| 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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| 01/14/1999 | WO1999001722A1 Method and device for determining the filling height of a product in a tank |
| 01/14/1999 | CA2294217A1 Method and device for determining the filling height of a product in a tank |
| 01/13/1999 | EP0890782A1 Device for monitoring the storage level of a product in a container |
| 01/13/1999 | CN2304109Y Capacitor water-level sensor |
| 01/13/1999 | CN2303632Y Infusion signal alarm |
| 01/13/1999 | CN1041653C Spetrum analysis method for steel rare-earth solid solution capacity with inductive coupling plasma |
| 01/12/1999 | US5859589 Pressure alarm and method of operation for sewage treatment system |
| 01/12/1999 | US5859365 Remaining fuel amount measuring apparatus for a fuel tank |
| 01/07/1999 | WO1999000647A1 Apparatus for detecting a level of a liquid |
| 01/07/1999 | WO1999000003A2 Device for measuring the level of a liquid in a vessel |
| 01/07/1999 | EP0889305A2 Method and device for testing pressurized gas bottles |
| 01/07/1999 | DE19749786A1 Device for checking filling level in container |
| 01/07/1999 | DE19728660A1 Verfahren und Vorrichtung zum Erfassen der Füllhöhe von Füllgut in einem Behälter Method and device for detecting the filling level of filling material in a container |
| 01/07/1999 | DE19728653A1 Method to detect surface vibrations of bodies for evaluating quality |
| 01/07/1999 | DE19727171A1 Safe, manually-read level indicator for transport container |
| 01/06/1999 | CN2303280Y Magnetic triggering type water level of boiler measuring meter |
| 01/06/1999 | CN2303279Y Magnetic suspension and tracking type meter for measuring liquid level |
| 01/06/1999 | CN2303278Y Infrared photoelectric liquid level metering apparatus |
| 01/06/1999 | CN2303277Y Prob of infrared sensing liquid level sounder |
| 01/06/1999 | CN2303276Y Device for automatically indicating level of engine oil of automobiles |
| 01/06/1999 | CN1204105A Process for generating at least one warning signal relating to level in product storage tank and device for implementing the process |
| 01/06/1999 | CN1204050A Infrared water level sensor for boiler |
| 01/06/1999 | CN1204049A Device for monitoring storage level of product stored in tank |
| 01/06/1999 | CN1041565C Apparatus for detecting residual quantity of toners |
| 01/06/1999 | CN1041554C Water storage tank |
| 01/05/1999 | US5856953 Processing echoes in ultrasonic liquid gauging systems |
| 01/05/1999 | US5856783 In an underground vault |
| 01/05/1999 | US5855851 Apparatus for trasferring liquid having liquid level sensing function |
| 12/30/1998 | EP0887629A1 Method and device for detecting a filling threshold for an electrically insulating reservoir containing an electrically conductive product, for example a printing ink. |
| 12/30/1998 | EP0887628A1 Fail-safe system |
| 12/30/1998 | EP0887588A2 System for automatically refilling the boiler with water electrical appliances that employ steam |
| 12/30/1998 | EP0887553A1 Submersible pump |
| 12/30/1998 | CN2302506Y Digital display liquid-level gauge |
| 12/30/1998 | CN2302505Y Capacitive digital display oil tank oil quantity meter |
| 12/30/1998 | CN2302504Y Double-function bin level measuring apparatus |
| 12/30/1998 | CN1203359A GSM communication type automatic telemetering equipment for oil well liquid level |
| 12/30/1998 | CN1203358A Ink container with inductive ink level sense |
| 12/29/1998 | US5852946 In a flexible fluid container |
| 12/29/1998 | US5852937 Indicator cap and method of manufacture thereof |
| 12/24/1998 | DE19725672A1 Fill-level determination for fluid reservoir in vehicle |
| 12/23/1998 | EP0886129A2 A method and means for detecting the level of a liquid |
| 12/23/1998 | CN2301706Y Internal secondary heating device for magnetic float level meter |
| 12/22/1998 | US5852459 Printer using print cartridge with internal pressure regulator |
| 12/22/1998 | US5852240 Portable flow measuring device |
| 12/22/1998 | US5851083 Microwave level gauge having an adapter with a thermal barrier |
| 12/22/1998 | US5850757 Apparatus for measuring the amount of liquid in a tank mounted within a vehicle by measuring the tank pivot cell and inclinometer |
| 12/17/1998 | WO1998057392A1 Horn antenna |
| 12/17/1998 | WO1998057186A2 Dual compartment instrument housing |
| 12/17/1998 | WO1998057132A1 Capacitive liquid level indicator |
| 12/17/1998 | CA2293762A1 Horn antenna |
| 12/16/1998 | EP0884567A1 System to detect filling levels |
| 12/16/1998 | CN2300892Y Total closed magnetic ring type lubrication oil indicator |
| 12/16/1998 | CN1201960A Automatic high level alarm of solar water heater |
| 12/15/1998 | US5850175 Water level detector |
| 12/15/1998 | US5848549 Magnetostrictive position sensing probe with waveguide referenced to tip for determining fluid level in a container |
| 12/10/1998 | WO1998055840A1 Measurement of quantity of incompressible substance in a closed container |
| 12/10/1998 | DE19800770A1 Illumination device for long visual inspection fitting in boiler, container or pipeline |
| 12/10/1998 | DE19723830A1 Washing device for cleaning cylinders in printing machine |
| 12/09/1998 | EP0882974A1 Device and procedure for determining the level and the density of a liquid in a tub, by means of a single bubble plunger tube |
| 12/09/1998 | EP0882958A1 Method and device for monitoring a predetermined filling level in a container |
| 12/09/1998 | EP0882957A2 Method for material level measurement in a container according to the radar principle |
| 12/09/1998 | EP0882956A2 Method for material level measurement in a container according to the radar principle |
| 12/09/1998 | EP0882955A1 Level measuring apparatus using microwaves |
| 12/09/1998 | EP0882594A1 Ink container with an inductive ink level detection machanism attached to a collapsible ink bag |
| 12/09/1998 | EP0882214A2 Sealed observation element for sulfur recovery unit |
| 12/09/1998 | EP0882212A2 Acoustic transducer components |
| 12/09/1998 | CN2300095Y Shaft-position level sensor |
| 12/09/1998 | CN2300094Y Level sensor |
| 12/09/1998 | CN2300093Y Chip microcomputer detector for hydropower station water level |
| 12/09/1998 | CN2300092Y 红外锅炉水位传感器 Infrared boiler water level sensor |
| 12/09/1998 | CN1201143A Colour-changing display screen for boiler water-level |
| 12/08/1998 | US5847567 Microwave level gauge with remote transducer |
| 12/08/1998 | US5847276 Fluid displacement level, density and concentration measurement system |
| 12/03/1998 | WO1998054552A1 An infrared ray color-changing water level gage |
| 12/03/1998 | WO1998054549A1 Midloop ultrasonic instrument |
| 12/02/1998 | EP0881475A1 Device for determining a quantity of consumable product present in a reservoir and corresponding device for printing documents |
| 12/02/1998 | EP0881080A1 Ink amount detecting device and recording apparatus provided with such a device |
| 12/02/1998 | EP0842504A4 Window-closing safety system |
| 12/02/1998 | EP0784784B1 Liquid level sensor for ink jet printers |
| 12/02/1998 | CN2299307Y throwing static pressure liquid level transmitter |
| 12/02/1998 | CN2299306Y Non-fade zone mica two-colour water gage |
| 12/01/1998 | US5845000 Optical identification and monitoring system using pattern recognition for use with vehicles |
| 12/01/1998 | US5844577 Back pressure regulator ink-jet pen |
| 12/01/1998 | US5844491 Apparatus for establishing and/or monitoring a predetermined filling level in a container |
| 12/01/1998 | US5843378 Method of producing a probe for aspirating and dispensing probe having surface sensing capability |
| 12/01/1998 | US5842374 Measuring method of a wide range level and an apparatus thereof |
| 12/01/1998 | US5842347 Method and apparatus for monitoring the level of liquid nitrogen in a cryogenic storage tank |
| 11/26/1998 | WO1998053282A1 Vibration filling level limit switch and method for determining and/or monitoring the filling level of a medium in a container |
| 11/26/1998 | WO1998053281A1 Device for measuring liquid level in a tank |
| 11/26/1998 | WO1998053280A1 Liquid level sensor using refrigerant subcooling |
| 11/26/1998 | DE19722856A1 Waste water treatment high frequency sound process |
| 11/25/1998 | CN2298505Y Level indicating device |
| 11/25/1998 | CN1200169A Device for sensing and controlling ice level |
| 11/24/1998 | US5841666 Processor apparatus and method for a process measurement signal |
| 11/24/1998 | US5841028 Automated liquid-level vessel apparatus |
| 11/19/1998 | WO1998052014A1 Liquid level sensor for use in a hot, pressurized liquid |
| 11/19/1998 | WO1998052004A1 System and method for measuring the liquid level capacity in a container |
| 11/19/1998 | DE19720519A1 Vorrichtung zur Feststellung und/oder Überwachung eines Füllstandes eines Mediums in einem Behälter A device for determining and / or monitoring a fill level of a medium in a container |
| 11/19/1998 | DE19720125A1 Level gauge for liquids in vehicle or aircraft tanks |
| 11/18/1998 | EP0810946B1 Device for pressurising a unified two-liquid propulsion subsystem for geostationary satellites |