| Patents for G01F 23 - Indicating or measuring liquid level, or level of fluent solid material, e.g. indicating in terms of volume, indicating by means of an alarm (31,056) | 
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| 06/19/2003 | WO2003050479A1 Electronic field device with a sensor unit for process measurement  | 
| 06/19/2003 | WO2003050471A1 Apparatus and method for the measurement of electrical properties of materials through non-magnetizable materials  | 
| 06/19/2003 | US20030110963 Ink and dampening solution determination in offset printing  | 
| 06/19/2003 | US20030110856 Bubble water depth measuring method and system thereof  | 
| 06/19/2003 | US20030110855 Method and device for determining the filling level for the ascertainment of the simmering process of mineral oil products  | 
| 06/19/2003 | US20030110846 Device and method for measuring the injection quantity of injection nozzles, especially for motor vehicles  | 
| 06/19/2003 | CA2469920A1 Method for the acoustic control of bottle fill levels  | 
| 06/18/2003 | EP1319177A2 Device and method for the optical inspection, assessment, and control of colored plastic articles and/or container contents  | 
| 06/18/2003 | EP1319168A1 Sensor device  | 
| 06/18/2003 | EP1318966A2 Method and device for determining quantities of fluid  | 
| 06/18/2003 | EP0940658A4 Ultrasound sensor for detecting the level of liquids  | 
| 06/18/2003 | DE20302582U1 Ultrasonic fluid level monitor for pharmaceutical processes has membrane flush with housing  | 
| 06/18/2003 | CN2556611Y Steel wire disc type high precision level meter  | 
| 06/18/2003 | CN2556610Y Barrier potential admittance bin level meter  | 
| 06/18/2003 | CN1424577A Biosensor with sample type and volume test and method thereof  | 
| 06/18/2003 | CN1424561A Low temperature level meter  | 
| 06/17/2003 | US6578418 Sight glass  | 
| 06/17/2003 | US6578417 Filling level sensor  | 
| 06/17/2003 | US6578416 Fuel system  | 
| 06/17/2003 | US6578415 Limit-level sensor and method of determining the undershooting or overshooting of an intended level of liquid in a container  | 
| 06/17/2003 | CA2251052C Fuzzy logic liquid level control  | 
| 06/12/2003 | WO2003048698A1 A method and apparatus for measuring a fluid level and a motor vehicle provided with such apparatus  | 
| 06/12/2003 | WO2003048697A1 Radar antenna  | 
| 06/12/2003 | WO2003048696A1 Level gauge  | 
| 06/12/2003 | WO2003048695A1 Centering device for a rod-type or wire-type probe  | 
| 06/12/2003 | US20030109798 Biosensor apparatus and method with sample type and volume detection  | 
| 06/12/2003 | US20030107738 Photometric calibration of liquid volumes  | 
| 06/12/2003 | US20030106371 Gear assembly including magnetic cap with alignment feature  | 
| 06/12/2003 | US20030106370 Measuring apparatus  | 
| 06/11/2003 | EP1317660A1 Catalyst feeding system  | 
| 06/11/2003 | EP1317659A1 Filling level measuring device  | 
| 06/11/2003 | CN1423582A Device for determining and/or monitoring a predetermined level  | 
| 06/11/2003 | CN1111273C Automatic supersonic oil tank level measurement method based on half-wave transmission principle  | 
| 06/10/2003 | US6577960 Liquid gauging apparatus using a time delay neural network  | 
| 06/10/2003 | US6577959 Fluid level measuring system for machines  | 
| 06/10/2003 | US6577118 System and method for measuring liquid metal levels or the like  | 
| 06/10/2003 | US6575028 Auto-cleaning oil-gauge for axle-ends of vehicles  | 
| 06/10/2003 | US6575010 Method and system for detecting and cross-checking faulty sensors in liquid level indicators and controllers  | 
| 06/10/2003 | CA2316497C Device for determining the filling level of a filling material in a container  | 
| 06/10/2003 | CA2313443C Method and apparatus for the highly accurate determination of the filling level of a product in a container  | 
| 06/05/2003 | WO2003046546A1 Detection systems and methods  | 
| 06/05/2003 | WO2003046500A1 Fiberoptic water sensor  | 
| 06/05/2003 | WO2003046491A1 Antenna system for a level measuring device  | 
| 06/05/2003 | WO2003046490A1 Method for a capacitive level measurement  | 
| 06/05/2003 | WO2003021198A3 Digital conversion adapter for magnetically coupled level meters  | 
| 06/05/2003 | US20030101819 Acoustic assessment of fluids in a plurality of reservoirs  | 
| 06/05/2003 | US20030101811 Apparatus for liquid level measurement in a container  | 
| 06/05/2003 | CA2468317A1 Detection systems and methods  | 
| 06/04/2003 | EP1316782A1 A method and apparatus for measuring a fluid level and a motor vehicle provided with such apparatus  | 
| 06/04/2003 | CN2554614Y Water level measuring apparatus of massage bathtube  | 
| 06/04/2003 | CN2554613Y Vehicle Fuel-iol digital display metering instrument  | 
| 06/04/2003 | CN2554612Y Gas-holder height display board  | 
| 06/04/2003 | CN2554611Y Fluid level indicator  | 
| 06/04/2003 | CN2554610Y Water temp., water level display  | 
| 06/04/2003 | CN1422385A Method of detecting a material interface using a microwave level transmitter  | 
| 06/04/2003 | CN1110689C Level sensor  | 
| 06/03/2003 | US6573829 Oil proper amount informing apparatus for engine  | 
| 06/03/2003 | US6573732 Dynamic range sensor and method of detecting near field echo signals  | 
| 06/03/2003 | US6572255 Apparatus for controllably mixing and delivering diluted solution  | 
| 06/03/2003 | US6571644 Method and device for determining the filling level for the ascertainment of the simmering process of mineral oil products  | 
| 06/03/2003 | US6571627 Slide detector  | 
| 06/03/2003 | US6571626 Fuel level sensor  | 
| 06/03/2003 | US6571625 Fluid level sensor  | 
| 06/03/2003 | US6571624 Low gravity liquid level sensor rake  | 
| 05/30/2003 | WO2003044470A1 Device for level detecting  | 
| 05/30/2003 | WO2002037007A9 Liquid level controller  | 
| 05/29/2003 | US20030099426 Communication system with a signal conduction matrix and surface signal router  | 
| 05/29/2003 | CA2412405A1 Liquid level gauge and specific gravity calibration therefor  | 
| 05/28/2003 | EP1315179A1 Level indicator for oil filled transformers, choke coils or tap changers  | 
| 05/28/2003 | EP1314968A1 System for indicating the level of fuel in a fuel tank  | 
| 05/28/2003 | EP1314967A1 Electronic multi-purpose material level sensor  | 
| 05/28/2003 | EP1314006A2 Device for determining and/or monitoring the density and/or the level of a filling material in a container  | 
| 05/28/2003 | EP1314005A2 Method for measuring the level of a medium in a reactor  | 
| 05/28/2003 | CN2553349Y Hot water yield display device for electric water heater  | 
| 05/28/2003 | CN2553348Y Self-descaling electrode type water level testing sensor  | 
| 05/27/2003 | US6570380 Non-linear hall IC  | 
| 05/27/2003 | US6568587 Collapsible measuring container  | 
| 05/27/2003 | US6568264 Wireless swimming pool water level system  | 
| 05/27/2003 | US6568263 Liquid level detector and system  | 
| 05/27/2003 | US6568262 Device for detecting fuel input in a motor vehicle tank  | 
| 05/22/2003 | WO2003042640A1 Liquid level sensor  | 
| 05/22/2003 | WO2003042639A1 Slot antenna  | 
| 05/22/2003 | US20030095675 Light communication channel-based voice-activated control system and method for implementing thereof  | 
| 05/22/2003 | US20030094044 level gauge for oil-filled transformers, chokes and tap changers  | 
| 05/22/2003 | US20030094043 Device for sensing the level of liquid, particularly for submersed pumps  | 
| 05/22/2003 | US20030094042 Temperature-sensing device for determining the level of a fluid  | 
| 05/21/2003 | EP1313056A1 System for detecting and recording discharges of waste hydrocarbons of a ship  | 
| 05/21/2003 | EP1312898A2 Contact free sensor system  | 
| 05/21/2003 | EP1312897A2 Capacitive liquid level sensor for submersed pumps  | 
| 05/21/2003 | EP1311822A2 Method and apparatus for determining the composition of fluids  | 
| 05/21/2003 | EP1311807A1 Device for determining the level of a filler material in a container  | 
| 05/21/2003 | EP0799407B1 Electronic multi-purpose material level sensor  | 
| 05/21/2003 | CN2551980Y Explosion-proof level meter  | 
| 05/21/2003 | CN2551979Y Explosion-proof in situ digital display level meter  | 
| 05/21/2003 | CN1109235C Pneumatic liquid level indicator  | 
| 05/20/2003 | US6564658 Electromagnetic method of liquid level monitoring  | 
| 05/20/2003 | US6564632 Liquid level gauge with removable hall device  | 
| 05/20/2003 | US6564631 Digital signal fuel sensor  | 
| 05/20/2003 | US6564630 Method for measuring level and level sensor  | 
| 05/20/2003 | CA2266093C Fiber optic pressure sensitive optical switch and apparatus incorporating same  |