Patents Assigned to Oita University
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Patent number: 11907849Abstract: An information processing system includes a storage device that stores therein a trained model, and a processor. The trained model is trained to output a position and shape of an object in a training image based on training data. The training data is data in which the training image is provided with an annotation indicating the position and shape of the object. The training image is an image captured with an angle of view including the object whose position and shape are not clearly displayed in an image. The processor executes detection processing on a detection image to output detected information indicating the position and shape of the object. The processor then causes a display device to display the detected information superimposed on the detection image.Type: GrantFiled: May 28, 2021Date of Patent: February 20, 2024Assignees: OLYMPUS CORPORATION, National University Corporation OITA UNIVERSITY, FUKUOKA INSTITUTE OF TECHNOLOGYInventors: Makoto Ishikake, Toshiya Kamiyama, Masafumi Inomata, Tsuyoshi Etoh, Yukio Iwashita, Makoto Nakashima, Tatsushi Tokuyasu, Yusuke Matsunobu
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Publication number: 20230096685Abstract: When a metal catalyst is used as a catalyst in a catalyst layer of a polymer electrolyte fuel cell, improvement in catalytic activity and improvement in durability of the metal catalyst are intended. The catalyst composition of the present invention comprises a metal catalyst, a carbon material having a nitrogen-containing group on which the metal catalyst is carried, and an ionomer.Type: ApplicationFiled: March 5, 2021Publication date: March 30, 2023Applicants: NISSAN CHEMICAL CORPORATION, NATIONAL UNIVERSITY CORPORATION OITA UNIVERSITYInventors: Taichi NAKAZAWA, Taro KINUMOTO
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Publication number: 20220308073Abstract: An object of the present invention is to provide a marker useful for early diagnosis and differentiation of Alzheimer's disease, and use thereof. An Alzheimer's disease biomarker composed of blood flotillin is provided.Type: ApplicationFiled: May 30, 2022Publication date: September 29, 2022Applicants: PUBLIC UNIVERSITY CORPORATION NAGOYA CITY UNIVERSITY, NATIONAL UNIVERSITY CORPORATION OITA UNIVERSITYInventors: Makoto Michikawa, Hiroyasu Akatsu, Mohammad Abdullah, Etsuro Matsubara, Noriyuki Kimura
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Publication number: 20220119265Abstract: Provided are exfoliated graphite that rarely folds, rarely curls, and rarely causes corrosion of an electrode when used as the electrode material, and a method for manufacturing the exfoliated graphite. Exfoliated graphite being graphene or a laminate of graphene sheets, the exfoliated graphite having a ratio 2 D/G of 0.5 or more and 5.0 or less, the ratio 2 D/G being a peak area ratio of a 2 D band to a G band in a Raman. spectrum measured. using Raman spectroscopy, and a halogen content of 1,000 ppm or less.Type: ApplicationFiled: February 26, 2020Publication date: April 21, 2022Applicants: SEKISUI CHEMICAL CO., LTD., OITA UNIVERSITYInventors: Hiroji FUKUI, Akira NAKASUGA, Masahiro TOYODA
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Patent number: 11292794Abstract: The present disclosure provides a compound that is useful for the treatment and prophylaxis of rabies. The present disclosure provides a compound represented by formula XXIF or formula XXIB: wherein R1, R2A, R2B, R3, and R4 are defined in the specification, a solvent, or a pharmaceutically acceptable salt thereof, use of such a compound, solvate, or pharmaceutically acceptable salt thereof for the treatment or prophylaxis of rabies and cancer, a pharmaceutical composition comprising such a compound, solvate, or pharmaceutically acceptable salt thereof, and a method for the treatment or prophylaxis of rabies and cancer using the same.Type: GrantFiled: February 14, 2020Date of Patent: April 5, 2022Assignee: Oita University Institute of Advanced Medicine, Inc.Inventors: Hiroyuki Kouji, Kentaro Yamada, Akira Katoh, Toshimasa Ishizaki, Shigeru Matsuoka, Akira Nishizono, Tadashi Mishina, Atsushi Yoshimori
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Publication number: 20210395840Abstract: This invention provides a simple analysis method by a PCR method that simultaneously performs, in a single container, separating nucleic acid of pathogens contained in a tissue fragment and preparing a PCR buffer solution, and a kit used for the analysis method. A method for detecting a pathogen includes: (1) obtaining a liquid specimen mixture by adding a tissue fragment containing a pathogen to a PCR buffer solution containing a proteolytic enzyme; (2) heating the liquid specimen mixture at a first temperature; (3) further heating at a second temperature; (4) performing PCR by adding a portion of the liquid mixture obtained in (3) above to a solid composition for PCR reaction containing DNA polymerase and one or more kinds of PCR primer pair; and (5) detecting a PCR product generated in (4) above.Type: ApplicationFiled: January 27, 2021Publication date: December 23, 2021Applicants: SHIMADZU CORPORATION, National University Corporation Tokyo Medical and Dental University, Nihon Techno Service Co., Ltd., National University Corporation Oita University, RIKEN, Toho UniversityInventors: Masamitsu SHIKATA, Kenji NINOMIYA, Norio SHIMIZU, Hiroshi TAKASE, Manabu MOCHIZUKI, Yasuhiro TOMARU, Satoko NAKANO, Sunao SUGITA, Takashi SUZUKI
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Publication number: 20210287395Abstract: An information processing system includes a storage device that stores therein a trained model, and a processor. The trained model is trained to output a position and shape of an object in a training image based on training data. The training data is data in which the training image is provided with an annotation indicating the position and shape of the object. The training image is an image captured with an angle of view including the object whose position and shape are not clearly displayed in an image. The processor executes detection processing on a detection image to output detected information indicating the position and shape of the object. The processor then causes a display device to display the detected information superimposed on the detection image.Type: ApplicationFiled: May 28, 2021Publication date: September 16, 2021Applicants: OLYMPUS CORPORATION, National University Corporation OITA UNIVERSITY, Fukuoka Institute of TechnologyInventors: Makoto Ishikake, Toshiya Kamiyama, Masafumi Inomata, Tsuyoshi Etoh, Yukio Iwashita, Makoto Nakashima, Tatsushi Tokuyasu, Yusuke Matsunobu
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Publication number: 20210206998Abstract: An object of the present invention is to provide a novel liquid repellent. A liquid repellent including a poly(hydrocarbylamine) derivative, which is poly(hydrocarbylamine) substituted by one or more substituents, wherein at least one of the substituents is a substituent on an amine nitrogen in the poly(hydrocarbylamine), and is represented by the formula: —Ray in which Ray is a hydroxyethyl group optionally having one or more substituents (at least one of the substituents is an alkyl group optionally having one or more substituents).Type: ApplicationFiled: April 12, 2019Publication date: July 8, 2021Applicants: DAIKIN INDUSTRIES, LTD., NATIONAL UNIVERSITY CORPORATION OITA UNIVERSITYInventors: Tsutomu KOBAYASHI, Atsushi SHIRAI, Yosuke KISHIKAWA, Seiji UJIIE, Shiori TOMITAKA
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Publication number: 20200224365Abstract: The present invention provides: a cellulose nanofiber enabling the provision of a high-performance sheet-like material; a method for producing the cellulose nanofiber; and a sheet-like material obtained from the cellulose nanofiber. A bamboo-derived cellulose nanofiber having a cellulose purity of at least 90%, a fiber diameter of 10-20 nm, and a crystallinity of at least 70% can be obtained by a method comprising: (1) a step for subjecting a bamboo material to an alkali treatment and a mechanical treatment to prepare bamboo fibers; (2) a step for delignificating the obtained bamboo fibers; (3) a step for mechanically spreading the delignificated bamboo fibers; (4) a step for removing hemicellulose from the spread bamboo fibers; and (5) a step for removing metal components from the bamboo fibers from which hemicellulose has been removed.Type: ApplicationFiled: March 12, 2018Publication date: July 16, 2020Applicant: NATIONAL UNIVERSITY CORPORATION OITA UNIVERSITYInventor: Taro KINUMOTO
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Patent number: 10658126Abstract: There is provided a capacitor electrode material that does not require the use of a conductive aid and can increase the capacitance of an electric double layer capacitor. A capacitor electrode material comprising resin-remaining partially exfoliated graphite obtained by pyrolyzing a resin in a composition in which the resin is fixed to graphite or primary exfoliated graphite by grafting or adsorption, the resin-remaining partially exfoliated graphite having a structure in which graphite is partially exfoliated, with part of the resin remaining; and a binder resin.Type: GrantFiled: December 19, 2014Date of Patent: May 19, 2020Assignees: SEKISUI CHEMICAL CO., LTD., OITA UNIVERSITYInventors: Akihiko Fujiwara, Shoji Nozato, Akira Nakasuga, Shunji Hyodo, Hiroshi Yoshitani, Masahiro Toyoda
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Patent number: 10508709Abstract: In a vibration damping device 20, the moment of inertia J1 of a driven member 15, the moment of inertia J2 of an inertial mass body 23, the mass m of crank members 22, the distance L3 between the center of gravity G of the crank member 22 and the fulcrum of swinging of the crank member 22 with respect to the inertial mass body 23, and the distance L4 between this fulcrum and the center of rotation RC are determined so that torque fluctuation of an object for which vibration is to be damped, which is derived based on angular displacement and angles obtained by solving an equation of motion for the driven member 15 and an equation of motion for the entire vibration damping device 20 is equal to a target value.Type: GrantFiled: September 29, 2017Date of Patent: December 17, 2019Assignees: AISIN AW CO., LTD., NATIONAL UNIVERSITY CORPORATION OITA UNIVERSITY, Kagoshima UniversityInventors: Yoichi Oi, Masaki Wajima, Hiroki Nagai, Takao Sakamoto, Takahiro Ryu, Takashi Nakae, Kenichiro Matsuzaki
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Patent number: 10458775Abstract: An apparatus is provided to measure a depth of a hardened layer formed at a surface layer of a quenched workpiece. The apparatus includes an exciting coil configured to generate a magnetic flux to magnetize the workpiece and a detecting coil configured to detect the magnetic flux generated by the exciting coil. The exciting coil has a U-shaped excitation core portion and an excitation coil portion wound on the excitation core portion. The excitation core portion is arranged such that distal ends of magnetic poles of the excitation core portion face the workpiece. The detecting coil has a detection core portion and a detection coil wound on the detection core portion. The detection core portion is arranged between the magnetic poles of the excitation core portion and along a surface of the workpiece.Type: GrantFiled: March 2, 2016Date of Patent: October 29, 2019Assignees: NETUREN CO., LTD., OITA UNIVERSITYInventors: Yoshitaka Misaka, Kazuhiro Kawasaki, Kenta Sakurai, Yuji Gotoh
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Publication number: 20190226552Abstract: In a vibration damping device 20, the moment of inertia J1 of a driven member 15, the moment of inertia J2 of an inertial mass body 23, the mass m of crank members 22, the distance L3 between the center of gravity G of the crank member 22 and the fulcrum of swinging of the crank member 22 with respect to the inertial mass body 23, and the distance L4 between this fulcrum and the center of rotation RC are determined so that torque fluctuation of an object for which vibration is to be damped, which is derived based on angular displacement and angles obtained by solving an equation of motion for the driven member 15 and an equation of motion for the entire vibration damping device 20 is equal to a target value.Type: ApplicationFiled: September 29, 2017Publication date: July 25, 2019Applicants: AISIN AW CO., LTD., NATIONAL UNIVERSITY CORPORATION OITA UNIVERSITY, Kagoshima UniversityInventors: Yoichi OI, Masaki WAJIMA, Hiroki NAGAI, Takao SAKAMOTO, Takahiro RYU, Takashi NAKAE, Kenichiro MATSUZAKI
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Patent number: 10284075Abstract: An overvoltage protection circuit is provided which is connected between a rectifier circuit and a load including an input capacitor element connected to both ends of the load. The overvoltage protection circuit includes a semiconductor switch connected between the rectifier circuit and the load, and a control circuit controls the semiconductor switch. When the rectified voltage exceeds a predetermined value, the control circuit turns off the semiconductor switch, and detects a voltage potential difference between both ends of the semiconductor switch, and then, for an interval when the voltage potential difference is zero or a predetermined minute value, the control circuit generates a control voltage for turning on the semiconductor switch, and outputs the control voltage to a control terminal of the semiconductor switch. The overvoltage protection circuit includes a current change circuit that gradually changes a current flowing through the semiconductor switch.Type: GrantFiled: August 1, 2018Date of Patent: May 7, 2019Assignees: RICOH ELECTRONIC DEVICES CO., LTD., NATIONAL UNIVERSITY CORPORATION OITA UNIVERSITYInventors: Shohtaroh Sohma, Yuji Takeyama, Kimihiro Nishijima
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Publication number: 20190058323Abstract: An overvoltage protection circuit is provided which is connected between a rectifier circuit and a load including an input capacitor element connected to both ends of the load. The overvoltage protection circuit includes a semiconductor switch connected between the rectifier circuit and the load, and a control circuit controls the semiconductor switch. When the rectified voltage exceeds a predetermined value, the control circuit turns off the semiconductor switch, and detects a voltage potential difference between both ends of the semiconductor switch, and then, for an interval when the voltage potential difference is zero or a predetermined minute value, the control circuit generates a control voltage for turning on the semiconductor switch, and outputs the control voltage to a control terminal of the semiconductor switch. The overvoltage protection circuit includes a current change circuit that gradually changes a current flowing through the semiconductor switch.Type: ApplicationFiled: August 1, 2018Publication date: February 21, 2019Applicants: RICOH ELECTRONIC DEVICES CO., LTD., NATIONAL UNIVERSITY CORPORATION OITA UNIVERSITYInventors: Shohtaroh SOHMA, Yuji TAKEYAMA, Kimihiro NISHIJIMA
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Patent number: 10192669Abstract: A vector-magnetic-property-controlling material according to the present embodiment is subjected to a scratching process in two directions that intersect on the surface of a steel material. An iron core according to the present embodiment is configured from an oriented magnetic steel material which has been subjected to a scratching process in two directions that intersect on the surface thereof.Type: GrantFiled: November 21, 2014Date of Patent: January 29, 2019Assignees: TOSHIBA INDUSTRIAL PRODUCTS & SYSTEMS CORPORATION, NATIONAL UNIVERSITY CORPORATION OITA UNIVERSITYInventors: Masato Enokizono, Hiromu Shiota, Eiji Shimomura, Tsuyoshi Masuda
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Publication number: 20180187744Abstract: A vibration damping device 20 includes: a crank member 22 that is coupled to a driven member 15 via a first coupling shaft A1 and that is swingable about the first coupling shaft A1 along with rotation of the driven member 15; and an inertial mass body 24 that is coupled to the driven member 15 via the crank member 22 and a connecting rod 23 and that is swung about a center of rotation RC in conjunction with the crank member 22 along with rotation of the driven member 15. A component force of a centrifugal force that acts on the crank member 22 along with rotation of the driven member 15 in a direction that is orthogonal to the direction from the center of the first coupling shaft A1 toward the center of gravity G always acts on the crank member 22 as a restoring force that acts to return the inertial mass body 24 to the center of the swing range. The component force is maximum when the inertial mass body 24 is positioned at the center of the swing range.Type: ApplicationFiled: July 15, 2016Publication date: July 5, 2018Applicants: AISIN AW CO., LTD., NATIONAL UNIVERSITY CORPORATION OITA UNIVERSITY, KAGOSHIMA UNIVERSITYInventors: Yoshihiro TAKIKAWA, Hiroki NAGAI, Masaki WAJIMA, Takao SAKAMOTO, Takahiro RYU, Takashi NAKAE, Kenichiro MATSUZAKI
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Patent number: 9962683Abstract: The present invention provides an alloy fine particle including palladium and ruthenium, the alloy fine particle including at least one first phase in which the palladium is more abundant than the ruthenium and at least one second phase in which the ruthenium is more abundant than the palladium, the at least one first phase and the at least one second phase being separated by a phase boundary, the palladium and the ruthenium being distributed in the phase boundary in such a manner that the molar ratio of the palladium and the ruthenium continually changes, a plurality of crystalline structures being present together in the phase boundary.Type: GrantFiled: September 9, 2015Date of Patent: May 8, 2018Assignees: Kyoto University, OITA UNIVERSITY, KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATIONInventors: Hiroshi Kitagawa, Kohei Kusada, Hirokazu Kobayashi, Katsutoshi Nagaoka, Katsutoshi Sato, Syo Matsumura, Tomokazu Yamamoto
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Patent number: 9960678Abstract: In a power converter, a first electrical path connects between the series resonant circuit and a selected terminal from the high- and low-side input and output terminals of the power converter. An auxiliary diode is provided on one of the series resonant circuit and the first electrical path. An auxiliary switch, when turned on, causes an inductor current to flow through the auxiliary diode to the resonance inductor, thus storing electromagnetic energy into the resonance inductor, and causes the resonance inductor and the capacitance component of the series resonant circuit to resonate with each other. A second electrical path bypasses the auxiliary switch for flow of the inductor current. A discharge unit is provided on the second electrical path. The discharge unit is activated to discharge the electromagnetic energy stored in the resonance inductor via the second electrical path.Type: GrantFiled: June 21, 2017Date of Patent: May 1, 2018Assignees: DENSO CORPORATION, NATIONAL UNIVERSITY CORPORATION OITA UNIVERSITYInventors: Eisuke Takahashi, Masaya Takahashi, Kimihiro Nishijima
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Patent number: 9919926Abstract: The present invention provides a method for producing a random-structure GIC in which exfoliated graphite having a low regularity of a graphene stacked state and a small number of stacked graphene layers can be easily obtained by exfoliation treatment. The method includes the steps of providing an alkali metal-GIC having an alkali metal intercalated between graphene layers and bringing a polar protic solvent into contact with the alkali metal-GIC in a non-oxidizing atmosphere.Type: GrantFiled: March 4, 2014Date of Patent: March 20, 2018Assignees: SEKISUI CHEMICAL CO., LTD., OITA UNIVERSITYInventors: Takuya Wada, Akira Nakasuga, Masahiro Toyoda