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A resilient headband in a shape for being mounted on the head of the user. The headband is equipped with a longitudinal slotted member for holding a placard.

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Class 204/627 - Barrier separator (e.g., electrodialyzer, etc.)


Subclass of Class 204 - Chemistry: electrical and wave energy
Definition: Apparatus having a filter or membrane (e.g., electrodialyzer,
No. of patents: 101
Last issue date: 10/23/2007


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NumberTitleIssue Date
7285199Apparatus and method for electrophoretic microspot concentration
A method and apparatus for concentrating dilute biomolecules in samples using electrophoresis are described. The method involves using the charged nature of the biomolecules to localize them to a microspot containing a dialysis membrane. The method and apparatus may...
10/23/2007
7282128Buffers for electrophoresis and use thereof
Various embodiments provide, for example, buffer compositions and/or sieving formulations useful in connection with electrophoresis instruments, such as capillary electrophoresis (CE) devices. In various embodiments, a buffer composition can include Bis-Tris, TAPS a...
10/16/2007
7235164Electrokinetic pump having capacitive electrodes
An electrokinetic pump achieves high and low flow rates without producing significant gaseous byproducts and without significant evolution of the pump fluid. A first feature of the pump is that the electrodes in the pump are capacitive with a capacitance of at least...
06/26/2007
7208320Open-field serial to parallel converter
Microfluidic devices and systems for affecting the serial to parallel conversion of materials introduced into the device or system. Material or materials to be converted from a serial orientation, e.g., a single channel, into a parallel orientation, e.g., multiple c...
04/24/2007
7144487Factor VIII separation
The claims describe methods for isolating functionally active Factor VIII using a membrane-based separation system containing a separation membrane to create a first and second interstitial volume between at least two restriction membranes. One or more stabilizing a...
12/05/2006
RE39293Separation of plasma components
A method for separating components from plasma, the method comprising (I) separating the plasma into a first and second component, the first component comprising an albumin/α-1-antirypsin pool and the second component comprising plasma containing components having ...
09/19/2006
7108772Device and process for electrodialysis of ultrafiltration premeate of electrocoat paint
An electrodialysis cell (40) suitable for removal of paint solubilizer from electrocoat paint ultrafilter permeate includes a tubular, non-conductive housing (42), a substantially cylindrical, hollow object electrode (48) in the housing, a subst...
09/19/2006
7101468End box of an electrodialyser, electrodialyser comprising same and electrodialysis method
Electrodialysis device endbox comprising a vertical electrode (7) and a selectively ion-permeable membrane (10) which is arranged vertically, facing the electrode, and separated from the latter by a vertical passage (19) Electrodialysis d...
09/05/2006
7101519Zirconium basic carbonate and methods of making the same
Methods of making zirconium basic carbonate are further described which involve titrating an aqueous slurry of sodium zirconium carbonate to a pH of from about 3.5 to about 4.0 with an acidic agent wherein the sodium zirconium carbonate has a moisture content of fro...
09/05/2006
7077942Removal of biological contaminants
A method of removing a biological contaminant from a mixture containing a biomolecule and the biological contaminant, the method comprising: (a) placing the biomolecule and contaminant mixture in a first solvent stream, the first solvent stream being separated from ...
07/18/2006
7074313Processing chamber
A device having a processing chamber, for electroelution and/or dialysis of a substance carried in a sample with respect to an external liquid medium. The chamber has a closed end and an opening at the other end, sufficiently large to permit a sample, particularly a...
07/11/2006
7066900Removal of metabolic components from blood
An electrophoresis system for removing or reducing concentration of a metabolic component from blood or plasma of a subject is provided. A method for removing or reducing concentration or amount of a metabolic component in blood or plasma of a subject is also provid...
06/27/2006
7060173Removal of biological contaminants
A method of removing a biological contaminant from a mixture containing a biomolecule and the biological contaminant, the method comprising: (a) placing the biomolecule and contaminant mixture in a first solvent stream, the first solvent stream being separated from ...
06/13/2006
7033498Cartridges useful in cleaning dialysis solutions
Cartridges useful in regenerating or purifying dialysis solutions are described as well as methods to regenerate or purify spent dialysis solutions. Dialysis systems using the sorbent cartridges of the present invention are further described. ...
04/25/2006
7029563EDI device with composite electrode
An EDI device includes a composite electrode enclosed within the cylinder shell of the device. The EDI inner module preferably has one concentrate center pipe as the electrode in the center axis and at least one layer of anion/cation exchange membranes and a support...
04/18/2006
6974528High performance wide bore electrophoresis
Methods, apparatus and systems are provided for efficient separation of various small and large molecules, especially biomolecules such as proteins, nucleic acids and polysaccharides. In particular, an electrophoresis apparatus is employed in a wide bore electrophor...
12/13/2005
6969453Small separation apparatus
An electrophoresis apparatus for processing compounds in small sample volumes comprising a cathode in a static cathode buffer zone or compartment, an anode in a static anode buffer zone or compartment. The cathode disposed relative to the anode so as to be adapted t...
11/29/2005
6919006Apparatus for macromolecule purification
An electrophoresis apparatus, comprises a cartridge configured to be removably mounted in the apparatus, and a separation membrane positioned in the cartridge. The separation membrane has a first side along which a first flow path defined in a first grid element and...
07/19/2005
6855121Blood-related dialysis and treatment
A method of treating blood or plasma of a subject to remove metabolic contaminants by electrophoresis. Blood or plasma from the subject is placed in a first solvent stream, the first solvent stream being separated form a second solvent stream by an electrophoretic m...
02/15/2005
6824740Apparatus for active biological sample preparation
Systems and methods for the electronic sample preparation of biological materials utilize the differential charge-to-mass ratio and/or the differential affinity of sample constituents to separation materials for sample preparation. An integrated system is provided f...
11/30/2004
6746594Miniature support for thin films containing single channels or nanopores and methods for using the same
Single-channel thin film devices and methods for using the same are provided. The subject devices comprise cis and trans chambers connected by an electrical communication means. At the cis end of the electrical communication means is a horizontal conical aperture se...
06/08/2004
6685809Methods for forming small-volume electrical contacts and material manipulations with fluidic microchannels
A microfabricated device employing a bridging membrane and methods for electrokinetic transport of a liquid phase biological or chemical material using the same are described. The bridging membrane is deployed in or adjacent to a microchannel and permits ...
02/03/2004
6660150Separation of micromolecules
An apparatus and method for the separation of molecules having a molecular mass from about 200 to 5000 Da, particularly micromolecules having a molecular mass of less than 5000 Dalton. The apparatus contains an anode, a cathode disposed between the anode a...
12/09/2003
6638408Method and device for separation of charged molecules by solution isoelectric focusing
The invention provides a novel solution isoelectric focusing device and method that can reproducibly fractionate charged molecules into well-defined pools. This approach can be applied to mixtures of charged molecules, such as eukaryotic proteome samples ...
10/28/2003
6569301Cation exchange membrane selectively permeable to monovalent cations and method for its production
The present invention provides a cation exchange membrane which has excellent durability, a high limiting current density, a low direct current membrane resistance and excellent selectivity to monovalent cations. In the present invention, a cation exchang...
05/27/2003
6485624Method and device for capacitative demineralization of liquids which contain ions
The invention relates to a process and apparatus for the capacitive demineralization of liquids containing ions in which, after introducing the liquid into a container, an electric field is applied to capacitor plates (8, 9), which leads to ions of the li...
11/26/2002
6328869Apparatus for macromolecule purification
An electrophoresis apparatus, comprises a cartridge configured to be removably mounted in the apparatus, and a separation membrane positioned in the cartridge. The separation membrane has a first side along which a first flow path defined in a first grid ...
12/11/2001
6284115In-line flow through micro-dialysis apparatus and method for high performance liquid phase separations
Apparatus for in-line flow-through sample treatment includes a sample channel that has a sample inlet and a sample outlet and is defined in part by inner surfaces of walls of a solid material and in part by an inner surface of a first membrane, and a firs...
09/04/2001
6267872Miniature support for thin films containing single channels or nanopores and methods for using same
Single-channel thin film devices and methods for using the same are provided. The subject devices comprise cis and trans chambers connected by an electrical communication means. At the cis end of the electrical communication means is a horizontal conical ...
07/31/2001
6241866Electrodeionization apparatus with fixed ion exchange materials
Electrodeionization apparatus for purifying water that includes a cathode, an anode, and a plurality of alternating anion permeable membranes and cation permeable membranes between the cathode and anode that define concentrating and diluting flow channels...
06/05/2001
6129828Apparatus and methods for active biological sample preparation
Systems and methods for the electronic sample preparation of biological materials utilize the differential charge-to-mass ratio and/or the differential affinity of sample constituents to separation materials for sample preparation. An integrated system is...
10/10/2000
6117297Electrodialysis apparatus
An integral, monolithic frame-membrane is disclosed, such frame-membrane having a semi-permeable membrane portion and integral therewith a frame portion, the frame portion having one or more cavities, each cavity juxtaposed to the membrane portion, each c...
09/12/2000
6074537Equipment for electochemical collection removal of ions
A method and apparatus concentrates, collects and removes heavy metals, other cations, and anions from media permitting generation of electrical fields. The heavy metals and other cations are electrochemically concentrated and precipitated for rapid remov...
06/13/2000
6071404Water treating device
A water treating device includes an outer casing, a reverse osmosis tube, a side cap, and an outlet tube. The outer casing includes an outer tube having a first inlet for water and a first outlet, an inner tube mounted inside the outer tube and including ...
06/06/2000
6045675Method for concentrating aqueous tetrafluoroethylene emulsion by electrodialysis and its apparatus
The present invention relates to a method and an apparatus for concentrating an aqueous PTFE emulsion in which a raw, aqueous PTFE emulsion containing fluorinated surfactants is concentrated by an electrodialysis technique using at least one nonionic surf...
04/04/2000
6030535Method of and apparatus for producing potable water and salt
Original seawater is supplied to a pre-treatment equipment, and a flocculated material produced by exerting a magnetic force and injecting ozone is removed by filtration. The seawater pretreated by the pre-treatment equipment is supplied to a reverse osmo...
02/29/2000
5906724Apparatus for separation of nucleated blood cells from a blood sample
A charge-flow separation apparatus (CFS) for enriching rare cell populations, particularly fetal cells, from a whole blood sample by separating the rare cell fractions from whole fractions according to the relative-charge density and/or the relative bindi...
05/25/1999
5891328Membrane-frame for processes including electrodialysis
An integral, monolithic frame-membrane is disclosed, such frame-membrane having a semi-permeable membrane portion and integral therewith a frame portion, the frame portion having one or more cavities, each cavity juxtaposed to the membrane portion, each c...
04/06/1999
5776325Ion transport apparatus and process
The invention relates to a method and apparatus for inducing the mono-directional transport of ions across a conducting polymer membrane which separates electrolyte solutions, by creating a potential gradient across the conducting polymer membrane....
07/07/1998
5766438Electrolyzer and a method of operating the same
In an electrolyzer provided according to this invention, the polarity of electrodes is periodically inverted at very short intervals. This has the effect of allowing gases to be generated uniformly all over the surface of each electrode in the form of ext...
06/16/1998
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