| 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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| 03/24/1999 | EP0903563A1 Device for the detection and/or monitoring of a predetermined level in a container |
| 03/24/1999 | EP0902884A1 Automated liquid-level vessel apparatus |
| 03/24/1999 | EP0902742A1 Apparatus for providing ink to an ink-jet print head and for compensating for entrapped air |
| 03/24/1999 | CN2311761Y Oil level monitor |
| 03/24/1999 | CN2311760Y Two-way non-washing high articulation boiler water level meter |
| 03/23/1999 | US5886559 Signal generating apparatus and method |
| 03/23/1999 | US5886312 Switch level control for tank ullage determining system |
| 03/23/1999 | CA2040391C Oil level control system |
| 03/18/1999 | WO1999013299A2 Liquid level sensor |
| 03/18/1999 | WO1999013148A1 Dry cleaning system using carbon dioxide |
| 03/18/1999 | DE19740344A1 Liquid level sensor, e.g. for fuel tank |
| 03/18/1999 | DE19740058A1 Fuel gauge float production from plastic |
| 03/18/1999 | CA2303772A1 Apparatus and method for controlling the use of carbon dioxide in dry cleaning clothes |
| 03/17/1999 | CN2310986Y Melted metal level slag thick testing probe |
| 03/16/1999 | US5884231 Processor apparatus and method for a process measurement signal |
| 03/16/1999 | US5883591 Ultra-wideband impedance sensor |
| 03/16/1999 | US5882379 Dust collectors, filters, containers, sensors and pressure differential detectors with air flow |
| 03/11/1999 | WO1999012005A2 Shield for a sight gauge |
| 03/10/1999 | EP0901020A2 Apparatus and device for determining the level of sludge in a settling tank |
| 03/10/1999 | CN2309840Y Transfusion alarm device |
| 03/10/1999 | CN1210071A Fluid level detection system for ink in printing press |
| 03/10/1999 | CN1042404C Continuous casting ingot mould |
| 03/09/1999 | US5881207 Steam generator with automatic supply and a process for measuring the level of liquid in such a generator |
| 03/09/1999 | US5881117 Mid-loop fluid level measuring instrument for a nuclear power plant |
| 03/09/1999 | US5880480 Optical liquid level sensor including built-in test circuitry |
| 03/09/1999 | US5880423 Water level sensor |
| 03/09/1999 | US5880364 Non-contact ultrasonic micromeasurement system |
| 03/09/1999 | US5880356 Device for pressurizing a unified two-liquid propulsion subsystem geostationary satellites |
| 03/09/1999 | US5878793 Refillable ampule and method re same |
| 03/04/1999 | WO1999010714A1 A compensated capacitive liquid level sensor |
| 03/04/1999 | WO1999010713A1 Capacitance level sensor |
| 03/04/1999 | DE19737975A1 Waste water treatment flocculation sludge settling tank for sludge removal |
| 03/04/1999 | DE19735374A1 Device for measuring oil levels, esp. in sumps of motor vehicle IC engines |
| 03/03/1999 | EP0899546A1 Gauge guide, in particular for automotive vehicle, and fabrication method thereof |
| 03/03/1999 | EP0587728B1 Digital level sensing probe system |
| 03/02/1999 | US5877997 Pulse echo distance measurement |
| 03/02/1999 | US5877663 Microwave waveguide for tank level sensors |
| 03/02/1999 | US5875675 Apparatus for the measurement of liquid flow |
| 02/25/1999 | DE19734127A1 Steel container, e.g. transformer vessel, hydraulic container or tank, with liquid level indicator |
| 02/25/1999 | DE19728443C1 Container filling level monitoring electrode |
| 02/24/1999 | EP0898153A1 Microwave-transmission liquid-level detection device and method |
| 02/24/1999 | EP0897527A1 Improvements in magnetic float type liquid level gauges |
| 02/24/1999 | CN2308888Y Level detector |
| 02/24/1999 | CN2308887Y Observing mirror-float combined level gauge |
| 02/24/1999 | CN2308886Y Intelligent self-regulating level controller |
| 02/23/1999 | US5874899 Tank level gauge and sensor head therefor |
| 02/18/1999 | WO1999008077A1 Installation for measuring the content volume of milk collection tanks |
| 02/18/1999 | DE19730196A1 Filling level measuring using plumb bob method |
| 02/17/1999 | EP0897103A1 Apparatus and method for determining the quantity of fluid within a tank |
| 02/17/1999 | CN2308081Y High-temp. resistance float level meter |
| 02/17/1999 | CN2308080Y Weighted level indicator |
| 02/17/1999 | CN2308079Y Radio display for medicinal transfusion liquid level |
| 02/17/1999 | CN2308078Y Float-type liquid level display device |
| 02/16/1999 | US5872584 Apparatus for providing ink to an ink-jet print head and for compensating for entrapped air |
| 02/16/1999 | US5872509 Device for sensing the amount of oil in oil pans |
| 02/16/1999 | US5872494 Level gage waveguide process seal having wavelength-based dimensions |
| 02/16/1999 | CA2041231C Dynamic monitoring without mobile or permittivity contact, using a capacitive sensor |
| 02/12/1999 | CA2244766A1 System for monitoring fluid level |
| 02/11/1999 | WO1999006788A2 Distance measuring device and method for determining a distance |
| 02/11/1999 | WO1999006292A1 Inspection side panel for a container |
| 02/11/1999 | DE19733830A1 Vehicle fuel tank filling level measuring device |
| 02/10/1999 | EP0895582A1 Differential pressure device |
| 02/10/1999 | CN2307285Y Barometric bin level sensor |
| 02/10/1999 | CN2307284Y Far-end sensor channel selector suitable for hydroelectric engineering |
| 02/09/1999 | US5870695 For use in a process control system |
| 02/09/1999 | US5870024 Hot water heater leak protection system |
| 02/09/1999 | US5868376 Methods and apparatus for controlling flow of material past a flap valve |
| 02/09/1999 | US5868029 Method and apparatus for determining fluid level in oil wells |
| 02/04/1999 | DE19733630A1 Medical diagnosis urine flow and volume measuring sensor |
| 02/04/1999 | DE19729940A1 Printed circuit board with a slideway |
| 02/04/1999 | DE19726044A1 Liquid level gauge especially for plant container |
| 02/03/1999 | EP0895068A2 Level sensor |
| 02/03/1999 | EP0819061A4 Fluid level detection system for ink in a printing press |
| 02/03/1999 | CN2306490Y Magnetic liquid level display device |
| 02/03/1999 | CN2306489Y Circular raster light guide measurer for anti-explosion liquid level |
| 02/02/1999 | USRE36069 Portable wastewater flow meter |
| 02/02/1999 | US5866815 For indicating the level of material in a container |
| 02/02/1999 | US5866797 Integrated circuit embodied in a single semiconductor chip |
| 02/02/1999 | US5866426 Liquid detector |
| 01/28/1999 | DE19736178C1 Phase boundary detector for small fluid channels |
| 01/27/1999 | EP0893687A1 Underwater ammunition equipped with a water detector |
| 01/27/1999 | CN2305662Y Mechanical counting hoisting measurer for oil-water level |
| 01/27/1999 | CN2305661Y Liquid level test probe |
| 01/27/1999 | CN2305660Y 液位控制器 Level Controller |
| 01/26/1999 | US5862946 Gas dissolution under pressure |
| 01/26/1999 | US5862775 Sewer backup indicator |
| 01/26/1999 | US5862702 Sealing assembly for the sensing probe of a level detector |
| 01/21/1999 | DE19730593A1 System for measuring inclination of cylindrical containers for liquids |
| 01/20/1999 | EP0891535A1 Fluid sensor |
| 01/20/1999 | EP0891520A1 Fuzzy logic liquid level control |
| 01/20/1999 | EP0741895A4 Hydraulic fluid lead detection system and method |
| 01/20/1999 | CN2304901Y Single string hanging level sensor |
| 01/20/1999 | CN2304900Y Optic fiber level meter for liquefied chlorine |
| 01/20/1999 | CN2304899Y Two electrode level meter |
| 01/20/1999 | CN2304410Y On-wall infusion stand with automatic alarm as infusion stop |
| 01/20/1999 | CN1205768A System for measuring differential pressure, flow, and level |
| 01/19/1999 | US5862431 Toner powder level sensing using element and pulse signal and toner powder presence sensing using piezoelectric film |
| 01/19/1999 | US5861811 Fluid sensor |
| 01/19/1999 | US5860316 Capacitance probe |
| 01/14/1999 | WO1999001741A1 Molten glass viscosity and/or level meter |