U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Did You Know...

...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 204/556 - With measuring, testing, or sensing


Subclass of Class 204 - Chemistry: electrical and wave energy
Definition: Process which includes measuring, detecting, or testing
No. of patents: 19
Last issue date: 07/20/2010


NumberTitleIssue Date
7758738Separating multiple components of a stream
A method of separating gaseous components, heavier liquid components and lighter liquid components of a stream including the steps of conducting the stream between spaced apart electrodes in a treatment vessel, supplying from a voltage source an AC voltage of at lea...
07/20/2010
7662268Method and system for measuring the zeta potential of the cylinder's outer surface
The present invention discloses a method for measuring the zeta potential at the cylinder's outer surface. In the measuring cell, the cylinder is held coaxially inside a reference tube and a given solution is forced to flow through the annular flow channel between t...
02/16/2010
7384791Method of analyzing blood
A method of analyzing blood includes delivering a blood sample to a test device, applying a spatially varying electric field to the blood sample to provide a depleted cell concentration in a portion of the blood sample, and sensing a property of the portion of the b...
06/10/2008
7374603Particle transport and near field analytical detection
Particle collection, transport, and detection systems are disclosed. The systems are uniquely adapted for collecting or concentrating particles from a flowing medium and then transporting the collected particles to a desired location or for subsequent analysis. Elec...
05/20/2008
7373276Quantitative evaluation of emulsion stability based on critical electric field measurements
A method for quantitative evaluation of emulsion stability using Critical Electric Field (CEF) determinations over a range of conditions, such as a range of temperatures, demulsifier compositions, or demulsifier concentrations. The method includes determining the CE...
05/13/2008
7351320Multiple frequency electrostatic coalescence
A method of augmenting the separation of immiscible heavier and lighter components of an emulsion including the steps of conducting the emulsion into a treatment vessel, providing an AC voltage source, employing from the source an AC voltage of at least one selected...
04/01/2008
7309442Fluid treatment method
A fluid treatment system for reducing odor, bacteria, and biological oxygen demand from a fluid having at least one tube, a control box, and a pump. The at least one tube has a plurality of conductors in electrical communication with the control box. The control box...
12/18/2007
7235123Particle transport and near field analytical detection
Particle collection, transport, and detection systems are disclosed. The systems are uniquely adapted for collecting or concentrating particles from a flowing medium and then transporting the collected particles to a desired location or for subsequent analysis. Elec...
06/26/2007
6860979Dual frequency electrostatic coalescence
A method of augmenting the separation of immiscible heavier and lighter components of an emulsion including the steps of passing the emulsion into a treatment vessel, establishing at least one dual frequency electric field within the vessel and selectably varying th...
03/01/2005
6706170System for treating fluids in an electric field
System for treating fluids, especially water, in a pipe to resist scale deposits from building up in the pipe, includes a field generating coil (10) mounted exteriorly of the pipe, an electronic circuit (14) for energizing the coil to develop an altern...
03/16/2004
6468410Method for synthesis and characterization of electrode materials
An apparatus that is useful for evaluating and optimizing electrochemical processes and for electrochemically characterizing materials includes a base or substrate carrying a plurality of electrodes, at least one housing member that is secured to the base...
10/22/2002
6319705Microchip device for electrophoresis
A microchip device for electrophoresis includes not only a microchip having a separation flow route for separating a sample electrophoretically and an electrical power source for applying a migration potential difference along the separation flow route bu...
11/20/2001
6255551Method and system for treating contaminated media
A process treats contaminated media and comprises detecting a non-uniform contaminated media property selected from electrical conductivity or electroosmotic permeability; and selectively applying an electric field to the contaminated media to effect the ...
07/03/2001
6113765Methods for enhanced resolution of hydrocarbon continuous emulsions or dispersions with conductivity modifiers
A method of increasing the efficiency of the electrostatic separation of a continuous hydrocarbon emulsions or dispersion by increasing the electrical conductivity of the emulsion or dispersion. An increase in electrical conductivity is provided with an e...
09/05/2000
5858799Surface plasmon resonance chemical electrode
This disclosure describes new methods and devices for sensing redox-active analytes in solution. The invention combines a surface plasmon resonance (SPR) sensor and a chemical electrode sensor. A conducting layer which supports SPR is attached to a voltag...
01/12/1999
5783090Ionic water treatment system
An apparatus for reducing micro-organism concentrations in a liquid having a surface has a portion of a first electrode that is disposed within the liquid. A portion of a second electrode is also disposed within the liquid. The second electrode is spaced ...
07/21/1998
5582701Ionic liquid-channel charge-coupled device
An ionic liquid-channel charge-coupled device that separates ions in a liquid sample according to ion mobility characteristics includes a channel having an inner wall that has a matrix liquid disposed within. An insulating material surrounds the channel, ...
12/10/1996
5384023Solvent extraction method and apparatus for recovering analytes
An improved liquid/liquid solvent extraction method and apparatus utilizes an external electrode for creating an electric field within an extraction cell to shatter aqueous sample droplets flowing within a non-conductive solvent. The external electrode is...
01/24/1995
4031007Slop oil treating system
A conductive interface forms between the oil and water layers in a coalescer apparatus for treating slop oil. The presence of this interface is detected by (a) a capacitance probe and (b) extensions on the coalescer plates. Changes in the feed and dischar...
06/21/1977
 
Sign InRegister
Username  
Password   
forgot password?