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Class Information
Number: 340/618
Name: Communications: electrical > Condition responsive indicating system > Specific condition > Fluent material > Material level > Liquid
Description: Subject matter wherein the fluent material is a liquid.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| RE40933 |
Apparatus for flow detection, measurement and control and method for use of same |
Oct. 13, 2009 |
| 7592921 |
Apparatus for flow detection, measurement and control and method for use of same |
Sep. 22, 2009 |
| 7557722 |
Enclosure for a wastewater fluid level sensing and control system |
Jul. 7, 2009 |
| 7542866 |
Threshold setting for a radar level transmitter |
Jun. 2, 2009 |
| 7508312 |
Apparatus and method for determining a fluid level within an enclosed container |
Mar. 24, 2009 |
| 7492272 |
High liquid alarm system |
Feb. 17, 2009 |
| 7486179 |
Low-level oil sensor |
Feb. 3, 2009 |
| 7482939 |
Electrical drop surveillance |
Jan. 27, 2009 |
| 7483795 |
Pressure and temperature compensation algorithm for use with a piezo-resistive strain gauge type pressure sensor |
Jan. 27, 2009 |
| 7476310 |
Fuel filter for diesel engines with high pressure direct injection of common rail type and the like |
Jan. 13, 2009 |
| 7471208 |
Process for continuously monitoring a fluid storage system using synchronized sensors |
Dec. 30, 2008 |
| 7471206 |
Float assembly light indicator for Christmas tree stand |
Dec. 30, 2008 |
| 7471207 |
Wastewater fluid level sensing and control system |
Dec. 30, 2008 |
| 7423541 |
Excessive product usage detection using a level monitoring system |
Sep. 9, 2008 |
| 7423542 |
Water detection sensing system |
Sep. 9, 2008 |
| 7417552 |
Flood alarm |
Aug. 26, 2008 |
| 7405670 |
Method and system for detecting and isolating stray voltage |
Jul. 29, 2008 |
| 7369055 |
Water softener monitoring system |
May. 6, 2008 |
| 7327272 |
Apparatus for determining and/or monitoring a process variable |
Feb. 5, 2008 |
| 7319401 |
Radar level gauge system with variable alarm limits |
Jan. 15, 2008 |
| 7307538 |
Pump connector system |
Dec. 11, 2007 |
| 7304583 |
Device for detecting a defined filling level of a medium in a container |
Dec. 4, 2007 |
| 7298278 |
Automatic delivery/drain detection using a level monitoring system |
Nov. 20, 2007 |
| 7298281 |
System and method for verifying installation of a tank level monitor |
Nov. 20, 2007 |
| 7298280 |
Lighted fluid flow indication apparatus |
Nov. 20, 2007 |
| 7295125 |
Multi-sensor baby care monitoring system |
Nov. 13, 2007 |
| 7295126 |
Perforated plane moisture sensor |
Nov. 13, 2007 |
| 7265677 |
External device indicating that a tank is filled up |
Sep. 4, 2007 |
| 7250857 |
Multiplexer method and system for intrinsically safe applications and a multiplexer switch for use therein |
Jul. 31, 2007 |
| 7239246 |
System and method for detecting water leakage |
Jul. 3, 2007 |
| 7233252 |
Method and system of sewer scanning for water conservation |
Jun. 19, 2007 |
| 7224283 |
Enclosure for a wastewater fluid level sensing and control system |
May. 29, 2007 |
| 7221282 |
Wireless wastewater system monitoring apparatus and method of use |
May. 22, 2007 |
| 7221281 |
Apparatus for flow detection, measurement and control and method for use of same |
May. 22, 2007 |
| 7199388 |
Liquid level detecting device |
Apr. 3, 2007 |
| 7191072 |
Pressure and temperature measurement of a piezo-resistive device using differential channel of a ratiometric analog to digital converter |
Mar. 13, 2007 |
| 7182017 |
Beverage server with beverage detector |
Feb. 27, 2007 |
| 7161492 |
Mechanical self-cleaning probe via a jiggler |
Jan. 9, 2007 |
| 7158039 |
Liquid leakage sensor and liquid leakage detecting system |
Jan. 2, 2007 |
| 7151459 |
Wastewater fluid level sensing and control system |
Dec. 19, 2006 |
| 7145465 |
Liquid level sensor having a virtual ring |
Dec. 5, 2006 |
| 7135981 |
Fuel level variation detector for marine vehicle |
Nov. 14, 2006 |
| 7129832 |
High/low level alarm controller |
Oct. 31, 2006 |
| 7126486 |
Method and apparatus for moisture detection in exterior sheathing of residential and commercial buildings |
Oct. 24, 2006 |
| 7119699 |
Liquid sensor device, system and method |
Oct. 10, 2006 |
| 7095330 |
Disposable liquid level sensor having a virtual ring |
Aug. 22, 2006 |
| 7091868 |
Portable liquid level detector |
Aug. 15, 2006 |
| 7079037 |
System and method for indicating liquid level condition |
Jul. 18, 2006 |
| 7075443 |
Wastewater fluid level sensing and control system |
Jul. 11, 2006 |
| 7068175 |
Water level warning device |
Jun. 27, 2006 |
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