Patents Assigned to Oita University
  • Patent number: 11907849
    Abstract: 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: Grant
    Filed: May 28, 2021
    Date of Patent: February 20, 2024
    Assignees: OLYMPUS CORPORATION, National University Corporation OITA UNIVERSITY, FUKUOKA INSTITUTE OF TECHNOLOGY
    Inventors: Makoto Ishikake, Toshiya Kamiyama, Masafumi Inomata, Tsuyoshi Etoh, Yukio Iwashita, Makoto Nakashima, Tatsushi Tokuyasu, Yusuke Matsunobu
  • Publication number: 20230096685
    Abstract: 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: Application
    Filed: March 5, 2021
    Publication date: March 30, 2023
    Applicants: NISSAN CHEMICAL CORPORATION, NATIONAL UNIVERSITY CORPORATION OITA UNIVERSITY
    Inventors: Taichi NAKAZAWA, Taro KINUMOTO
  • Publication number: 20220308073
    Abstract: 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: Application
    Filed: May 30, 2022
    Publication date: September 29, 2022
    Applicants: PUBLIC UNIVERSITY CORPORATION NAGOYA CITY UNIVERSITY, NATIONAL UNIVERSITY CORPORATION OITA UNIVERSITY
    Inventors: Makoto Michikawa, Hiroyasu Akatsu, Mohammad Abdullah, Etsuro Matsubara, Noriyuki Kimura
  • Publication number: 20220119265
    Abstract: 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: Application
    Filed: February 26, 2020
    Publication date: April 21, 2022
    Applicants: SEKISUI CHEMICAL CO., LTD., OITA UNIVERSITY
    Inventors: Hiroji FUKUI, Akira NAKASUGA, Masahiro TOYODA
  • Patent number: 11292794
    Abstract: 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: Grant
    Filed: February 14, 2020
    Date of Patent: April 5, 2022
    Assignee: Oita University Institute of Advanced Medicine, Inc.
    Inventors: Hiroyuki Kouji, Kentaro Yamada, Akira Katoh, Toshimasa Ishizaki, Shigeru Matsuoka, Akira Nishizono, Tadashi Mishina, Atsushi Yoshimori
  • Publication number: 20210395840
    Abstract: 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: Application
    Filed: January 27, 2021
    Publication date: December 23, 2021
    Applicants: SHIMADZU CORPORATION, National University Corporation Tokyo Medical and Dental University, Nihon Techno Service Co., Ltd., National University Corporation Oita University, RIKEN, Toho University
    Inventors: Masamitsu SHIKATA, Kenji NINOMIYA, Norio SHIMIZU, Hiroshi TAKASE, Manabu MOCHIZUKI, Yasuhiro TOMARU, Satoko NAKANO, Sunao SUGITA, Takashi SUZUKI
  • Publication number: 20210287395
    Abstract: 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: Application
    Filed: May 28, 2021
    Publication date: September 16, 2021
    Applicants: OLYMPUS CORPORATION, National University Corporation OITA UNIVERSITY, Fukuoka Institute of Technology
    Inventors: Makoto Ishikake, Toshiya Kamiyama, Masafumi Inomata, Tsuyoshi Etoh, Yukio Iwashita, Makoto Nakashima, Tatsushi Tokuyasu, Yusuke Matsunobu
  • Publication number: 20210206998
    Abstract: 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: Application
    Filed: April 12, 2019
    Publication date: July 8, 2021
    Applicants: DAIKIN INDUSTRIES, LTD., NATIONAL UNIVERSITY CORPORATION OITA UNIVERSITY
    Inventors: Tsutomu KOBAYASHI, Atsushi SHIRAI, Yosuke KISHIKAWA, Seiji UJIIE, Shiori TOMITAKA
  • Publication number: 20200224365
    Abstract: 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: Application
    Filed: March 12, 2018
    Publication date: July 16, 2020
    Applicant: NATIONAL UNIVERSITY CORPORATION OITA UNIVERSITY
    Inventor: Taro KINUMOTO
  • Patent number: 10658126
    Abstract: 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: Grant
    Filed: December 19, 2014
    Date of Patent: May 19, 2020
    Assignees: SEKISUI CHEMICAL CO., LTD., OITA UNIVERSITY
    Inventors: Akihiko Fujiwara, Shoji Nozato, Akira Nakasuga, Shunji Hyodo, Hiroshi Yoshitani, Masahiro Toyoda
  • Patent number: 10508709
    Abstract: 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: Grant
    Filed: September 29, 2017
    Date of Patent: December 17, 2019
    Assignees: AISIN AW CO., LTD., NATIONAL UNIVERSITY CORPORATION OITA UNIVERSITY, Kagoshima University
    Inventors: Yoichi Oi, Masaki Wajima, Hiroki Nagai, Takao Sakamoto, Takahiro Ryu, Takashi Nakae, Kenichiro Matsuzaki
  • Patent number: 10458775
    Abstract: 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: Grant
    Filed: March 2, 2016
    Date of Patent: October 29, 2019
    Assignees: NETUREN CO., LTD., OITA UNIVERSITY
    Inventors: Yoshitaka Misaka, Kazuhiro Kawasaki, Kenta Sakurai, Yuji Gotoh
  • Publication number: 20190226552
    Abstract: 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: Application
    Filed: September 29, 2017
    Publication date: July 25, 2019
    Applicants: AISIN AW CO., LTD., NATIONAL UNIVERSITY CORPORATION OITA UNIVERSITY, Kagoshima University
    Inventors: Yoichi OI, Masaki WAJIMA, Hiroki NAGAI, Takao SAKAMOTO, Takahiro RYU, Takashi NAKAE, Kenichiro MATSUZAKI
  • Patent number: 10284075
    Abstract: 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: Grant
    Filed: August 1, 2018
    Date of Patent: May 7, 2019
    Assignees: RICOH ELECTRONIC DEVICES CO., LTD., NATIONAL UNIVERSITY CORPORATION OITA UNIVERSITY
    Inventors: Shohtaroh Sohma, Yuji Takeyama, Kimihiro Nishijima
  • Publication number: 20190058323
    Abstract: 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: Application
    Filed: August 1, 2018
    Publication date: February 21, 2019
    Applicants: RICOH ELECTRONIC DEVICES CO., LTD., NATIONAL UNIVERSITY CORPORATION OITA UNIVERSITY
    Inventors: Shohtaroh SOHMA, Yuji TAKEYAMA, Kimihiro NISHIJIMA
  • Patent number: 10192669
    Abstract: 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: Grant
    Filed: November 21, 2014
    Date of Patent: January 29, 2019
    Assignees: TOSHIBA INDUSTRIAL PRODUCTS & SYSTEMS CORPORATION, NATIONAL UNIVERSITY CORPORATION OITA UNIVERSITY
    Inventors: Masato Enokizono, Hiromu Shiota, Eiji Shimomura, Tsuyoshi Masuda
  • Publication number: 20180187744
    Abstract: 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: Application
    Filed: July 15, 2016
    Publication date: July 5, 2018
    Applicants: AISIN AW CO., LTD., NATIONAL UNIVERSITY CORPORATION OITA UNIVERSITY, KAGOSHIMA UNIVERSITY
    Inventors: Yoshihiro TAKIKAWA, Hiroki NAGAI, Masaki WAJIMA, Takao SAKAMOTO, Takahiro RYU, Takashi NAKAE, Kenichiro MATSUZAKI
  • Patent number: 9962683
    Abstract: 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: Grant
    Filed: September 9, 2015
    Date of Patent: May 8, 2018
    Assignees: Kyoto University, OITA UNIVERSITY, KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
    Inventors: Hiroshi Kitagawa, Kohei Kusada, Hirokazu Kobayashi, Katsutoshi Nagaoka, Katsutoshi Sato, Syo Matsumura, Tomokazu Yamamoto
  • Patent number: 9960678
    Abstract: 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: Grant
    Filed: June 21, 2017
    Date of Patent: May 1, 2018
    Assignees: DENSO CORPORATION, NATIONAL UNIVERSITY CORPORATION OITA UNIVERSITY
    Inventors: Eisuke Takahashi, Masaya Takahashi, Kimihiro Nishijima
  • Patent number: 9919926
    Abstract: 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: Grant
    Filed: March 4, 2014
    Date of Patent: March 20, 2018
    Assignees: SEKISUI CHEMICAL CO., LTD., OITA UNIVERSITY
    Inventors: Takuya Wada, Akira Nakasuga, Masahiro Toyoda