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Class Information
Number: 73/290R
Name: Measuring and testing > Liquid level or depth gauge
Description:










Sub-classes under this class:

Class Number Class Name Patents
73/298 Exploring tube 29
73/305 Float 194
73/299 Hydrostatic pressure type 169
73/304R Immersible electrode type 540
73/323 Sight glass 127
73/297 Test cock type 3
73/295 Thermal type 275
73/290B Ullage volume 74
73/290V Vibratory type 691
73/296 Weighing type 78
73/294 With funnel or hose nozzle 21
73/293 With illumination 280
73/291 With other measuring device 161


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

Patent Number Title Of Patent Date Issued
8706995 Field device with separated memory areas Apr. 22, 2014
8701483 Device for emulsion measuring by means of a standpipe Apr. 22, 2014
8695421 Fuel pump module including a horizontal sender gauge Apr. 15, 2014
8686895 Pulsed radar level gauge system with higher order harmonic regulation Apr. 1, 2014
8671751 Liquid level detecting apparatus Mar. 18, 2014
8659472 Method and apparatus for highly accurate higher frequency signal generation and related level gauge Feb. 25, 2014
8656773 Rationality diagnostic device for alcohol concentration sensor Feb. 25, 2014
8650949 Liquid level sensor frequency output system Feb. 18, 2014
8646329 Tank sensor circuit board for a fill level sensor in a vehicle tank Feb. 11, 2014
8643496 Contact for fluid level detection apparatus and fluid level detection apparatus Feb. 4, 2014
8640539 Device for treating specimens and method for determining the fill level of reagent containers Feb. 4, 2014
8641384 Solid state sump pump control Feb. 4, 2014
8631696 Apparatus and method for monitoring tanks in an inventory management system Jan. 21, 2014
8616053 Method and device for monitoring the fill level of a liquid in a liquid container Dec. 31, 2013
8620603 Fluid level sensing Dec. 31, 2013
8601867 Magnetostrictive probe having phase separation float assembly Dec. 10, 2013
8587443 Gas level display controller, gas level display device, and gas level display control method Nov. 19, 2013
8578770 Encapsulated liquid level sensor device Nov. 12, 2013
8567244 Liquid level transducer with isolated sensors Oct. 29, 2013
8567242 Pressure sensor venting system Oct. 29, 2013
8567243 Method for fill level measurement Oct. 29, 2013
8555716 Device for measuring foamed media Oct. 15, 2013
8549910 Fuel system electro-static potential differential level sensor element and hardware/software configuration Oct. 8, 2013
8515694 Methods and systems for gauging multiple hydrocarbon fuel mixtures Aug. 20, 2013
8482295 Electromagnetic bath level measurement for pyrometallurgical furnaces Jul. 9, 2013
8474314 Fill level switch and sensor element for a fill level switch Jul. 2, 2013
8450998 Digital quantity gauge for an agricultural aircraft payload hopper using a magnetostrictive linear displacement transducer (MLDT) May. 28, 2013
8448665 Fuel overflow alarm system May. 28, 2013
8448510 Device for monitoring the level of the condensate collected in the measuring cylinder of a standardized distillation apparatus and method implemented by using this device May. 28, 2013
8443664 Equalizing container for a hydraulic motor vehicle brake system May. 21, 2013
8446284 Low oil indication May. 21, 2013
8447367 Process measurement instrument adapted for wireless communication May. 21, 2013
8438930 Mechanical signal processing accumulator attenuation device and method May. 14, 2013
8442783 Method of and apparatus for recording fuel supplied to a vehicle May. 14, 2013
8424376 Container for physiological fluids Apr. 23, 2013
8418550 Method and apparatus for capacitive sensing the top level of a material in a vessel Apr. 16, 2013
8416090 Wireless fuel level sensor for a vehicle fuel tank Apr. 9, 2013
8417483 Determination and control of wellbore fluid level, output flow, and desired pump operating speed, using a control system for a centrifugal pump disposed within the wellbore Apr. 9, 2013
8412473 Event monitoring and detection in liquid level monitoring system Apr. 2, 2013
8407015 Method and apparatus for monitoring and controlling an electrical boiler Mar. 26, 2013
8397566 Apparatus for transferring high-frequency signals comprising overlapping coupling regions that are serially connected Mar. 19, 2013
8365592 Measuring probe for a measuring device Feb. 5, 2013
8350751 Radar level gauge with improved radar window Jan. 8, 2013
8345924 Electronic device and method for monitoring water level Jan. 1, 2013
8319680 Radar liquid level detection using stepped frequency pulses Nov. 27, 2012
8302578 Effects of biodiesel fuel on fuel dilution of engine oil Nov. 6, 2012
8302473 Electro-optic liquid level sensing system for aircraft beverage brewing Nov. 6, 2012
8301043 Liquid-level detection device, image forming device, and liquid containing device Oct. 30, 2012
8299931 Ice safety device Oct. 30, 2012
8287806 Pipetting apparatus with integrated liquid level and/or gas bubble detection Oct. 16, 2012

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19










 
 
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