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Dionex Corporation patents

Recent patent applications related to Dionex Corporation. Dionex Corporation is listed as an Agent/Assignee. Note: Dionex Corporation may have other listings under different names/spellings. We're not affiliated with Dionex Corporation, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "D" | Dionex Corporation-related inventors

Electrolytic buffer generator

Buffer generators are described based on electrodialytic devices. The methods of using these devices can generate buffers for diverse applications, including separations, e.g., hplc and ion chromatography. ... Dionex Corporation

Method for adjusting a gradient delay volume

The invention relates to a method for setting a gradient delay volume gdv of a liquid chromatography system for a chromatography run in liquid chromatography, in particular a high-performance liquid chromatography system, in which a desired value gdvtarget of a gradient delay volume of the liquid chromatography system is ascertained or predefined and, if the value gdvtarget deviates from a specific fixed value gdvactual of a liquid chromatography system, this value gdvtarget is set in a range 0≤Δgdv=gdvtarget−gdvactual≤vmax of a volume of a volume adjustment device 5. Furthermore, the invention relates to an automatic sampler for carrying out such a method.. ... Dionex Corporation

Electrolytic reagent concentrator for ion chromatography

An in-line electrolytic reagent concentrator device that circumvents the need for additional pumps and supplies of reagents to support operation of a carbonate or ammonia removal device. The device generates regenerant solutions as strong as, or even stronger, than commercially recommended regenerant solutions. ... Dionex Corporation

Electrolytic four-channel device and method

An electrolytic device includes four channels separated by three charged barriers. The device can be used to suppress an eluent stream containing separated sample analyte ions and/or to pretreat a sample stream containing unseparated analyte ions.. ... Dionex Corporation

Method of measuring an analyte with a reductive detection waveform

An analyte concentration can be measured at an electrochemical detector using a waveform that includes a reductive voltage. The waveform may include three or four different voltages, in which at least one of the voltage values is reductive. ... Dionex Corporation

Base to switch an apparatus between slidable and non-slidable states

An apparatus includes a base to switch the apparatus between slidable and non-slidable states, for example a laboratory analysis device, wherein the base is adapted to be located on a flat surface, the base comprising a bottom section adapted to contact the flat surface when the base is located on the flat surface, a movable section that is adapted to assume a retracted position and an extended position, wherein, in the retracted position, the movable section does not contact the flat surface when the base is located on the flat surface, and, in the extended position, the movable section contacts the flat surface when the base is located on the flat surface.. . ... Dionex Corporation

Systems, methods and devices for width-based analysis of peak traces

Systems, methods and devices are taught for providing analytical methods for peak-shaped responses separated in time or space, including quantitation of chromatographic peaks based on a width measurement of a peak trace at a selected height as a quantitation element. Methods of treating a peak trace as a composition of exponential functions representing a leading and a trailing end are included. ... Dionex Corporation

Method and device for sample loading

A liquid chromatography system includes a separation column, a trap column, and a first switching valve. The first switching valve is adapted to assume a first switching position for bringing a sample into the trap column in a first flow direction. ... Dionex Corporation

Liquid chromatography system, method and use

A method performed in a liquid chromatography system that includes a metering device pushing a sample into a trap column. The metering device sucks in the sample from a sample reservoir, wherein the sucking in the sample from a sample reservoir precedes the step of pushing the sample into the trap column. ... Dionex Corporation

System and method for component interconnection in hplc

A system for component interconnection for use in liquid chromatography includes a first switching valve and a second switching valve. A first connecting line fluidly connects the first switching valve to the second switching valve. ... Dionex Corporation

Method of introducing a sample into a separation column and corresponding system

A method of introducing a sample into a separation column includes introducing the sample into a trap column, isolating the trap column from ambient atmosphere and pressurizing the trap column to a first pressure while the trap column is isolated from ambient atmosphere, providing a fluid connection between the trap column and the separation column after pressurizing the trap column to the first pressure, supplying the sample from the trap column to the separation column.. . ... Dionex Corporation

Nebulizer for charged aerosol detection (cad) system

A nebulizer for a charged aerosol detection (cad) system is disclosed. The nebulizer is provided with a spray emitter for generating a spray of droplets within a central region of a spray chamber. ... Dionex Corporation

Functionalized polyolefin capillaries for open tubular ion chromatography

Open tubular capillary columns for liquid and ion chromatography, based upon an ionically impermeable polyolefin capillary having a bore with a sulfonate-group- or amine-group-functionalized internal surface. The capillary columns may include a coating of ion exchanging nanoparticles electrostatically bound to the functionalized internal surface. ... Dionex Corporation

Automated method of calibrating a chromatography system and analysis of a sample

An automated method of calibrating a chromatography system and analyzing a sample is described. The method includes forming diluted standard solutions that are injected into a chromatography column. ... Dionex Corporation

01/18/18 / #20180017534

Replaceable emitter assembly for interfacing a separation column to a mass spectrometer

An electrospray emitter assembly for interfacing a separation column to a mass spectrometer is disclosed. An emitter capillary includes an inlet end and an outlet end. ... Dionex Corporation

01/11/18 / #20180008959

Chromatographic material having improved ph stability, method for preparation thereof and uses thereof

A chromatographic material including a substrate having a surface and having a polymeric layer covalently bound to the surface; the polymeric layer comprising polymer molecules covalently attached to the surface of the substrate, each polymer molecule being attached to the surface via multiple siloxane bonds and each polymer molecule being connected to one or more functionalizing compounds that each comprise a functional group, wherein the polymeric layer is formed by covalently attaching polymer molecules to the surface of the substrate via multiple siloxane bonds, each polymer molecule containing multiple first reactive groups, and reacting the first reactive groups of the attached polymer molecules with at least one functionalizing compound that comprises a second reactive group that is reactive with the first reactive groups and that further comprises a functional group. Preferred conditions of reacting the polymer with the substrate include elevated temperature and reduced pressure.. ... Dionex Corporation

12/21/17 / #20170363592

Charge reversible ion exchange resins, chromatography column, method, and system thereof

An ion exchange chromatographic packing material is described that includes a copolymer grafted to support resin particles. The copolymer includes an ion exchange group, an ionic crosslinking group configured to ionically bind to the ion exchange group, and an adjustable ionization state group having at least a first net charge at the first ph and a second net charge at the second ph. ... Dionex Corporation

12/14/17 / #20170356575

Capillary connection system

A socket unit for a capillary connection system, especially for use in hplc applications, includes a housing with a housing outer surface and a housing inner surface that define a housing axial cavity. The socket unit also includes a socket connecting mechanism adapted to engage with a corresponding plug connecting mechanism of a plug unit to connect the plug unit and the socket unit together, wherein the socket connecting mechanism is adapted for a predetermined number of discrete connection states between the socket unit and the plug unit.. ... Dionex Corporation

10/05/17 / #20170284980

High-pressure control valve for high-performance liquid chromatography

A high-pressure switching valve includes a stator and a rotor. The stator includes a plurality of ports where each port is connected at one end to a port connection and having at another end a predetermined port opening cross section at a stator end face of the stator. ... Dionex Corporation

08/31/17 / #20170248557

Methods for injecting samples in liquid chromatography, particularly in high performance liquid chromatography

A sample injection method for liquid chromatography is performed with an injection valve having a waste port, two sample loop ports, and two high-pressure ports. One high-pressure port can be connected to a pump and the other high-pressure port can be connected to a chromatography column. ... Dionex Corporation

08/17/17 / #20170234782

Analyte concentrator system and methods of use

Systems and methods for concentrating an analyte preparatory to analysis thereof include processing the effluent of an analyte concentrator to produce an eluent for eluting an analyte retained in the same or separate concentrator, and systems implementing the same. The analyte concentrator system connects the effluent outlet of an analyte concentrator column to an eluent generation module such that the substantially analyte-free effluent discharged from the analyte concentrator column passes fluidly into the eluent generation module. ... Dionex Corporation

08/03/17 / #20170219539

Sample pre-compression valve for liquid chromatography

A sample pre-compression valve for liquid chromatography applications is described. The valve enables a sample pre-compression while the solvent pump continues to conduct solvent to the chromatography column. ... Dionex Corporation

06/08/17 / #20170160244

Multi-lumen mixing device for chromatography

A multi-lumen mixing device is described. The multi-lumen mixing device includes a mixer body having an inlet portion and an outlet portion. ... Dionex Corporation

05/18/17 / #20170136465

Ion exchange foams to remove ions from samples

A method of making an ion exchange foam is described. The method includes forming an aqueous phase by suspending an ion exchange resin in an aqueous solvent. ... Dionex Corporation

05/11/17 / #20170130345

Three-electrode buffer generator and method

An electrodialytic buffer generator is described. The buffer generator may include a central buffer-generating channel having an inlet and outlet, a second chamber, and a third chamber. ... Dionex Corporation

05/04/17 / #20170122918

Capillary tube connection

A plug for connecting capillaries includes at least one capillary tube, at least one sealing, and at least one pressure piece. The capillary tube includes a first inner diameter and an open end section. ... Dionex Corporation

03/02/17 / #20170059534

Systems and apparatus for reducing signal noise due to pump oscillations

A system reduces unwanted noise due to pump movement. The system includes a pump including a non-conductive piston extending into a pumping chamber for pumping the sample fluid along an analysis fluid path, a wash chamber, and a seal fluidly separating the pumping chamber from the wash chamber. ... Dionex Corporation

02/09/17 / #20170038352

Process for transfer of a method from a starting system to a target system in liquid chromatography

A process for transferring a method from a starting system to a target system in liquid chromatography, in particular in high performance liquid chromatography, is described. A first chromatogram of the method carried out on the starting system is available or determined. ... Dionex Corporation

02/02/17 / #20170028394

Ion-exchange composition comprising a complex of support particles, dispersant, and electrostatically bound layering particles

An ion-exchange composition suitable for use in ion exchange chromatography, comprising neutral vinyl polymer support particles irreversibly bound to a dispersant having ionizable sites which are un-ionized at a neutral ph and which are ionized under highly acidic or highly basic conditions, and fine layering particles functionalized with ion-exchanging sites on the surfaces thereof. A portion of the ionizable sites are ionized and bound electrostatically to a portion of the fine layering particles ion-exchanging sites, producing a support particle-dispersant-fine layering particle complex.. ... Dionex Corporation

01/05/17 / #20170003255

Plug unit and connection system for connecting capillary tubes, especially for high-performance liquid chromatography

A plug unit for connecting capillary tubes includes a plug housing that has an axial borehole, a plug capillary tube that projects through the axial borehole, and a sealing element that surrounds the plug capillary tube. The front end of the plug capillary tube is sealed by an elastic and/or plastic deformation of the sealing element against the capillary tube receptacle opening of a bushing unit. ... Dionex Corporation

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