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5296114 Electrophoretic separating device and electrophoretic separating method  
In an electrophoretic separating device, a channel defining a separating path is constructed in the form of a closed loop. A sample to be separated is introduced via a feed opening into an...
5282942 Methods and apparatus for separating and mobilizing solutes in a solute mixture  
The present invention provides processes for isoelectric focusing ("IEF") and associated detection, which incorporates a dynamic means of electroosmotic flow ("EOF") control during IEF and/or...
5269901 HPCE capillary cartridge for uncoiled capillaries with liquid coolant  
A cartridge for high performance capillary electrophoresis is constructed to accommodate a capillary with a flexible length of tubing surrounding it for the passage of a liquid coolant....
5264101 Capillary electrophoresis molecular weight separation of biomolecules using a polymer-containing solution  
A capillary tube with a charged inner surface for use in capillary electrophoresis and methods. The tube is filled with an electrolyte solution containing 0.05-30% weight/weight of a hydrophilic...
5262031 Electroosmotic flow control apparatus for capillary electrophoresis  
An electrophoretic apparatus that is useful for separation of analytes, such as proteins, comprises a capillary tube that has an interfacial layer bonded to reduce interactions between the bore...
5244560 Method of fabrication for capillary electrophoresis and electrochemical detector for the same  
An improved electrochemical detector for use in capillary zone electrophoresis having a working electrode of the order of magnitude of 32 microns in diameter inserted into a separation capillary...
5240585 Conductive bridge for external control of electroosmotic flow  
An electrophoresis system for controlling electroosmotic flow by affecting a zeta potential, wherein a conductive bridge provides continuity of control. A conductive coating on an optically...
5228969 Capillary electrophoresis apparatus including a capillary tube having an incorporated optical device  
A capillary electrophoresis apparatus with detection by fluorescence including an optical device incorporated in the capillary tube at the region of with the fluorescence detection zone. Depending...
5223114 On-column conductivity detector for microcolumn electrokinetic separations  
An on-column conductivity detector for microcolumn electrokinetic separation systems is disclosed. The detector is based on the column itself, the column having a largest internal cross-sectional...
5221447 Hydrophilic polymer coating of high pH stability for silica surfaces for suppression of electroendomosis and solute adsorption  
Silica-containing surfaces, such as the inner wall of a quartz or fused silica capillary used in capillary electrophoresis, are activated by a suitable linking agent which combines with the...
5213669 Capillary column containing a dynamically cross-linked composition and method of use  
Disclosed herein is a capillary column containing a dynamically cross-linked composition and method of use. In a particularly preferred embodiment, the dynamically cross-linked composition...
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...
5202010 Automated capillary electrophoresis apparatus  
Apparatus comprises an analyte concentrator (one or more) for insertion into a capillary tube and containing various structures for carrying chemical substances in the flow path for attraction or...
5198091 Capillary cartridge for electrophoresis  
A cartridge for holding a capillary for electrophoresis. The cartridge has a body defining a passage along which the capillary is threaded. Exits are provided on the body for extending the ends of...
5180475 System and method for controlling electroosmotic flow  
A system and method for controlling the rate of electroosmotic flow in capillary electrophoresis. A first high voltage power supply is electrically connected to the inlet end of a capillary tube,...
5169510 Ion-permeable polymer joint for use in capillary electrophoresis  
Improved capillary electrophoresis (CE) apparatus (10) is provided which includes an intermediate grounding joint (34) serving to isolate delicate electrochemical detectors (32, 54, 58) from the...
5164064 HPE capillary cartridge with exposed retractable capillary ends  
A capillary cartridge for high performance electrophoresis is constructed in two parts--an internal cooling block and an external housing, both constructed to permit sliding of the cooling block...
5143753 Suppression of electroosmosis with hydrolytically stable coatings  
Surfaces of silica-containing materials, such as the inner walls of silica capillaries, used in chromatographic, particularly electrophoretic, separations are coated with an organic polymer layer...
5131997 Capillary zone electrophoresis cassette  
An apparatus for electrophoretic separation comprising a fixed support structure and a cassette shell which is removably attached to the support device. Within the cassette shell is a basket...
5126025 Method and apparatus for effecting capillary electrophoresis fraction collection on a membrane  
A sample is injected into a capillary tube of a capillary electrophoresis apparatus. A sample solute on a porous layer is positioned in contact with an entrance end of the capillary tube and...
5126021 Low-viscosity polymer solution for capillary electrophoresis  
A capillary electrophoresis element is disclosed. The elements includes a capillary elctrophoresis tube containing a low-voscosity polymer solution having a selected mesh size and low-solution...
5122253 Transverse forced gas cooling for capillary zone electrophoresis  
An apparatus for capillary zone electrophoresis having a selectively removable capillary cassette, the internal walls of which define a toroidal capillary region and a gas flow path therethrough....
5114768 Surfaces with reduced protein interactions  
A solid surface that is exposed to protein solutes in use, such as medical implants or capillary tubes useful in capillary zone electrophoresis, is defined by or carries a polymer. An interfacial...
5114555 Continuous isoelectric separation  
A method and apparatus for the continuous separation of a target protein from a protein mixture containing two or more proteins and at a pH equal to the pI of the target protein is disclosed. The...
5110431 On-capillary gap junction for fluorescence detection in capillary electrophoresis  
A junction reactor that aligns a pair of capillaries substantially collinearly, end-to-end that allows a small gap to be produced between these two ends. An applied voltage difference between the...
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...
5084150 Selective high performance electrokinetic separations employing the surface of moving charged colloidal particles  
An electrokinetic method for separating molecular species employs the surface of moving charged colloidal particles in a buffered dispersing medium, in a process which combines electrophoresis and...
5082559 Glass chromatography capillary with relatively thick coating  
Glass capillaries having an internal diameter of a few micrometers are internally provided with a relatively thick polymer film by in-situ polymerization of suitable monomers and/or oligomers in a...
5019236 Retractable member for fluid, optical and electrical communication in capillary zone electrophoresis  
An apparatus for operatively connecting an electrophoresis capillary tube to a housing assembly, wherein the connecting involves fluid, optical and electrical communication. A capillary cassette...
5017540 Silicon hydride surface intermediates for chemical separations apparatus  
The present invention produces very stable, covalently bonded separation substrates for separations application such as liquid and gas chromatography as well as capillary zone electrophoresis. An...
5006313 Halogenated surface with reduced protein interaction  
A method for treating a solid surface exposable to protein solutes is provided that reduces interactions of the protein solutes with the surface. Thus, a small bore capillary tube, useful for...
4931328 Capillary tube with reduced protein interactions and controllable electroosmotic flow  
A method for treating capillary walls exposable to protein solutes is provided that reduces interactions of the protein solutes with the wall and that permits control of electroosmotic flow within...
4908112 Silicon semiconductor wafer for analyzing micronic biological samples  
An analytical separation device in which a capillary sized conduit is formed by a channel in a semiconductor device and the channel is closed by a glass plate. Electrodes are positioned in the...
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...
4816123 Method of fabricating capillary electrophoresis separation channels  
The basic concept of this invention involves the use of a wire or capillary tube as a template strand. The outside diameter and shape of the template strand correspond to the inside diameter and...
4690749 Polymer-coated surfaces to control surface zeta potential  
A method for eliminating or controlling electroosmosis and other zeta potential related phenomena in electrophoresis comprising conducting electrophoresis employing electrophoretic surfaces coated...
4680201 Coating for electrophoresis tube  
Coated capillary tubes useful for performing free electrophoretic separation techniques are prepared by reacting the interior wall of the tube with a bifunctional compound having a first...
4557955 Shaped articles which are composed of a copolymer containing fluorine groups and which are selectively permeable to liquids and gases and are simultaneously oleophobic and oleophilic  
The invention relates to films and tubular structures which are selectively permeable to liquids and gases which are based on a copolymer composed of a copolymerized fluorinated olefin,...
4364670 Electrophoretic elapsed time indicator  
An elapsed time indicator is constructed to operate by electrophoresis wherein light colored particles suspended in an organic liquid are caused to move in a tube device by applied electric...
4217193 Method and apparatus for isoelectric focusing without use of carrier ampholytes  
An ampholyte is purified by being enclosed in a capillary system forming a convection-free zone, direct current being passed through said zone. The electrolyte contains at least one buffering ion...
4040940 Electrophoretic fractional elution apparatus employing a rotational seal fraction collector  
Electrophoretic fractional elution apparatus has a column with a rotating seal joint at which a thin jet of eluting buffer is directed across the lumen of the electrophoretic column in a direction...
3948753 Apparatus for isotachophoretical separation  
Apparatus for isotachophoretical separation consists of a capillary tube communicating with the sampling zone of a separating column between the leading and terminating electrolytes which are...
3728145 METHOD FOR TREATING A TRANSPARENT TUBE FOR USE IN AN OPTICAL ANALYZING APPARATUS  
3704223 DIALYSIS APPARATUS WITH CAPILLARY EXCHANGER  
3539494 CHROMATOGRAPHIC SEPARATION