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公开(公告)号：US10910207B2
公开(公告)日：2021-02-02
申请号：US16568987
申请日：2019-09-12
Applicant: Smiths Detection-Watford Limited
Inventor： Jonathan Atkinson , Alastair Clark , Bruce Grant
Abstract: An ion mobility spectrometer comprising an ioniser for ionising a sample; a detector separated from the ioniser by a drift chamber along which ions can travel from the ioniser toward the detector; a gate for controlling the passage of ions from the ioniser to the drift chamber; an ion modifier arranged between the ioniser and the detector and comprising a first electrode and a second electrode; and a voltage provider configured to provide a time varying voltage between the first electrode and the second electrode wherein the time varying voltage has a frequency of at least 2.5 MHz.
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公开(公告)号：US10775283B2
公开(公告)日：2020-09-15
申请号：US16189192
申请日：2018-11-13
Applicant: SMITHS DETECTION-WATFORD LIMITED
Inventor： Alexander Parker , Marcedl Gowers , Jonathan Atkinson , John Fitzgerald
Abstract: An on-demand vapour generator includes a vapour chamber configured to produce a vapour and a vapour absorption assembly configured to receive flows of vapour from the vapour chamber. The vapour absorption assembly includes a first vapour-permeable passage having a passage outlet and at least one second vapour-permeable passage that is closed. When vapour absorption assembly receives a flow of vapour from the vapour chamber, the flow of vapour passes through the first vapour-permeable passage to the passage outlet at least substantially without absorption of vapour from the flow of vapour. However, when a flow of vapour is not received from the vapour chamber, vapour entering the vapour absorption assembly from the vapour chamber passes into the first vapour-permeable passage and the at least one second vapour-permeable passage and is at least substantially absorbed.
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公开(公告)号：US20170322126A1
公开(公告)日：2017-11-09
申请号：US15609343
申请日：2017-05-31
Applicant: Smiths Detection-Watford Limited
Inventor： Alexander Parker , Marcel Gowers , Jonathan Atkinson , John Fitzgerald , Stephen Taylor
CPC classification number: B01B1/005 , B01D53/229 , B01L3/0289 , F22B3/02 , G01N1/38 , G01N27/622
Abstract: An on-demand vapour generator includes a vapour chamber configured to produce a vapour and a vapour absorption assembly configured to receive flows of vapour from the vapour chamber. The vapour absorption assembly includes a first vapour-permeable passage having a passage outlet and at least one second vapour-permeable passage that is closed. When vapour absorption assembly receives a flow of vapour front the vapour chamber, the flow of vapour passes through the first vapour-permeable passage to the passage outlet at least substantially without absorption of vapour from the flow of vapour. However, when a flow of vapour is not received from the vapour chamber, vapour entering the vapour absorption assembly from the vapour chamber passes into the first vapour-permeable passage and the at least one second vapour-permeable passage and is at least substantially absorbed.
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公开(公告)号：US20170241951A1
公开(公告)日：2017-08-24
申请号：US15518574
申请日：2015-10-14
Applicant: Smiths Detection-Watford Limited
Inventor： Alastair Clark , Jonathan Atkinson
Abstract: An ion filter for a mass spectrometer, the apparatus comprising an ion modifier; an ion selector configured to select a subset of a sample of ions based on their mobility in a gas; and a controller configured to operate the ion modifier in a first mode to modify the ions selected by the ion selector to provide daughter ions, and configured to operate the ion modifier in a second mode to output the ions selected by the ion selector; wherein the ion filter is adapted for providing output ions from the ion modifier to an intake of a mass spectrometer.
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公开(公告)号：US20200173961A1
公开(公告)日：2020-06-04
申请号：US16786217
申请日：2020-02-10
Applicant: SMITHS DETECTION-WATFORD LIMITED
Inventor： Alastair Clark , Jonathan Atkinson
Abstract: An ion filter for a mass spectrometer, the apparatus compr sing an ion inodifier; an ion selector configured to select a subset of a sample of ions based on their mobility in a gas; and a controller configured to operate the ion modifier in a first mode to modify the ions selected by the ion selector to provide daughter ions, and configured to operate the ion modifier in a second mode to Coutput the ions selected by the ion selector;wherein the ion filter is adapted for providing output ions from the ion modifier to an in-take of a mass spectrometer.
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Patent Agency Ranking
公开(公告)号：US20200083033A1
公开(公告)日：2020-03-12
申请号：US16568987
申请日：2019-09-12
Applicant: Smiths Detection-Watford Limited
Inventor： Jonathan Atkinson , Alastair Clark , Bruce Grant
Abstract: An ion mobility spectrometer comprising an ioniser for ionising a sample; a detector separated from the ioniser by a drift chamber along which ions can travel from the ioniser toward the detector; a gate for controlling the passage of ions from the ioniser to the drift chamber; an ion modifier arranged between the ioniser and the detector and comprising a first electrode and a second electrode; and a voltage provider configured to provide a time varying voltage between the first electrode and the second electrode wherein the time varying voltage has a frequency of at least 2.5 MHz.
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公开(公告)号：US10557823B2
公开(公告)日：2020-02-11
申请号：US15518574
申请日：2015-10-14
Applicant: Smiths Detection-Watford Limited
Inventor： Alastair Clark , Jonathan Atkinson
Abstract: An ion filter for a mass spectrometer, the apparatus comprising an ion modifier; an ion selector configured to select a subset of a sample of ions based on their mobility in a gas; and a controller configured to operate the ion modifier in a first mode to modify the ions selected by the ion selector to provide daughter ions, and configured to operate the ion modifier in a second mode to output the ions selected by the ion selector; wherein the ion filter is adapted for providing output ions from the ion modifier to an intake of a mass spectrometer.
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公开(公告)号：US20180277349A1
公开(公告)日：2018-09-27
申请号：US15922377
申请日：2018-03-15
Applicant: Smiths Detection-Watford Limited
Inventor： Stephen Taylor , Jonathan Atkinson
CPC classification number: H01J49/145 , G01N27/622 , H01J49/0009 , H01J49/0031 , H01J49/0072 , H01J49/10
Abstract: An ionising apparatus for ionising a sample of gaseous fluid. The ionising apparatus comprises an ioniser configured to provide reactant ions; an ion modifier configured to modify the reactant ions, and a reaction region arranged to receive the modified reactant ions and a sample and to combine the sample with the modified reactant ions to ionise the sample for analysis by a detector configured to identify a substance of interest in the sample.
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公开(公告)号：US20170241952A1
公开(公告)日：2017-08-24
申请号：US15518583
申请日：2015-10-14
Applicant: Smiths Detection-Watford Limited
Inventor： Jonathan Atkinson , Alastair Clark
CPC classification number: G01N27/622 , H01J49/0422 , H01J49/0495
Abstract: Ion modification An ion mobility spectrometer (100) comprising a sample inlet (108) comprising an aperture arranged to allow a sample of gaseous fluid to flow from an ambient pressure region to a low pressure region of the ion mobility spectrometer to be ionised; a controller (200) arranged to control gas pressure in the low pressure region to be lower than ambient pressure; and an ion modifier (126, 127, 202) configured to modify ions in the low pressure region, wherein the ions are obtained from the sample of gas.
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公开(公告)号：US10607827B2
公开(公告)日：2020-03-31
申请号：US15922377
申请日：2018-03-15
Applicant: Smiths Detection-Watford Limited
Inventor： Stephen Taylor , Jonathan Atkinson
Abstract: An ionising apparatus for ionising a sample of gaseous fluid. The ionising apparatus comprises an ioniser configured to provide reactant ions; an ion modifier configured to modify the reactant ions, and a reaction region arranged to receive the modified reactant ions and a sample and to combine the sample with the modified reactant ions to ionise the sample for analysis by a detector configured to identify a substance of interest in the sample.
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