Patents by Inventor Kazutaka FUJITA
Kazutaka FUJITA 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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Publication number: 20250114028Abstract: A device that is also applicable to an olfactory test is provided. The present technology provides an olfactory test device including: a main body; and a cartridge that holds an odor component, in which the main body includes a cartridge holding unit that holds the cartridge, a detection unit that detects an attachment status of the cartridge with respect to the cartridge holding unit, and an output unit that outputs a detection signal of cartridge attachment in the detection unit. The present technology also provides an olfactory test system including: the olfactory test device; and an information processing device including a processing unit that manages a state of the cartridge on the basis of the detection signal output from the output unit.Type: ApplicationFiled: October 19, 2022Publication date: April 10, 2025Inventors: YUKITO INOUE, SHUJI FUJITA, KAZUTAKA TAKAKI, YUKI HASHIMOTO
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Patent number: 12196698Abstract: A metal oxide semiconductor gas sensor includes a first electrode, a second electrode, and a sensing layer in contact with the first electrode and the second electrode. The sensing layer includes SnO2 and WO3. A cross section of the sensing layer has an average porosity of 16.0% or more and 22.0% or less. SnO2 occupies 60 vol % or more and 80 vol % or less and WO3 occupies 20 vol % or more and 40 vol % or less in the sensing layer provided that pores are not counted as part of the sensing layer.Type: GrantFiled: November 10, 2022Date of Patent: January 14, 2025Assignee: TDK CORPORATIONInventors: Tomokazu Ishikura, Kazutaka Fujita, Raitaro Masaoka
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Publication number: 20240344942Abstract: A method for preparing a sample from a specimen includes treating a biopsy tissue taken from a lung cancer patient with negative pressure in an isotonic solution to release a cell from the biopsy tissue, collecting the isotonic solution containing the released cell, and mixing the collected isotonic solution and a cytologic specimen collected from the lung cancer patient together to obtain a cell suspension, wherein the cytologic specimen is one or more selected from the group consisting of a bronchial lavage fluid, a bronchoalveolar lavage fluid, a bronchial scraping lavage fluid and a puncture needle lavage fluid, and wherein the biopsy tissue and the cytologic specimen contain a tumor cell.Type: ApplicationFiled: April 10, 2024Publication date: October 17, 2024Inventors: Kazutaka FUJITA, Koichi HAGIWARA
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Publication number: 20240159700Abstract: A metal oxide semiconductor gas sensor includes a first electrode, a second electrode, and a sensing layer in contact with the first electrode and the second electrode. The sensing layer includes SnO2 and WO3. A cross section of the sensing layer has an average porosity of 16.0% or more and 22.0% or less. SnO2 occupies 60 vol % or more and 80 vol % or less and WO3 occupies 20 vol % or more and 40 vol % or less in the sensing layer provided that pores are not counted as part of the sensing layer.Type: ApplicationFiled: November 10, 2022Publication date: May 16, 2024Applicant: TDK CORPORATIONInventors: Tomokazu ISHIKURA, Kazutaka FUJITA, Raitaro MASAOKA
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Publication number: 20230280296Abstract: A sensor including a micro-bridge structure, wherein the micro-bridge structure comprises a concave geometry, a first electrode on a surface of the micro-bridge structure, a second electrode on the surface of the micro-bridge structure, and a chemical sensing material coupled to the micro-bridge structure overlying the first electrode and the second electrode and exposed to an environment. The chemical sensing material overlays the first electrode and the second electrode and is within the concave geometry of the micro-bridge structure such that the chemical sensing material settles into the concave geometry of the micro-bridge structure during fabrication of the sensor, and wherein the chemical sensing material has an electrical resistance responsive to a concentration of gas in the environment.Type: ApplicationFiled: February 28, 2023Publication date: September 7, 2023Applicant: TDK CORPORATIONInventors: Nishit GOEL, Stephen BART, Raitaro MASAOKA, Kazutaka FUJITA, Tomokazu ISHIKURA
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Patent number: 10014097Abstract: A semiconductor ceramic composition including a compound represented by the following general formula (1) as a main component. (BavBixAyREw)m(TiuTMz)O3??(1) (wherein, A represents both elements of Na and K; RE is at least one element selected from the group consisting of Y, La, Ce, Pr, Nd, Sm, Gd, Dy and Er; and TM is at least one element selected from the group consisting of V, Nb and Ta.) 0.01?x?0.15??(2) x?y?0.3??(3) 0?(w+z)?0.01??(4) v+x+y+w=1??(5) u+z=1??(6) 0.950?m?1.050??(7) further, 0.001 mol to 0.055 mol of Ca is included and the ratio of Na/(Na+K) is 0.1 or more and less than 1.Type: GrantFiled: July 28, 2016Date of Patent: July 3, 2018Assignee: TDK CORPORATIONInventors: Kazutaka Fujita, Kazuhiko Itoh, Yoshikazu Shimura
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Patent number: 9827553Abstract: To provide an alumina-based fibrous mass having a high areal pressure and is usable as a holding material for an exhaust gas cleaners and a production process thereof; the alumina-based fibrous mass has a chemical composition containing an Al2O3 in an amount of 70% or more and less than 90% and having a total pore volume of 0.0055 mL/g or less.Type: GrantFiled: October 31, 2013Date of Patent: November 28, 2017Assignees: DENKA COMPANY LIMITED, SAFFIL LIMITEDInventors: Yasutaka Ohshima, Masaaki Watanabe, Masanori Hisamoto, Ryoetsu Yoshino, Kazutaka Fujita, Masataka Eguchi, Adam Kelsall, Kelvin Weeks, Jonathan Cross
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Publication number: 20170229219Abstract: A semiconductor ceramic composition which is a BaTiO3 based semiconductor ceramic composition, wherein, part of Ba is replaced by at least A (at least one alkali metal element selected from Na and K), Bi and RE (at least one element selected from rare earth elements including Y), and part of Ti is replaced by at least TM (at least one element selected from the group including of V, Nb and Ta), the relationships of 0.7?{(the content of Bi)/(the content of A)}?1.43, 0.017?{(the content of Bi)+(the content of A)}?0.25, and 0<{(the content of RE)+(the content of TM)}?0.01 are satisfied when the total content of Ti and TM is set as 1 mol, the grain sizes have a maximum peak in a grain size distribution in a range of 1.1 ?m to 4.0 ?m or less, and the distribution frequency of the peak is 20% or more.Type: ApplicationFiled: January 19, 2017Publication date: August 10, 2017Applicant: TDK CORPORATIONInventors: Kazuhiko ITOH, Yoshikazu SHIMURA, Kazutaka FUJITA, Hiroki MORIKOSHI, Tomohiro TERADA
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Publication number: 20170226018Abstract: A semiconductor ceramic composition represented by formula (1), (BavBixAyREw)m(TiuTMz)O3??(1), wherein, A represents at least one element selected from Na and K, RE represents at least one element selected from Y, La, Ce, Pr, Nd, Sm, Gd, Dy and Er; 0.750y?x?1.50y??(2), 0.007?y?0.125??(3), 0?(w+z)?0.010??(4), v+x+y+w=1??(5), u+z=1??(6), 0.950?m?1.050??(7), 0.001 to 0.055 mol of Ca is contained, and 0.0005 to 0.005 mol of at least one selected from Mg, Al, Fe, Co, Cu and Zn is contained.Type: ApplicationFiled: February 1, 2017Publication date: August 10, 2017Applicant: TDK CORPORATIONInventors: Kazutaka FUJITA, Kazuhiko ITOH, Yoshikazu SHIMURA, Hiroki MORIKOSHI, Tomohiro TERADA
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Publication number: 20170040092Abstract: A semiconductor ceramic composition including a compound represented by the following general formula (1) as a main component. (BavBixAyREw)m(TiuTMz)O3 ??(1) (wherein, A represents both elements of Na and K; RE is at least one element selected from the group consisting of Y, La, Ce, Pr, Nd, Sm, Gd, Dy and Er; and TM is at least one element selected from the group consisting of V, Nb and Ta.) 0.01?x?0.15 ??(2) x?y?0.3 ??(3) 0?(w+z)?0.01 ??(4) v+x+y+w=1 ??(5) u+z=1 ??(6) 0.950?m?1.050 ??(7) further, 0.001 mol to 0.055 mol of Ca is included and the ratio of Na/(Na+K) is 0.1 or more and less than 1.Type: ApplicationFiled: July 28, 2016Publication date: February 9, 2017Applicant: TDK CORPORATIONInventors: Kazutaka FUJITA, Kazuhiko ITOH, Yoshikazu SHIMURA
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Patent number: 9472326Abstract: A semiconductor ceramic composition with small resistivity at room temperature and large temperature coefficient of resistance is provided; the composition is represented by formula, (Ba1-x-y-wBixAyREw)m(Ti1-zTMz)O3??(1), (wherein, A is at least one element from Na or K, RE is at least one element from the group consisting of Y, La, Ce, Pr, Nd, Sm, Gd, Dy and Er, TM is at least one element from the group consisting of V, Nb and Ta, and w, x, y, z (each in mol) and the mole ratio m of Ba site to Ti site satisfy the following in equations, 0.007?x?0.125??(2) x<y?2.0x??(3) 0?(w+z)?0.010??(4) 0.940?m?0.999??(5)), and further includes Sr in a proportion of 0.010 mol or more and 0.050 mol or less relative to 1 mol of Ti site, and the mole ratio u of Sr and the mole ratio x of Bi satisfy the following in equation, u?1.8x?0.008??(6).Type: GrantFiled: June 26, 2015Date of Patent: October 18, 2016Assignee: TDK CORPORATIONInventors: Yoshikazu Shimura, Kazuhiko Itoh, Kazutaka Fujita
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Publication number: 20160005517Abstract: A semiconductor ceramic composition with small resistivity at room temperature and large temperature coefficient of resistance is provided; the composition is represented by formula, (Ba1-x-y-wBixAyREw)m(Ti1-zTMz)O3 ??(1), (wherein, A is at least one element from Na or K, RE is at least one element from the group consisting of Y, La, Ce, Pr, Nd, Sm, Gd, Dy and Er, TM is at least one element from the group consisting of V, Nb and Ta, and w, x, y, z (each in mol) and the mole ratio m of Ba site to Ti site satisfy the following in equations, 0.007?x?0.125 ??(2) x?y?2.0x ??(3) 0?(w+z)?0.010 ??(4) 0.940?m?0.999 ??(5)), and further includes Sr in a proportion of 0.010 mol or more and 0.050 mol or less relative to 1 mol of Ti site, and the mole ratio u of Sr and the mole ratio x of Bi satisfy the following in equation, u?1.8x?0.008 ??(6).Type: ApplicationFiled: June 26, 2015Publication date: January 7, 2016Inventors: Yoshikazu SHIMURA, Kazuhiko ITOH, Kazutaka FUJITA
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Publication number: 20150354099Abstract: There is provided an alumina fiber capable of fixing a honeycomb carrier while maintaining elasticity for a long period of time even in a severe usage environment, and an alumina fiber aggregate formed of the fiber. Problems in a gripping material of an automotive honeycomb carrier are solved by applying an alumina fiber containing from 70 to 98% by mass of alumina and from 2 to 30% by mass of silica, having an average fiber diameter of from 3.0 to 8.0 ?m, a ratio of fibers having a fiber diameter exceeding 10 ?m being 5% or less in terms of the number of fibers and a size of a mullite crystallite contained in each fiber of from 10 to 1500 ?, and by forming an alumina fiber aggregate by using the fibers.Type: ApplicationFiled: January 23, 2014Publication date: December 10, 2015Applicant: DENKI KAGAKU KOGYO KABUSHIKI KAISHAInventors: Yasutaka OHSHIMA, Haruko SAKAI, Masataka EGUCHI, Kazutaka FUJITA, Ryochi SUZUKI
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Publication number: 20150251163Abstract: To provide an alumina-based fibrous mass having a high areal pressure and is usable as a holding material for an exhaust gas cleaners and a production process thereof; the alumina-based fibrous mass has a chemical composition containing an Al2O3 in an amount of 70% or more and less than 90% and having a total pore volume of 0.0055 mL/g or less.Type: ApplicationFiled: October 31, 2013Publication date: September 10, 2015Applicants: SAFFIL LIMITED, DENKI KAGAKU KOGYO KABUSHIKI KAISHAInventors: Yasutaka Ohshima, Masaaki Watanabe, Masanori Hisamoto, Ryoetsu Yoshino, Kazutaka Fujita, Masataka Eguchi, Adam Kelsall, Kelvin Weeks, Jonathan Cross
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Publication number: 20090128949Abstract: A head apparatus includes: a head unit where a plurality of magnetic elements, which carry out reproducing and/or recording on data tracks on a magnetic tape, are disposed at equal intervals on a first straight line; a moving mechanism that moves the head unit; and a controller that carries out tracking control to cause the moving mechanism to move the head unit and keep the magnetic elements on the data tracks. The moving mechanism can rotate the head unit so as to increase or decrease an angle between a second straight line along a width of the magnetic tape and the first straight line. During tracking control, the controller causes the moving mechanism to rotate the head unit so as to increase or decrease the angle in accordance with changes in an interval between the data tracks and keep the respective magnetic elements on the respective data tracks.Type: ApplicationFiled: November 7, 2008Publication date: May 21, 2009Applicant: TDK CORPORATIONInventors: Koji MATSUNO, Takashi HANDA, Osamu INOUE, Keiji TESHIMA, Kazutaka FUJITA
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Publication number: 20090109563Abstract: A burst interval measuring apparatus includes: a detector that outputs detection signals that can to measure a burst interval of servo patterns for a tracking servo; and a measuring unit that measures the burst interval based on the detection signals. The detector is constructed so as to be capable of outputting the detection signals that can measure the burst interval at plural positions that are separated in a width direction of the magnetic tape inside one of the servo patterns. The measuring unit uses measurement values for the burst interval at at least two positions out of the plural positions that have been measured based on the detection signals to specify velocity fluctuations in a movement velocity of the magnetic tape in the length direction and corrects the measurement values based on the velocity fluctuations.Type: ApplicationFiled: October 6, 2008Publication date: April 30, 2009Applicant: TDK CORPORATIONInventors: Takashi HANDA, Koji MATSUNO, Osamu INOUE, Keiji TESHIMA, Kazutaka FUJITA
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Publication number: 20080239565Abstract: A servo pattern recording device capable of improving the recording accuracy of a servo pattern. The servo pattern recording device is comprised of a magnetic head that records a servo pattern for tracking servo on a magnetic tape, a first motor that feeds the magnetic tape, a second motor that takes up the magnetic tape, and a main panel along a surface of which the magnetic tape is caused to move. The first motor and the second motor are mounted on the main panel, and the magnetic head is mounted on a first sub panel that is formed separately from the main panel and is connected to the main panel via a connecting member.Type: ApplicationFiled: March 21, 2008Publication date: October 2, 2008Applicant: TDK CORPORATIONInventors: Osamu INOUE, Keiji TESHIMA, Koji MATSUNO, Takashi HANDA, Kazutaka FUJITA