Patents by Inventor Shigenobu NAKANO
Shigenobu NAKANO 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: 11262313Abstract: A sulfur chemiluminescence detector 200 includes: a heating furnace including a gas passage having first and second supply ports, and a heater configured to heat the gas passage; an oxidation-reduction gas supply unit configured to supply, to the gas passage, an oxidizing-agent gas through the first supply port and a reducing-agent gas through the second supply port; a reaction cell configured to make a sample gas that has passed through the gas passage react with ozone; an ozone supply unit configured to supply the ozone into the reaction cell; a vacuum pump connected to the reaction cell; a photodetector configured to detect light generated inside the reaction cell; a signal receiving unit configured to receive a shutdown signal; and a shutdown functioning unit configured to control each unit to automatically stop supplying the reducing-agent gas and the oxidizing-agent gas by the oxidation-reduction gas supply unit, heating the gas passage by the heater, supplying the ozone by the ozone supply unit, and evType: GrantFiled: November 22, 2019Date of Patent: March 1, 2022Assignee: Shimadzu CorporationInventors: Masashi Yamane, Shigenobu Nakano
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Patent number: 11231374Abstract: A sulfur chemiluminescence detector 200 includes: a heating furnace including a gas passage having first and second supply ports, and a heater configured to heat the gas passage; an oxidation-reduction gas supply unit configured to supply, to the gas passage, an oxidizing-agent gas through the first supply port and a reducing-agent gas through the second supply port; a reaction cell configured to make a sample gas that has passed through the gas passage react with ozone; an ozone supply unit configured to supply the ozone into the reaction cell; a vacuum pump connected to the reaction cell; a photodetector configured to detect light generated inside the reaction cell; a signal receiving unit configured to receive a shutdown signal; and a shutdown functioning unit configured to control each unit to automatically stop supplying the reducing-agent gas and the oxidizing-agent gas by the oxidation-reduction gas supply unit, heating the gas passage by the heater, supplying the ozone by the ozone supply unit, and evType: GrantFiled: November 22, 2019Date of Patent: January 25, 2022Assignee: Shimadzu CorporationInventors: Masashi Yamane, Shigenobu Nakano
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Patent number: 11016064Abstract: A controller includes a temperature prediction unit. The temperature prediction unit predicts, on the assumption that a refrigerant is fed from a refrigerant feeder, an internal temperature of a column oven based on time interval information and decrement information in a memory. Thus, the temperature prediction unit can accurately predict the internal temperature of the column oven when the refrigerant is fed from the refrigerant feeder. If the refrigerant is fed from the refrigerant feeder when the predicted internal temperature of the column oven is suitable for the analysis operation, the internal temperature of the column oven can be brought closer to an appropriate temperature. As a result, the internal temperature of the column oven can be controlled with precision.Type: GrantFiled: July 11, 2018Date of Patent: May 25, 2021Assignee: Shimadzu CorporationInventors: Shigenobu Nakano, Yuki Komori, Masayuki Okada
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Publication number: 20200249170Abstract: A sulfur chemiluminescence detector 200 includes: a heating furnace including a gas passage having first and second supply ports, and a heater configured to heat the gas passage; an oxidation-reduction gas supply unit configured to supply, to the gas passage, an oxidizing-agent gas through the first supply port and a reducing-agent gas through the second supply port; a reaction cell configured to make a sample gas that has passed through the gas passage react with ozone; an ozone supply unit configured to supply the ozone into the reaction cell; a vacuum pump connected to the reaction cell; a photodetector configured to detect light generated inside the reaction cell; a signal receiving unit configured to receive a shutdown signal; and a shutdown functioning unit configured to control each unit to automatically stop supplying the reducing-agent gas and the oxidizing-agent gas by the oxidation-reduction gas supply unit, heating the gas passage by the heater, supplying the ozone by the ozone supply unit, and evType: ApplicationFiled: November 22, 2019Publication date: August 6, 2020Applicant: Shimadzu CorporationInventors: Masashi YAMANE, Shigenobu NAKANO
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Publication number: 20190025262Abstract: A controller includes a temperature prediction unit. The temperature prediction unit predicts, on the assumption that a refrigerant is fed from a refrigerant feeder, an internal temperature of a column oven based on time interval information and decrement information in a memory. Thus, the temperature prediction unit can accurately predict the internal temperature of the column oven when the refrigerant is fed from the refrigerant feeder. If the refrigerant is fed from the refrigerant feeder when the predicted internal temperature of the column oven is suitable for the analysis operation, the internal temperature of the column oven can be brought closer to an appropriate temperature. As a result, the internal temperature of the column oven can be controlled with precision.Type: ApplicationFiled: July 11, 2018Publication date: January 24, 2019Applicant: Shimadzu CorporationInventors: Shigenobu NAKANO, Yuki KOMORI, Masayuki OKADA
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Patent number: 9899203Abstract: The present invention is a mass spectrometer (1) for sequentially performing a measurement for a plurality of target ions, characterized by a storage section (41) for holding ion time-of-flight information concerning the time required for each of target ions to fly through each of the sections constituting the mass spectrometer, and a voltage controller (42) for changing, based on the ion time-of-flight information, the voltage applied to each of those sections to a voltage suited for each target ion, with a time lag corresponding to the difference in the timing of the arrival of the target ion at the section concerned.Type: GrantFiled: March 31, 2014Date of Patent: February 20, 2018Assignee: SHIMADZU CORPORATIONInventors: Shiro Mizutani, Shigenobu Nakano
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Publication number: 20170125233Abstract: The present invention is a mass spectrometer (1) for sequentially performing a measurement for a plurality of target ions, characterized by a storage section (41) for holding ion time-of-flight information concerning the time required for each of target ions to fly through each of the sections constituting the mass spectrometer, and a voltage controller (42) for changing, based on the ion time-of-flight information, the voltage applied to each of those sections to a voltage suited for each target ion, with a time lag corresponding to the difference in the timing of the arrival of the target ion at the section concerned.Type: ApplicationFiled: March 31, 2014Publication date: May 4, 2017Applicant: SHIMADZU CORPORATIONInventors: Shiro MIZUTANI, Shigenobu NAKANO
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Patent number: 9548193Abstract: In a scan measurement in which a mass scan is repeated across a predetermined mass range, when a voltage is returned from a termination voltage of one scan to an initiation voltage for the next scan, an undershoot or other drawbacks occur to destabilize the voltage value. Therefore, an appropriate waiting time is required. Conventionally, this waiting time has been set to be constant regardless of the analysis conditions. On the other hand, in the quadrupole mass spectrometer according to the present invention, the mass difference ?M between the scan termination mass and the scan initiation mass is computed based on the specified mass range, and a different settling time is set in accordance with this mass difference. When the mass difference ?M is small and hence requires only a short voltage stabilization time, a relatively short settling time is set. This shortens the cycle period of the mass scan, which increases the temporal resolution.Type: GrantFiled: May 26, 2008Date of Patent: January 17, 2017Assignee: SHIMADZU CORPORATIONInventors: Kazuo Mukaibatake, Shigenobu Nakano, Minoru Fujimoto
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Patent number: 9431224Abstract: When performing an automatic MS2 analysis on a specimen containing components that include elements whose abundance ratio of stable isotopes is close, to prevent the same component that includes isotopes of differing masses to be successively selected as a precursor ion and allow the MS2 analysis of various components whose retention time to elution is close. As precursor selection conditions, the user is allowed to set in advance the time period for automatic exclusion and a m/z range (?p, q) with respect to any m/z. When the analysis is performed, a precursor selection unit selects a precursor according to a predetermined selection condition for the MS spectrum that was obtained and repeats the MS2 analysis on the precursor ion (m/z=M) for the number of times that is set. Thereafter, for a specified automatic exclusion period, ions falling in a m/z range of M?p to M+q are excluded from selection as a precursor.Type: GrantFiled: April 19, 2011Date of Patent: August 30, 2016Assignee: SHIMADZU CORPORATIONInventor: Shigenobu Nakano
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Patent number: 8410436Abstract: In a scan measurement in which a mass scan is repeated across a predetermined mass range, when a voltage is returned from a termination voltage of one scan to an initiation voltage for the next scan, an undershoot or other drawbacks occur to destabilize the voltage value. Therefore, an appropriate waiting time is required. Conventionally, this waiting time has been set to be constant regardless of the analysis conditions. On the other hand, in the quadrupole mass spectrometer according to the present invention, the mass difference ?M between the scan termination mass and the scan initiation mass is computed based on the specified mass range, and a different settling time is set in accordance with this mass difference. When the mass difference ?M is small and hence requires only a short voltage stabilization time, a relatively short settling time is set. This shortens the cycle period of the mass scan, which increases the temporal resolution.Type: GrantFiled: November 22, 2010Date of Patent: April 2, 2013Assignee: Shimadzu CorporationInventors: Kazuo Mukaibatake, Shigenobu Nakano, Minoru Fujimoto
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Publication number: 20110303842Abstract: When performing an automatic MS2 analysis on a specimen containing components that include elements whose abundance ratio of stable isotopes is close, to prevent the same component that includes isotopes of differing masses to be successively selected as a precursor ion and allow the MS2 analysis of various components whose retention time to elution is close. As precursor selection conditions, the user is allowed to set in advance the time period for automatic exclusion and a m/z range (?p, q) with respect to any m/z. When the analysis is performed, a precursor selection unit selects a precursor according to a predetermined selection condition for the MS spectrum that was obtained and repeats the MS2 analysis on the precursor ion (m/z=M) for the number of times that is set. Thereafter, for a specified automatic exclusion period, ions falling in a m/z range of M?p to M+q are excluded from selection as a precursor.Type: ApplicationFiled: April 19, 2011Publication date: December 15, 2011Applicant: SHIMADZU CORPORATIONInventor: Shigenobu NAKANO
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Publication number: 20110101221Abstract: In a scan measurement in which a mass scan is repeated across a predetermined mass range, when a voltage is returned from a termination voltage of one scan to an initiation voltage for the next scan, an undershoot or other drawbacks occur to destabilize the voltage value. Therefore, an appropriate waiting time is required. Conventionally, this waiting time has been set to be constant regardless of the analysis conditions. On the other hand, in the quadrupole mass spectrometer according to the present invention, the mass difference ?M between the scan termination mass and the scan initiation mass is computed based on the specified mass range, and a different settling time is set in accordance with this mass difference. When the mass difference ?M is small and hence requires only a short voltage stabilization time, a relatively short settling time is set. This shortens the cycle period of the mass scan, which increases the temporal resolution.Type: ApplicationFiled: May 26, 2008Publication date: May 5, 2011Applicant: SHIMADZU CORPORATIONInventors: Kazuo Mukaibatake, Shigenobu Nakano, Minoru Fujimoto
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Publication number: 20110073756Abstract: In a scan measurement in which a mass scan is repeated across a predetermined mass range, when a voltage is returned from a termination voltage of one scan to an initiation voltage for the next scan, an undershoot or other drawbacks occur to destabilize the voltage value. Therefore, an appropriate waiting time is required. Conventionally, this waiting time has been set to be constant regardless of the analysis conditions. On the other hand, in the quadrupole mass spectrometer according to the present invention, the mass difference ?M between the scan termination mass and the scan initiation mass is computed based on the specified mass range, and a different settling time is set in accordance with this mass difference. When the mass difference ?M is small and hence requires only a short voltage stabilization time, a relatively short settling time is set. This shortens the cycle period of the mass scan, which increases the temporal resolution.Type: ApplicationFiled: November 22, 2010Publication date: March 31, 2011Applicant: SHIMADZU CORPORATIONInventors: Kazuo MUKAIBATAKE, Shigenobu NAKANO, Minoru FUJIMOTO