Patents by Inventor Takao Marui
Takao Marui 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: 10837925Abstract: An X-ray detector monitoring device capable of detecting a time when an X-ray detector is disabled due to a slow leak is provided. The X-ray detector monitoring device is provided with an X-ray detection element 32 for detecting X-ray intensity, an X-ray detector 30 having a vacuum insulation container 33 in which an X-ray introduction window 31 is formed, a cooling means 60 for cooling the X-ray detection element 32, a detection element temperature sensor 81 mounted on the X-ray detection element 32 to output detection element temperature information Tt by detecting a temperature of an X-ray detection element 32, and a control unit 40 and 70 configured to calculate an output value for controlling the cooling means 60 to output the output value to the cooling means 60 so that the detection element temperature information Tt becomes a preset temperature TS. The control unit 40 and 70 is configured to detect a vacuum state of the vacuum insulation container 33 based on the output value.Type: GrantFiled: February 21, 2020Date of Patent: November 17, 2020Assignee: Shimadzu CorporationInventors: Keijiro Suzuki, Takao Marui
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Patent number: 10278273Abstract: A heat pump is used to cool an X-ray tube, and waste heat from the heat pump is used to heat a separate part (a spectroscope, for example). As a result, the X-ray tube can be cooled using the heat pump, and the waste heat from the heat pump resulting from the cooling thereof can be used to heat a separate part. In this way, by heating a separate part using the waste heat from the heat pump, it is possible to effectively utilize heat generated from the X-ray tube so as to reduce the power consumption.Type: GrantFiled: June 30, 2016Date of Patent: April 30, 2019Assignee: SHIMADZU CORPORATIONInventor: Takao Marui
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Patent number: 10145809Abstract: The invention provides a sensitivity correction coefficient calculating system for an X-ray detector with which the sensitivity correction coefficient can be calculated using a multipurpose X-ray source instead of a specific X-ray source. In the sensitivity correction coefficient calculating system for an X-ray detector having a detection surface where detection elements for detection the X-ray intensity are aligned one-dimensionally or two-dimensionally, fitting is carried out on the measured X-ray intensity detected by a detection element using an approximation function so as to calculate the sensitivity correction coefficient using the calculated X-ray intensity calculated from the approximation function and the measured X-ray intensity.Type: GrantFiled: June 28, 2016Date of Patent: December 4, 2018Assignee: SHIMADZU CORPORATIONInventor: Takao Marui
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Publication number: 20180007768Abstract: A heat pump is used to cool an X-ray tube, and waste heat from the heat pump is used to heat a separate part (a spectroscope, for example). As a result, the X-ray tube can be cooled using the heat pump, and the waste heat from the heat pump resulting from the cooling thereof can be used to heat a separate part. In this way, by heating a separate part using the waste heat from the heat pump, it is possible to effectively utilize heat generated from the X-ray tube so as to reduce the power consumption.Type: ApplicationFiled: June 30, 2016Publication date: January 4, 2018Applicant: SHIMADZU CORPORATIONInventor: Takao MARUI
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Publication number: 20170371047Abstract: The invention provides a sensitivity correction coefficient calculating system for an X-ray detector with which the sensitivity correction coefficient can be calculated using a multipurpose X-ray source instead of a specific X-ray source. In the sensitivity correction coefficient calculating system for an X-ray detector having a detection surface where detection elements for detection the X-ray intensity are aligned one-dimensionally or two-dimensionally, fitting is carried out on the measured X-ray intensity detected by a detection element using an approximation function so as to calculate the sensitivity correction coefficient using the calculated X-ray intensity calculated from the approximation function and the measured X-ray intensity.Type: ApplicationFiled: June 28, 2016Publication date: December 28, 2017Applicant: SHIMADZU CORPORATIONInventor: Takao MARUI
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Patent number: 9835571Abstract: The detection surface of each of a plurality of detection elements is arranged on an arc along a diffractometer circle (reference circle). This allows each detection element to detect X-rays diffracted by a specimen at the focal position. Because this prevents errors in the X-ray intensity detected by each detection element, more accurate diffraction information can be obtained. As a result, a more accurate analysis can be performed in less time by detecting X-rays diffracted by the specimen using a plurality of detection elements.Type: GrantFiled: October 6, 2015Date of Patent: December 5, 2017Assignee: SHIMADZU CORPORATIONInventors: Tetsuya Yoneda, Takao Marui, Masashi Matsuo
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Publication number: 20170097309Abstract: The detection surface of each of a plurality of detection elements is arranged on an arc along a diffractometer circle (reference circle). This allows each detection element to detect X-rays diffracted by a specimen at the focal position. Because this prevents errors in the X-ray intensity detected by each detection element, more accurate diffraction information can be obtained. As a result, a more accurate analysis can be performed in less time by detecting X-rays diffracted by the specimen using a plurality of detection elements.Type: ApplicationFiled: October 6, 2015Publication date: April 6, 2017Applicant: SHIMADZU CORPORATIONInventors: Tetsuya YONEDA, Takao MARUI, Masashi MATSUO
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Patent number: 6664544Abstract: A magnetic immersion lens has inner and outer pole-pieces arranged symmetrically about a longitudinal axis X-X of the lens, the inner pole piece having a through-bore and the lens producing a magnetic imaging field for directing along the through-bore secondary electrons emitted from a specimen positioned in front of the inner pole-piece. The lens has an axially-symmetric detection arrangement located within the through-bore.Type: GrantFiled: November 13, 2001Date of Patent: December 16, 2003Assignee: Shimadzu Research Laboratory (Europe) Ltd.Inventors: Takao Marui, Ranjan Krishnachandra Badheka, Frank Henry Read
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Publication number: 20030133536Abstract: An X-ray fluorescence spectrometer includes an X-ray tube, a collimator or capillary lens for irradiating a primary X-ray from the X-ray tube on a sample, and a detector for detecting an X-ray fluorescence from the sample. The detector is enclosed in a sealed chamber for preventing the X-ray fluorescence from being attenuated by the air. In addition, both ends of the collimator or capillary lens are sealed by thin films having high X-ray permeability for preventing the primary X-ray from being attenuated by the air.Type: ApplicationFiled: December 12, 2002Publication date: July 17, 2003Applicant: SHIMADZU CORPORATIONInventors: Shoji Kuwabara, Takao Marui
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Patent number: 5675148Abstract: A scanning reflection electron diffraction microscope causes a primary electron beam from its electron gun to be reflectively diffracted from a sample and a diffraction pattern to be formed on a fluorescent screen. An optical lens reduces this diffraction pattern in size and forms its reduced image on a photoelectric surface, thereby producing an image-carrying electron beam. Deflected by a deflecting system including a deflecting coil and a condenser coil, the image-carrying electron beam is detected by an electron-multiplier such that a diffraction pattern is displayed on a cathode ray tube.Type: GrantFiled: January 29, 1992Date of Patent: October 7, 1997Assignee: Shimadzu CorporationInventor: Takao Marui
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Patent number: 5387794Abstract: A detector for electrons diffracted by a sample irradiated with an electron beam uses a fluorescent screen to output optical signals representing the diffraction pattern formed by the diffracted electrons, and a TV camera to convert these optical signals to electrical signals. A photoelectric converter is used to determine the brightness of each position on the fluorescent screen but its position is controlled such that the converter will not obstruct the view of the fluorescent screen from the TV camera. Coordinate data on the positions at which the measured brightness is greater than a specified standard brightness value may be stored and relied upon in moving the photoelectric converter, or the light-receiving end of an optical fiber connected thereto, relative to the fluorescent screen.Type: GrantFiled: January 10, 1994Date of Patent: February 7, 1995Assignee: Shimadzu CorporationInventor: Takao Marui
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Patent number: 5371366Abstract: A time-of-flight (TOF) type ion scattering spectroscope (ISS) using a mixture of ions of different masses. Ions having a mass smaller than the smallest mass of the atoms in the sample surface can precisely discriminate light-weight object atoms of slightly different masses. Ions having an intermediate mass between heavy-weight atoms and light-weight atoms in the sample surface can precisely discriminate heavy-weight object atoms of slightly different masses.Type: GrantFiled: June 17, 1993Date of Patent: December 6, 1994Assignee: Shimadzu CorporationInventor: Takao Marui
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Patent number: 4604794Abstract: A method of manufacturing battery plate groups by forming folding habits in a soft, continuous separator at regular intervals so that the folding directions may be alternated, and then alternately inserting positive plates and negative plates between the separator portions.Type: GrantFiled: July 21, 1982Date of Patent: August 12, 1986Assignee: Yuasa Battery Company LimitedInventors: Takao Marui, Tetsuo Uwani