Patents by Inventor Sumio Kumashiro
Sumio Kumashiro 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: 8704170Abstract: The current invention involves a method and a device for generating and analyzing ions in order to analyze samples directly without sample preparation. The gaseous neutral molecules are desorbed under atmospheric pressure by a desorption method. The desorbed neutral molecules are then transferred into a low pressure region where they are post-ionized by a mist from an electrospray probe tip or by photons from a vacuum UV source. The generated ions are then focused in a time varying electric field in the low pressure chamber before they are transferred into a mass spectrometer or ion mobility spectrometer for further analysis.Type: GrantFiled: April 22, 2011Date of Patent: April 22, 2014Assignee: Shimadzu Research Laboratory (Shanghai) Co. Ltd.Inventors: Sumio Kumashiro, Wenjian Sun, Li Ding
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Publication number: 20130026359Abstract: The current invention involves a method and a device for generating and analyzing ions in order to analyze samples directly without sample preparation. The gaseous neutral molecules are desorbed under atmospheric pressure by a desorption method. The desorbed neutral molecules are then transferred into a low pressure region where they are post-ionized by a mist from an electrospray probe tip or by photons from a vacuum UV source. The generated ions are then focused in a time varying electric field in the low pressure chamber before they are transferred into a mass spectrometer or ion mobility spectrometer for further analysis.Type: ApplicationFiled: April 22, 2011Publication date: January 31, 2013Applicant: SHIMADZU RESEARCH LABORATORY (SHANGHAI) CO., LTD.Inventors: Sumio Kumashiro, Wenjian Sun, Li Ding
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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: 5166521Abstract: An ion source, a first control electrode for controlling an ion beam emitted by the ion source, a detector for detecting scattered particles, and a second control electrode for controlling the ion beam, which is directed from the ion source toward a sample, as well as the scattered particles, are arranged on the same axis along with the sample. The ion beam directed from the ion source toward the sample, and the scattered particles, which are scattered from the sample and are directed toward the detector, are caused to converge. By using an Einzel-type lens as the second control electrode, charged particles and neutral particles constituting the scattered particles are provided with a difference in speed. The detector possesses an anode plate which is divided into the form of concentric, circular plates or concentric arc-shaped plates, and each divided anode plate provides a detection output which contains information relating to a distribution of the scattering angles of the scattered ions.Type: GrantFiled: November 20, 1991Date of Patent: November 24, 1992Assignees: Shimadzu Corporation, Rikagaku KenkyuusyoInventors: Shigeki Hayashi, Sumio Kumashiro, Masakazu Aono, Mitsuhiro Katayama