Patents by Inventor Mikhail Sudakov
Mikhail Sudakov has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9997343Abstract: An electrostatic ion trap for mass analysis includes a first array of electrodes and a second array of electrodes, spaced from the first array of electrode. The first and second arrays of electrodes may be planar arrays formed by parallel strip electrodes or by concentric, circular or part-circular electrically conductive rings. The electrodes of the arrays are supplied with substantially the same pattern of voltage whereby the distribution of electrical potential in the space between the arrays is such as to reflect ions isochronously in a flight direction causing them to undergo periodic, oscillatory motion in the space, focused substantially mid-way between the arrays. Amplifier circuitry is used to detect image current having frequency components related to the mass-to-charge ratio of ions undergoing the periodic, oscillatory motion.Type: GrantFiled: June 9, 2017Date of Patent: June 12, 2018Assignee: SHIMADZU CORPORATIONInventors: Li Ding, Mikhail Sudakov, Sumio Kumashiro
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Publication number: 20170278689Abstract: An electrostatic ion trap for mass analysis includes a first array of electrodes and a second array of electrodes, spaced from the first array of electrode. The first and second arrays of electrodes may be planar arrays formed by parallel strip electrodes or by concentric, circular or part-circular electrically conductive rings. The electrodes of the arrays are supplied with substantially the same pattern of voltage whereby the distribution of electrical potential in the space between the arrays is such as to reflect ions isochronously in a flight direction causing them to undergo periodic, oscillatory motion in the space, focused substantially mid-way between the arrays. Amplifier circuitry is used to detect image current having frequency components related to the mass-to-charge ratio of ions undergoing the periodic, oscillatory motion.Type: ApplicationFiled: June 9, 2017Publication date: September 28, 2017Inventors: Li DING, Mikhail SUDAKOV, Sumio KUMASHIRO
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Patent number: 9691596Abstract: An electrostatic ion trap for mass analysis includes a first array of electrodes and a second array of electrodes, spaced from the first array of electrode. The first and second arrays of electrodes may be planar arrays formed by parallel strip electrodes or by concentric, circular or part-circular electrically conductive rings. The electrodes of the arrays are supplied with substantially the same pattern of voltage whereby the distribution of electrical potential in the space between the arrays is such as to reflect ions isochronously in a flight direction causing them to undergo periodic, oscillatory motion in the space, focused substantially mid-way between the arrays. Amplifier circuitry is used to detect image current having frequency components related to the mass-to-charge ratio of ions undergoing the periodic, oscillatory motion.Type: GrantFiled: October 7, 2015Date of Patent: June 27, 2017Assignee: SHIMADZU CORPORATIONInventors: Li Ding, Mikhail Sudakov, Sumio Kumashiro
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Publication number: 20160104609Abstract: An electrostatic ion trap for mass analysis includes a first array of electrodes and a second array of electrodes, spaced from the first array of electrode. The first and second arrays of electrodes may be planar arrays formed by parallel strip electrodes or by concentric, circular or part-circular electrically conductive rings. The electrodes of the arrays are supplied with substantially the same pattern of voltage whereby the distribution of electrical potential in the space between the arrays is such as to reflect ions isochronously in a flight direction causing them to undergo periodic, oscillatory motion in the space, focused substantially mid-way between the arrays. Amplifier circuitry is used to detect image current having frequency components related to the mass-to-charge ratio of ions undergoing the periodic, oscillatory motion.Type: ApplicationFiled: October 7, 2015Publication date: April 14, 2016Inventors: Li DING, Mikhail SUDAKOV, Sumio KUMASHIRO
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Patent number: 9159544Abstract: An electrostatic ion trap for mass analysis includes a first array of electrodes and a second array of electrodes, spaced from the first array of electrode. The first and second arrays of electrodes may be planar arrays formed by parallel strip electrodes or by concentric, circular or part-circular electrically conductive rings. The electrodes of the arrays are supplied with substantially the same pattern of voltage whereby the distribution of electrical potential in the space between the arrays is such as to reflect ions isochronously in a flight direction causing them to undergo periodic, oscillatory motion in the space, focused substantially mid-way between the arrays. Amplifier circuitry is used to detect image current having frequency components related to the mass-to-charge ratio of ions undergoing the periodic, oscillatory motion.Type: GrantFiled: September 28, 2011Date of Patent: October 13, 2015Assignee: SHIMADZU CORPORATIONInventors: Li Ding, Mikhail Sudakov, Sumio Kumashiro
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Publication number: 20140217275Abstract: An electrostatic ion trap for mass analysis includes a first array of electrodes and a second array of electrodes, spaced from the first array of electrode. The first and second arrays of electrodes may be planar arrays formed by parallel strip electrodes or by concentric, circular or part-circular electrically conductive rings. The electrodes of the arrays are supplied with substantially the same pattern of voltage whereby the distribution of electrical potential in the space between the arrays is such as to reflect ions isochronously in a flight direction causing them to undergo periodic, oscillatory motion in the space, focused substantially mid-way between the arrays. Amplifier circuitry is used to detect image current having frequency components related to the mass-to-charge ratio of ions undergoing the periodic, oscillatory motion.Type: ApplicationFiled: September 28, 2011Publication date: August 7, 2014Applicant: SHIMADZU CORPORATIONInventors: Li Ding, Mikhail Sudakov, Sumio Kumashiro
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Patent number: 8237111Abstract: A multi-reflecting ion optical device includes electrostatic field generating means configured to generate electrostatic field defined by a superposition of first and second distributions of electrostatic potential ?EF, ?LS. The first distribution ?EF subjects ions to energy focusing in a flight direction and the second distribution ?LS subjects ions to stability in one lateral direction, to stability in another lateral direction for the duration of at least a finite number of oscillations in the one lateral direction and to subject ions to energy focusing in the one lateral direction for a predetermined energy range.Type: GrantFiled: June 20, 2008Date of Patent: August 7, 2012Assignee: Shimadzu CorporationInventors: Uriy Golikov, Konstantin Solovyev, Mikhail Sudakov, Sumio Kumashiro
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Publication number: 20100193682Abstract: A multi-reflecting ion optical device includes electrostatic field generating means configured to generate electrostatic field defined by a superposition of first and second distributions of electrostatic potential ?EF, ?LS. The first distribution ?EF subjects ions to energy focusing in a flight direction and the second distribution ?LS subjects ions to stability in one lateral direction, to stability in another lateral direction for the duration of at least a finite number of oscillations in the one lateral direction and to subject ions to energy focusing in the one lateral direction for a predetermined energy range.Type: ApplicationFiled: June 20, 2008Publication date: August 5, 2010Applicant: SHIMADZU CORPORATIONInventors: Uriy Golikov, Konstantin Solovyev, Mikhail Sudakov, Sumio Kumashiro
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Patent number: 7045797Abstract: A mass spectrometer having an elongated rod set, and a method of operating same. The rod set has an entrance end, an exit end and a longitudinal axis. Ions are admitted into the entrance end of the rod set. At least some of the ions are trapped in the rod set by producing a barrier field at an exit member adjacent to the exit end of the rod set and by producing an RF field between the rods of the rod set adjacent at least the exit end of the rod set. The RF and barrier fields interact in an extraction region adjacent to the exit end of the rod set to produce a fringing field. Ions in the extraction region are energized to mass selectively eject at least some ions of a selected mass to charge ratio axially from the rod set past the barrier field. The RF field is a two-dimensional substantially quadrupole field having a quadrupole harmonic with amplitude A2, an octopole harmonic with amplitude A4, and a hexadecapole harmonic with amplitude A8. A8 is less than A4, and A4 is greater than 0.1% of A2.Type: GrantFiled: April 16, 2003Date of Patent: May 16, 2006Assignee: The University of British ColumbiaInventors: Mikhail Sudakov, Donald J. Douglas, Chuan-Fan Ding
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Publication number: 20040108456Abstract: A mass spectrometer having an elongated rod set, and a method of operating same. The rod set has an entrance end, an exit end and a longitudinal axis. Ions are admitted into the entrance end of the rod set. At least some of the ions are trapped in the rod set by producing a barrier field at an exit member adjacent to the exit end of the rod set and by producing an RF field between the rods of the rod set adjacent at least the exit end of the rod set. The RF and barrier fields interact in an extraction region adjacent to the exit end of the rod set to produce a fringing field. Ions in the extraction region are energized to mass selectively eject at least some ions of a selected mass to charge ratio axially from the rod set past the barrier field. The RF field is a two-dimensional substantially quadrupole field having a quadrupole harmonic with amplitude A2, an octopole harmonic with amplitude A4, and a hexadecapole harmonic with amplitude A8. A8 is less than A4, and A4 is greater than 0.1% of A2.Type: ApplicationFiled: April 16, 2003Publication date: June 10, 2004Applicant: University of British ColumbiaInventors: Mikhail Sudakov, Donald J. Douglas, Chuan-Fan Ding