
| 12/10/2003 | CN2591577Y Automatic correcting temperature and salinity sensor |
| 12/04/2003 | US20030221605 Controlled lifeboat deployer |
| 11/27/2003 | WO2003098159A1 Wave measuring buoy and method of calibrating same |
| 11/26/2003 | CN1458506A Measuring method ad device for sea wave load |
| 11/18/2003 | US6650884 Combined marine entertainment system and depth sounder |
| 11/12/2003 | CN1455225A Side-scanning sonar data acquistion processing system and method thereof |
| 10/29/2003 | EP0776459B1 Observations from below a rough water surface |
| 10/09/2003 | US20030189513 GPS device for Measuring wave height and current direction and speed and GPS system for measuring wave height and current direction and speed |
| 10/07/2003 | US6631097 Sonic water level measuring method and system there for |
| 09/16/2003 | CA2312170C Method and apparatus for measuring displacement of object using gps |
| 08/27/2003 | CN1438386A River-level prediction device |
| 08/20/2003 | CN1118683C Instantaneous job system and method for measuring water depth |
| 08/07/2003 | WO2003065069A1 An apparatus and method for the measurement of water depth using a controlled receiver |
| 08/07/2003 | WO2003065068A1 Apparatus for measurement water depth including a piezoelectric scanning assembly |
| 08/07/2003 | WO2003064970A1 An apparatus and method for oscillating a transmitted laser beam of light within the field of view (fov) of a light receiving system |
| 08/06/2003 | CN2564989Y Parallel electric measurement type horizontal displacement measurer |
| 07/15/2003 | US6594019 Data processor and data processing method for wavemeter |
| 07/15/2003 | US6593727 Data processor and data processing method for wavemeter |
| 07/01/2003 | US6586748 Non-invasive water current measurement system and method |
| 06/19/2003 | US20030112171 Method, apparatus, and computer program products for alerting surface vessels to hazardous conditions |
| 05/15/2003 | US20030093222 Method for monitoring seafloor subsidence and for gravity monitoring an underground hydrocarbon reservoir |
| 05/06/2003 | US6558216 Land and water based flash flood detection and warning system |
| 04/22/2003 | US6552336 Non-invasive, opto-acoustic water current measurement system and method |
| 04/10/2003 | US20030068936 Land and water based flash flood detection and warning system |
| 04/08/2003 | US6545286 Method and apparatus for water level determination |
| 03/25/2003 | US6536277 Level-tracing water-monitoring apparatus |
| 02/05/2003 | EP1247237A4 Vertical reference for waterway navigation channels |
| 01/30/2003 | WO2003008907A1 Method for determining the relative elevation of points in a near-shore area and measuring device for establishing a stable instantaneous water level |
| 01/29/2003 | EP1279970A2 A system for monitoring a feature of a surface with broad swath and high resolution |
| 01/29/2003 | CN2533450Y Intelligent observing device for ocean station |
| 12/04/2002 | EP1262792A1 System for monitoring a feature of a surface by reflected satellite navigation signals |
| 10/22/2002 | US6469664 Method, apparatus, and computer program products for alerting surface vessels to hazardous conditions |
| 10/09/2002 | EP1247237A1 Vertical reference for waterway navigation channels |
| 09/17/2002 | US6453256 System and method for automatically processing and calibrating data from a current measuring device |
| 09/12/2002 | DE10111347A1 Float joined by cord to plumb bob, permitting anglers to measure depth of open waters, has plate-like bob with central coupling |
| 09/05/2002 | US20020124024 Image management system and methods using digital watermarks |
| 09/05/2002 | US20020122564 Using embedded identifiers with images |
| 08/21/2002 | CN1364999A Remote measurement system for marine red tide and lake blue-green algae |
| 08/13/2002 | US6434509 Method and apparatus for measuring displacement of object using GPS |
| 07/03/2002 | EP1218696A1 Method and apparatus for alerting submersible vessels to hazardous conditions |
| 07/03/2002 | EP1218695A1 Method and apparatus for alerting surface vessels to hazardous conditions |
| 05/30/2002 | WO2002042792A1 System and method for measuring water depth |
| 05/30/2002 | US20020064090 Sonic water level measuring method and system there for |
| 05/07/2002 | US6382022 Shipboard wave measurement system |
| 05/02/2002 | DE10108218A1 Sonic water level measurement method in reservoir, involves calculating distance from microphones to water surface, based on time taken by sonic pulse to transit between respective intervals |
| 04/24/2002 | CN1346049A Method and system for sound wave water level measurment |
| 04/23/2002 | US6376831 Neural network system for estimating conditions on submerged surfaces of seawater vessels |
| 03/26/2002 | US6360599 Device for measuring liquid level preferably measuring tide level in sea |
| 03/06/2002 | CN1338611A Instantaneous job system and method for measuring water depth |
| 02/14/2002 | US20020018400 System and method for measuring wave directional spectrum and wave height |