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公开(公告)号：US11090606B2
公开(公告)日：2021-08-17
申请号：US14097638
申请日：2013-12-05
申请人： DIONEX CORPORATION
发明人： Kannan Srinivasan , Sheetal Bhardwaj , Rong Lin
摘要： An electrolytic device, e.g. a suppressor, including at least two flow-through channels separated by a charged membrane barrier, and a catalyst, for combining hydrogen and oxygen gas, together with ion exchange material, disposed in one of the channels. Also, a method for simultaneous electrolysis and catalytic gas elimination in a channel of the device is described.
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公开(公告)号：US10948466B2
公开(公告)日：2021-03-16
申请号：US15449868
申请日：2017-03-03
申请人： DIONEX CORPORATION
摘要： 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. The device may also regenerate eluent solutions so as to reduce the frequency of eluent maintenance and replacement in ion chromatography systems.
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公开(公告)号：US10746639B2
公开(公告)日：2020-08-18
申请号：US15232934
申请日：2016-08-10
申请人： DIONEX CORPORATION
发明人： Kannan Srinivasan , SM Rahmat Ullah
摘要： A method of extracting an analyte from a sample is described. The sample is added to a sample container. A liquid solvent and a gas are added into the sample container. The addition of the gas is controlled to establish an elevated pressure within the sample container. The liquid solvent is heated to an elevated temperature that is below the boiling temperature of the liquid solvent at the elevated pressure. A type of gas is used that does not transition to a supercritical fluid at the elevated temperature and pressure used in the extraction process. The analyte can dissolve from the solid sample into the liquid solvent. Next, at least a portion of the liquid solvent containing the dissolved analyte can be removed from the sample container for subsequent analysis.
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公开(公告)号：US10175211B2
公开(公告)日：2019-01-08
申请号：US14587780
申请日：2014-12-31
申请人： DIONEX CORPORATION
IPC分类号： G01N30/96 , B01D15/08 , B01D15/36 , B01D61/46 , B01D61/52 , B01J39/26 , B01J41/20 , B01J47/04 , B01J20/281 , G01N30/00 , G01N30/02
摘要： An apparatus for treating an aqueous sample stream includes analyte ions. The apparatus comprises an ion exchange barrier; a sample stream flow channel; an ion receiving stream flow channel adjacent to the sample stream flow channel and separated therefrom by said first ion exchange bather. Stationary flow-through ion exchange packing is disposed in the sample flow channel of the same charge as the ion exchange bather. The ion exchange packing comprises a mixture of a first ion exchange portion with strong ionizable groups and a second ion exchange portion with weak ionizable groups of the same charge. First and second electrodes are in electrical communication with the sample stream flow channel and ion receiving flow channel.
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公开(公告)号：US12130269B2
公开(公告)日：2024-10-29
申请号：US17459757
申请日：2021-08-27
申请人： DIONEX CORPORATION
CPC分类号： G01N30/96 , B01D15/362 , B01D15/367 , G01N2030/285
摘要： Systems and methods for inhibiting translocation of ions across ion exchange barriers include an eluent generator having an ion source reservoir with a first electrode, an eluent generation chamber with a second electrode, an ion exchange barrier disposed therebetween, and means for reversing the polarity of a voltage or current applied across the first and second electrodes. A first polarity voltage or current applied across the electrodes generates an electric field that promotes translocation of eluent counter ions from the reservoir across the barrier, where the counter ions combine with eluent ions electrolytically generated in the chamber. By reversing the polarity of the voltage or current across the electrodes, the resulting electric field inhibits translocation of counter ions across the barrier from the reservoir into the chamber. Reverse voltage or current bias reduces counter ion concentration in the resting chamber to prevent exhaustion of ion suppressor capacity during start up.
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公开(公告)号：US11977046B2
公开(公告)日：2024-05-07
申请号：US17562237
申请日：2021-12-27
IPC分类号： G01N27/30
CPC分类号： G01N27/30
摘要： An electrochemical cell comprises a chamber, an inlet port, an outlet port, an electrode port, and a counter electrode. The inlet port is configured to allow flow of a liquid into the chamber and through an inlet opening toward the working electrode, and the outlet port is configured to allow flow of a liquid out of the chamber and through an outlet opening. The device is configured so that a force applied to the working electrode slides the first end face of the working electrode to a distance from a face of the inlet opening due to the balancing force of a fluid flowing out of the inlet opening. The device may be used in a method for analyzing an analyte, such as one or more amino acids in a liquid sample.
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公开(公告)号：US11684877B2
公开(公告)日：2023-06-27
申请号：US17038672
申请日：2020-09-30
申请人： DIONEX CORPORATION
发明人： Weichiat Chen , Kannan Srinivasan
CPC分类号： B01D29/96 , B01D46/2414 , B01D2201/0415 , B01D2201/291 , B01D2201/34 , B01D2271/027
摘要： An extraction cell cap assembly allows for toolless disassembly. The assembly includes a cap body having a threaded base releasably engaged with a cell vessel, a support member extending axially upward from the base, and a bore axially extending through the support member. The assembly also includes a locking cap having a plunger slidably received within the bore, a recess disposed within the plunger, and a locking portion that releasably engages the support member. Rotation of the locking cap in a first direction engages the locking portion with the support member, and rotation in an opposite direction disengages the locking portion. A filter is received in the recess and a seal member received in the bore, wherein the seal member forms a fluid-tight seal between the cell vessel and the assembly when the locking portion and the support member are engaged and the assembly is secured to the cell vessel.
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公开(公告)号：US20220096972A1
公开(公告)日：2022-03-31
申请号：US17038672
申请日：2020-09-30
申请人： DIONEX CORPORATION
发明人： Weichiat Chen , Kannan Srinivasan
摘要： An extraction cell cap assembly allows for toolless disassembly. The assembly includes a cap body having a threaded base releasably engaged with a cell vessel, a support member extending axially upward from the base, and a bore axially extending through the support member. The assembly also includes a locking cap having a plunger slidably received within the bore, a recess disposed within the plunger, and a locking portion that releasably engages the support member. Rotation of the locking cap in a first direction engages the locking portion with the support member, and rotation in an opposite direction disengages the locking portion. A filter is received in the recess and a seal member received in the bore, wherein the seal member forms a fluid-tight seal between the cell vessel and the assembly when the locking portion and the support member are engaged and the assembly is secured to the cell vessel.
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公开(公告)号：USD840255S1
公开(公告)日：2019-02-12
申请号：US29599171
申请日：2017-03-31
申请人： DIONEX CORPORATION
设计人： Kannan Srinivasan , Glenn M. Kuse
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公开(公告)号：US09964510B2
公开(公告)日：2018-05-08
申请号：US14028064
申请日：2013-09-16
申请人： DIONEX CORPORATION
发明人： Kannan Srinivasan , Sheetal Bhardwaj , Rong Lin
CPC分类号： G01N27/333 , B01D61/46 , B01D61/50 , B01J47/12 , G01N30/96
摘要： 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.
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