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Patent Searching and Data


Matches 401 - 450 out of 1,661

Document Document Title
WO/1998/045693A1
Methods are provided for the fabrication of polymeric microchannel structures having enclosed microchannels of capillary dimension. The microchannel structures are constructed of a base member (12) and a cover member (14), sealed togethe...  
WO/1998/039084A1
A method for forming filtration members (60) using an electric potential to control the migration of electrically charged particles and hence to control the formation of a membrane layer (70) on a substrate (18). In one embodiment, elect...  
WO/1998/036821A1
The invention provides a continuous flow apparatus and method for purifying charged substances from solutions or suspensions by isoelectric focusing on an industrial scale. The apparatus comprises a separating chamber, a pair of vertical...  
WO/1998/032525A1
An electrochemical cell (20) for removing ions from a solution stream comprises a housing (25) having first (40) and second (45) electrodes. At least one water-splitting ion exchange membrane (100) is positioned between the electrodes, t...  
WO/1998/023379A1
The invention concerns a method for separating particles or molecules whereby these particles or molecules are introduced in a separating medium and a moving force is applied to them in said medium. The method is characterised in that th...  
WO/1998/013689A1
In order to isoelectrically separate particles with a pH-dependent net charge, the particles are exposed in a guiding liquid to electric field forces. The pH value of the guiding liquid is set in such a way that at least one predetermine...  
WO/1998/010267A1
A micro flow system is provided for separating particles, comprising a microfabricated member having a flow channel (5) defined therein for guiding a flow of a fluid containing the particles through the flow channel, first inlet means (2...  
WO/1998/003561A1
The object of this invention is to provide the method for concentrating aqueous PTFE emulsion in the shortest time compared to conventional methods and its apparatus, which waste water is not produced, the formation of flocculative mater...  
WO/1998/003245A1
This invention relates to tubular and flat sheet membrane filters, particularly those filters whose ability to separate particulate, molecular or ionic contaminants from suspensions is enhanced by the addition of electric fields to the f...  
WO/1997/047390A1
This invention provides an extraction device and method for extracting desired particles from a sample stream (2) containing the desired particles. The device comprises a sample stream inlet (1); an extraction stream inlet (5); an extrac...  
WO/1997/041070A1
Apparatus for conducting electrophoresis separation therein. The apparatus includes a chamber (11) having therein a body of separating gel (18) for carrying therein an electrophoresis separation and electrodes (24, 26) for connecting the...  
WO/1997/040078A1
Thermoreversible hydrogels comprising nonionic, uncrosslinked copolymers, and methods of their use in electrophoresis, are provided. The subject copolymers comprise polyacrylamide backbones, where a portion of the acrylamide monomeric un...  
WO/1997/038300A1
Microchannels having at least an acrylic inner surface and methods of their use in electrophoretic applications are provided. The subject microchannels may be in the form of a variety of configurations suitable for holding an electrophor...  
WO/1997/036171A1
A device for separating charged particles comprising: an upper substate (11); a lower substrate (12); separation lanes (15) defined on the upper substrate, a first plurality of electrodes (21, 22...); a first pad (18), said first plurali...  
WO/1997/034689A1
Apparatus is described for carrying out chemical, physical or physico-chemical reactions between particles suspended in a liquid medium. The liquid medium is present in channels (1-8, 10, 40, 41, 42, 52, 72) on a generally planar substra...  
WO/1997/031026A1
A polyhydroxy polymer substituted with covalently linked alkene groups, characterized in that the alkene groups are styryl ether groups. A gel obtained by polymerisation of a styryl ether substituted polyhydroxy polymer. A surface that h...  
WO/1997/027933A1
The present disclosure is directed to a novel apparatus and novel methods for the separation, characterization, and manipulation of matter. The invention combines the use of frequency-dependent dielectric and conductive properties of par...  
WO/1997/026288A1
Thermoreversible hydrogels comprising non-ionic, linear copolymers, and methods of their use in electrophoresis, are provided. The subject copolymers comprise polyacrylamide backbones, where a portion of the acrylamide monomeric units co...  
WO/1997/026071A1
The use of a gel produced by polymerization of a dextran derivative which exhibits groups that contain an alkene structure, for separating nucleic acid by electrophoresis.  
WO/1997/020202A1
A preparative gel electrophoresis device comprising: a lower chamber (11) containing a first buffer (21) and an electrode (10); a balance chamber (22) sealable by tape (28); an upper chamber (7) including an inlet (27) sealable by tape (...  
WO/1997/007065A1
Dewatering of an aqueous sludge such as a sewage sludge is effected by mixing fibrous material (such as shredded cellulosic material) into the sludge and simultaneously applying (a) vacuum or pressure to the mixture when supported on a f...  
WO/1997/003695A1
The lymphocyte activation gene (LAG-3) is a member of the immunoglobulin superfamily that is selectively transcribed in human activated T and NK cells. Surface LAG-3 expression correlated with IFN-'gamma' but not IL-4, production in anti...  
WO/1996/034276A1
A substantially closed cassette for conducting therein electrophoresis separation which includes a closed chamber (11), the chamber (11) includes therein a body of gel (18), at least one ion source (20, 22) having a volume smaller than t...  
WO/1996/032524A1
A electrokinetic system (10) and method are provided for removing charged species from a sample (9) in which said charged species is commingled with at least one radionuclide. The apparatus comprises an anode compartment (11) comprising ...  
WO/1996/031771A1
An electrophoresis device (10) is disclosed which may be partially disassembled and sterilized in an autoclave. The device (10) includes a base (12) and support framework (14) extending from the base (12). A separation column (20) includ...  
WO/1996/025998A1
Methods and apparatus for the concentration of microorganisms, particularly bacteria, from sample material, particularly from complex sample material and more particularly from foodstuff derived materials, comprise use of desalting means...  
WO/1996/016724A1
A buffer system for conducting discontinuous polyacrylamide gel electrophoresis comprises a separation gel buffer solution, an anodic electrode solution and a cathodic electrode solution. According to the invention, the separation gel bu...  
WO/1995/032864A1
A method of depositing material on a surface (136) is described in which a bulk medium (for example ink 122) in the form of a composition of dispersed insoluble material (for example ink particles) and a support medium is supplied to a c...  
WO/1995/032803A2
An electrically regeneratable electrochemical cell (30) for capacitive deionization and electrochemical purification and regeneration of electrodes includes two end plates (31, 32), one at each end of the cell (30). Two end electrodes (3...  
WO/1995/030782A1
Electrophoretic media and devices comprising said media are provided, wherein said media is capable of being reversibly converted in response to an applied stimulus from a first state of low viscosity to a second state of high viscosity,...  
WO/1995/014118A1
In accordance with the present invention, there is provided a method for the separation of biological materials, based on the discovery that a variety of polymeric materials are suitable for separation of biological materials, so long as...  
WO/1995/008529A1
Chiral surfactants, methods for their synthesis and use, and apparatus designed to facilitate chiral separations using micellar capillary electrophoresis is disclosed. A chiral surfactant having general formula (I) is described. R1 is th...  
WO/1994/029713A1
A capillary and capillary retaining system including a capillary assembly (20) having first and second end holders (32, 36). The first and second end holders (32, 36) are adapted to be received by first and second retainers (22, 24). The...  
WO/1994/028406A1
An apparatus for electroelution isolation of biomolecules and recovering biomolecules after elution including a tubular enclosure for engaging a piece of separating gel having a band of biomolecules. The enclosure is capped by a closure ...  
WO/1994/023290A1
A method for normalizing variabilities between chromatograms (electropherograms) of standard and sample chromatography (capillary electrophoresis) runs, where the detection method utilized results in a change in the detector output as a ...  
WO/1994/023023A1
A method for quantitative measurement of gene expression through multiplex competitive reverse transcriptase polymerase chain reaction amplification is established. This method is especially useful for analysis of small specimens of cell...  
WO/1994/022904A1
A method and apparatus for preparative electrophoresis useful in large scale recovery of macromolecules such as proteins. An electrophoretic potential with an initial polarity is applied across an electrophoretic medium (13) so as to ind...  
WO/1994/016821A1
Particles are subjected to travelling wave field migration (TWFM) to migrate the particles over an array of microelectrodes. Altered particles are produced by treating original particles in such a way so as to alter their TWFM characteri...  
WO/1994/017401A1
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 after IEF to effect solute mobilization. In a...  
WO/1994/014526A1
Multiple electrophoresis device and method for the migration and transfert of macromolecules in a vat (10) containing a plurality of parallel and elongate electrodes (14), membranes (22) arranged vertically in the vat between the columns...  
WO/1994/015209A1
A coated microcapillary column for high performance electrophoresis is disclosed. A preferred microcapillary includes a column; a universal sub-layer of coating material that has been highly cross-linked using a cross-linking agent and a...  
WO/1994/011728A1
The electrophoretic separator (10) comprises: an array of subcompartments (12) with two electrode compartments (30, 32) on either side of the array, each subcompartment has an inlet port (11) and a collection port (13); a buffer reservoi...  
WO/1994/010564A1
The present invention describes a device and a process for carrying out a multitude of parallel enzymatic of chemical reactions expected to yield different products whose functionality must be determined by simultaneous or successive ana...  
WO/1994/010561A1
Separation media for electrophoresis, and methods of filling and flushing of electrophoretic devices such as capillaries are described. By preparing submicron to above-micron sized cross-linked gel particles and using gel swelling equili...  
WO/1994/009134A2
Human ciliary neurotrophic factor is modified by amino acid substitution to give CNTF's of value in treating diseases or disorders of the nervous system. Recombinant DNA techniques for their production are described. Also described is a ...  
WO/1994/008701A1
Process for the manufacture of a microporous membrane gel plate, using a cartridge comprising a rectangular frame (10) and a detachable bottom plate, means for uniformly tensioning a membrane positioned on the frame (10), and means for s...  
WO/1994/003643A1
A method for electrophoresis of nucleic acid fragments present in the solution which contains an amount, e.g., 0.2 % or more, of a reagent, e.g., glycerol, dithiolthreitol (DTT) and trehalose or other sugars, which interact to form a com...  
WO/1993/025899A1
The present invention is directed to a technique that provides enhanced separation resolution in electrophoresis. This technique involves the use of a time-varying field strength, which may be progressively increasing or decreasing, cons...  
WO/1993/025896A1
A preparative electrophoresis device (10) having a pair of spaced apart plates (12, 14), a pre-cast electrophoretic gel (26, 28) between the plates, and a semipermeable membrane (30) sealably connected to ends of the plates to define wit...  
WO/1993/022665A1
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 polymer which is characterized by (A) a m...  

Matches 401 - 450 out of 1,661