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"To place a man in a multi-stage rocket and project him into the controlling gravitational field of the moon where the passengers can make scientific observations, perhaps land alive, and then return to earth--all that constitutes a wild dream worthy of Jules Verne. I am bold enough to say that such a man-made voyage will never occur regardless of all future advances."
Lee deForest, American radio pioneer ; 1957
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| Number | Title | Issue Date |
| 7494577 | Tandem isotachophoresis/zone electrophoresis method and system A method of separating components having a given negative or positive charge and contained in a sample is disclosed. The method involves, in one embodiment, loading a microchannel with a sample, placed between a trailing-edge electrolyte having a selected concentrat... | 02/24/2009 |
| 7357852 | Bubble-free and pressure-generating electrodes for electrophoretic and electroosmotic devices Bubble-free electrodes, electrochemical cells including bubble-free electrodes, analytical devices, and methods for preparing and using them are provided. The analytical devices each include at least one bubble-free electrode. Analytical devices that include an elec... | 04/15/2008 |
| 7355186 | Charged particle beam device with cleaning unit and method of operation thereof The invention provides a charged particle beam device, an emitter module for emitting charged particle beams and a method of operation thereof. Thereby, a charged particle beam emitter (15) emitting charged particles along an optical axis (1) is realiz... | 04/08/2008 |
| 7223325 | Method for orthogonal analyte stacking/injection systems in electrophoresis In the present capillary electrokinetic chromatograpy method, analytes are injected by electroosmotic flow directly from a sample matrix into a separation buffer containing an electrokinetic vector with an opposite mobility. Analytes can now be injected at the veloc... | 05/29/2007 |
| 7211183 | Analysis and fractionation of particles near surfaces A method and apparatus for fractionation of a mixture of particles and for particle analysis are provided, in which LEAPS (“Light-controlled Electrokinetic Assembly of Particles near Surfaces”) is used to fractionate and analyze a plurality of particles suspende... | 05/01/2007 |
| 7016022 | Dual use detectors for flow cytometry An optical alignment system for aligning a light beam with a core flow in a flow stream. The flow stream may have a sheath fluid and a core flow, where the core flow has a current position within the flow stream. A light source may be used to produce a light beam, a... | 03/21/2006 |
| 7016462 | Ionic pre-concentration XRF identification and analysis device, system and method A device, system and method for detecting and measuring concentrations of elements in fluids comprises: flowing a fluid through a central flow interelectrode gap of an ionic preconcentration cell separating an upper high specific surface area electrode from a lower ... | 03/21/2006 |
| 6991941 | Light-controlled electrokinetic assembly of particles near surfaces A method and apparatus for the manipulation of colloidal particulates and biomolecules at the interface between an insulating electrode such as silicon oxide and an electrolyte solution. Light-controlled electrokinetic assembly of particles near surfaces relies on t... | 01/31/2006 |
| 6706163 | On-chip analysis of particles and fractionation of particle mixtures using light-controlled electrokinetic assembly of particles near surfaces A method and apparatus for fractionation of a mixture of particles and for particle analysis are provided, in which LEAPS (“Light-controlled Electrokinetic Assembly of Particles near Surfaces”) is used to fractionate and analyze a plurality of particles suspende... | 03/16/2004 |
| 5817225 | Electrophoresis system for the purification, concentration and size fractionation of nucleic acids The present invention is an electrophoretic unit for the purification, concentration, and size fractionation of nucleic acids contaminated by organic acids, such as humic acids. The electrophoretic unit includes a counter ion, Bis (2-hydroxyethyl)-imino-t... | 10/06/1998 |
| 5779891 | Non-fouling flow through capacitor system A foul-resistant, flow-through capacitor, a system employing the capacitor and a method of separation is disclosed wherein the capacitor has at least one anode and cathode electrode pair. The electrodes are formed of high surface area, electrically conduc... | 07/14/1998 |
| 5620597 | Non-fouling flow-through capacitor A foul-resistant, flow-through capacitor, a system employing the capacitor and a method of separation is disclosed wherein the capacitor has at least one anode and cathode electrode pair. The electrodes are formed of high surface area, electrically conduc... | 04/15/1997 |
| 5614072 | Increased efficiency of electrophoretic separations by mobility matching The invention concerns electrophoresis and methods and electrolyte compositions for decoupling or isolating the dual functions of the electrolyte composition in order to increase separation selectivity or reduce electromigration dispersion, or both. An el... | 03/25/1997 |
| 5593565 | Devices for separating particles contained in a fluid In order to separate, within a fluid (1), certain particles (2) contained therein, this fluid is arranged in a corridor (C) partly defined by two faces which are close together and substantially parallel to each other and to the direction of separation E ... | 01/14/1997 |
| 5562812 | Free flow electrophoresis device for biomolecule purification and separation in zero and one G An electrophoresis device is disclosed which may be partially disassembled and sterilized in an autoclave. The device includes a base and support framework extending from the base. A separation column including a separation chamber having a pair of plates... | 10/08/1996 |
| 5439571 | Apparatus and method for enhanced resolution continuous flow zone electrophoresis An apparatus and method of continuous flow zone electrophoresis for separation of particulates or biological samples, including cells and sub-cellular components, in a separation chamber configured to enhance separation of the sample components. The peak-... | 08/08/1995 |
| 5427663 | Microlithographic array for macromolecule and cell fractionation A sorting apparatus and method for fractionating and simultaneously viewing individual microstructures, such as free cells, viruses, macromolecules, or minute particles in a fluid medium. The sorting apparatus is composed of a substrate having a receptacl... | 06/27/1995 |
| 5306412 | Method and apparatus for improving electrospray ionization of solute species The subject invention teaches the use of mechanical vibration to enhance the electrostatic dispersion of sample solutions into the small, highly charged droplets that can produce ions of solute species for mass spectrometric analysis. Such vibration turns... | 04/26/1994 |
| 5209834 | Ordered transport and identification of particles A method and apparatus are provided for application of electrical field gradients to induce particle velocities to enable particle sequence and identification information to be obtained. Particle sequence is maintained by providing electroosmotic flow for... | 05/11/1993 |
| 5200068 | Controlled charge chromatography system A controlled charge chromatography column for the purification of a fluid-containing material, which column comprises a chromatographic column having an inlet for the introduction of a fluid to be purified and an outlet for the discharge of the purified f... | 04/06/1993 |
| 5200050 | Electrophoretic processor and methods An electrophoretic processor for separating proteins and other chemicals exhibiting varying electrophoretic mobilities. The preferred processor includes a rotor which turns within a stator to define a processing chamber therebetween. The rotor and stator ... | 04/06/1993 |
| 5196115 | Controlled charge chromatography system A controlled charge chromatography column for the purification of a fluid containing materials, which column comprises a chromatographic column having an inlet for the introduction of a fluid to be purified and an outlet for the discharge of the purified ... | 03/23/1993 |
| 5183548 | System and method for continuous separation of isotopes The invention is both a system and method for continuously separating heavier from lighter isotopes of a particular element, such as zirconium. The system comprises a housing, a column assembly rotatably mounted with respect to the housing which includes ... | 02/02/1993 |
| 5180480 | Apparatus for the preparation of samples, especially for analytical purposes An apparatus (1) is used for the preparation or extraction of samples, especially for analytical purposes, from a liquid or using a carrier liquid, where only very little liquid and substrate is available or is to be used and where the sample separation i... | 01/19/1993 |
| 5092972 | Field-effect electroosmosis Apparatus and process for controlling the rate of electroosmosis due to a first electric potential in an electrically insulating capillary, in which a second electric potential is applied between the electrically insulating walls of the capillary and a li... | 03/03/1992 |
| 5071536 | High resolution continuous flow electrophoresis Recycle continuous flow electrophoresis (RCFE) makes use of an electrophoresis chamber having a plurality of inlet ports and a plurality of outlet ports disposed opposite the inlet ports. The flow exiting through an outlet port is recycled to an inlet por... | 12/10/1991 |
| 5043048 | Electromembrane apparatus and process for preventing membrane fouling An apparaatus and method for continuously removing liquid from an aqueous suspension; the apparatus consists of a filter housing; an electrofilter disposed within the housing to provide a crossflow chamber and filtrate chamber within the housing; an inlet... | 08/27/1991 |
| 5022972 | Process for measuring and determining zeta-potential in a laminarly flowing medium for practical purposes The invention relates to a measuring method for determining the zeta-potential ZP of a material suspended in a liquid medium which comprises streaming the suspension in a laminar flow, subjecting the system to the effect of D.C. voltage, and determining t... | 06/11/1991 |
| 5009760 | System for measuring electrokinetic properties and for characterizing electrokinetic separations by monitoring current in electrophoresis The electroosmotic velocity of an electrolyte is determined by displacing the electrolyte which fills a capillary tube by a second electrolyte which has the same composition as the first electrolyte but of a different concentration. The current flowing th... | 04/23/1991 |
| 4941958 | Device and method for detecting ionic components in solution A device and method for sensing analyte ionic components are described. The device includes at least one detecting element including a first end, a second end, a first ion exchange medium extending from the first end to the second end, and a second ion ex... | 07/17/1990 |
| 4900414 | Commercial separation system and method using electrokinetic techniques A commercial electrokinetic separation system extracts charged particles from fluids and separates the particles into discrete separation bands. An electrokinetic column of extended length has a plurality of alternatingly spaced layers of electrokinetic m... | 02/13/1990 |
| 4897169 | Process and apparatus for recycling isoelectric focusing and isotachophoresis The disclosure is directed to a process and apparatus for isoelectric focusing and isotachophoresis of fluids. Recycling of the process fluid is established in a first direction through an electrophoretic chamber having parallel walls, the electric field ... | 01/30/1990 |
| 4842701 | Combined electrophoretic-separation and electrospray method and system A system and method for analyzing molecular constituents of a composition sample includes: forming a solution of the sample, separating the solution by capillary zone electrophoresis into an eluent of constituents longitudinally separated according to the... | 06/27/1989 |
| 4661225 | Method and apparatus for measuring the electrophoretic mobility of migrating particles An apparatus for measuring the electrophoretic mobility of migrating particles in a suspending medium under the influence of an applied electric field comprising an electrophoresis chamber, means for illuminating the electrophoresis chamber, a microscope ... | 04/28/1987 |
| 4648715 | Electrophoretic light scattering with plural reference beams, apparatus and method Multichannel electrophoresis apparatus employing electrophoretic light scattering as a means for characterizing the particles under study. The apparatus is characterized by the ability to measure light scattered simultaneously using a plurality of local o... | 03/10/1987 |
| 4617104 | Cell unit for observing electrophoresis The disclosed invention relates to a cell unit for use in observing an electophoresis which utilizes a measurement cell which accommodates a liquid specimen. A pair of conduit elements are used to introduce and discharge the liquid specimen into and from ... | 10/14/1986 |
| 4602989 | Method and apparatus for determining the zeta potential of colloidal particles A method and apparatus for determining the zeta potential of particles in a suspension comprising: a cell containing at least a portion of the suspension of particles; a first electrode and a second electrode disposed in a cell; means for producing an ele... | 07/29/1986 |
| 4535285 | Apparatus for determining an electrical characteristic of a fibrous dispersion In the formation of a paper web from stock fed to a Foudrinier wire, the Zeta Potential is an important parameter. A measure of Zeta potential is made by measuring the streaming potential developed in a vertically-arranged cell having a horizontal mesh th... | 08/13/1985 |
| 4515676 | Cell unit for observing electrophoresis A cell unit for observing electrophoresis comprising a seal member in the form of an endless loop having penetrating holes passing therethrough between outside and inside of the loop at opposing positions of a circumferential wall thereof, a cell situated subs... | 05/07/1985 |
| 4456513 | Method of and apparatus for measuring electrophoretic mobility In the method of and apparatus for measuring the electrophoretic mobility, the electrophoretic mobility for the particles in a test sample is determined by measuring the apparent electrophoretic mobility at the positions for each of a plurality of differe... | 06/26/1984 |
