...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 7758738 | Separating 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 |
| 7662268 | Method 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 |
| 7384791 | Method 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 |
| 7374603 | Particle 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 |
| 7373276 | Quantitative 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 |
| 7351320 | Multiple 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 |
| 7309442 | Fluid 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 |
| 7235123 | Particle 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 |
| 6860979 | Dual 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 |
| 6706170 | System 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 |
| 6468410 | Method 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 |
| 6319705 | Microchip 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 |
| 6255551 | Method 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 |
| 6113765 | Methods 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 |
| 5858799 | Surface 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 |
| 5783090 | Ionic 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 |
| 5582701 | Ionic 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 |
| 5384023 | Solvent 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 |
| 4031007 | Slop 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 |