Patents by Inventor Kazuhiko Matsumoto
Kazuhiko Matsumoto 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: 12191730Abstract: The in-vehicle structure of an inverter includes an inverter and a side member. The inverter has a first high-voltage bus bar whose position in the front-rear direction of the vehicle does not overlap with a low rigidity portion and overlaps with a high rigidity portion.Type: GrantFiled: March 4, 2020Date of Patent: January 7, 2025Assignee: NISSAN MOTOR CO., LTD.Inventors: Daisuke Asakura, Kazuhiko Matsumoto
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Patent number: 12072313Abstract: A graphene transistor includes a graphene layer including at least one sheet of graphene, a drain electrode and a source electrode each electrically connected to the graphene layer, a charge donor on at least one main surface of the graphene layer, the charge donor including an impurity charge, and a counter ion having a charge with a sign different from a sign of the impurity charge.Type: GrantFiled: August 17, 2021Date of Patent: August 27, 2024Assignees: MURATA MANUFACTURING CO., LTD., OSAKA UNIVERSITYInventors: Naruto Miyakawa, Ayumi Shinagawa, Shota Ushiba, Masahiko Kimura, Kazuhiko Matsumoto, Takao Ono
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Patent number: 12021472Abstract: A motor control method controls a motor having windings of a plurality of phases and a cooling water channel. The motor control calculates an estimated maximum temperature of the winding of the phase that reaches a highest temperature from among the windings of the plurality of phases based on the input electrical power when the motor is in a lock state. The motor control further calculates an offset value based on a detected temperature of the windings and a detected temperature of the cooling water, and corrects the estimated maximum temperature based on the temperature of the windings and the offset value. The motor control further controls the input electrical power according to the estimated maximum temperature.Type: GrantFiled: May 17, 2021Date of Patent: June 25, 2024Assignee: Nissan Motor Co., Ltd.Inventors: Tomoaki Kaimori, Kazuhiko Matsumoto, Kazuhiro Matsumura
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Publication number: 20240003844Abstract: A biosensor is a field-effect transistor-based biosensor including an insulating substrate, and a measurement sensor and a reference sensor on the insulating substrate. A probe molecule is in the measurement sensor. The probe molecule has a first basic moiety in the measurement sensor, and a recognition moiety with a first end bound to the first basic moiety and a second end defining a distal end of the probe molecule. A second basic moiety is in the reference sensor and has a same structure as that of the first basic moiety of the probe molecule in the measurement sensor. The recognition moiety of the probe molecule in the measurement sensor is absent at the distal end of the second basic moiety.Type: ApplicationFiled: September 14, 2023Publication date: January 4, 2024Inventors: Yasuo SUZUKI, Shota USHIBA, Naruto MIYAKAWA, Takao ONO, Kazuhiko MATSUMOTO
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Publication number: 20230361713Abstract: A motor control method controls a motor having windings of a plurality of phases and a cooling water channel. The motor control calculates an estimated maximum temperature of the winding of the phase that reaches a highest temperature from among the windings of the plurality of phases based on the input electrical power when the motor is in a lock state. The motor control further calculates an offset value based on a detected temperature of the windings and a detected temperature of the cooling water, and corrects the estimated maximum temperature based on the temperature of the windings and the offset value. The motor control further controls the input electrical power according to the estimated maximum temperature.Type: ApplicationFiled: May 17, 2021Publication date: November 9, 2023Inventors: Tomoaki KAIMORI, Kazuhiko MATSUMOTO, Kazuhiro MATSUMURA
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Publication number: 20210372966Abstract: A graphene transistor includes a graphene layer including at least one sheet of graphene, a drain electrode and a source electrode each electrically connected to the graphene layer, a charge donor on at least one main surface of the graphene layer, the charge donor including an impurity charge, and a counter ion having a charge with a sign different from a sign of the impurity charge.Type: ApplicationFiled: August 17, 2021Publication date: December 2, 2021Inventors: Naruto MIYAKAWA, Ayumi SHINAGAWA, Shota USHIBA, Masahiko KIMURA, Kazuhiko MATSUMOTO, Takao ONO
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Patent number: 11174881Abstract: A pressure resistant device includes a tubular main body portion, a lid portion having a wall portion joined to the main body portion, a positioning portion provided to oppose an inner peripheral surfaces of the main body portion and the wall portion, and a groove portion formed on the inner peripheral surface, and the positioning portion is provided to oppose an edge of the groove portion.Type: GrantFiled: September 27, 2018Date of Patent: November 16, 2021Assignee: KYB CORPORATIONInventors: Toshio Kobayashi, Kazuhiko Matsumoto, Norifumi Imai, Takahiro Hikasa
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Publication number: 20210079937Abstract: A pressure resistant device includes a tubular main body portion, a lid portion having a wall portion joined to the main body portion, a positioning portion provided to oppose an inner peripheral surfaces of the main body portion and the wall portion, and a groove portion formed on the inner peripheral surface, and the positioning portion is provided to oppose an edge of the groove portion.Type: ApplicationFiled: September 27, 2018Publication date: March 18, 2021Applicant: KYB CorporationInventors: Toshio KOBAYASHI, Kazuhiko MATSUMOTO, Norifumi IMAI, Takahiro HIKASA
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Publication number: 20190128291Abstract: A pressure resistant apparatus includes a cylindrical body portion, and a lid portion having an annular wall portion, end portions of the body portion and the wall portion being joined to each other to close an opening of the body portion by the lid portion, wherein an annular first groove portion is formed to extend in a peripheral direction on at least one of inner peripheral surfaces of the body portion and the wall portion, and an inner diameter of the first groove portion is larger than inner diameters of the body portion and the end portion of the wall portion.Type: ApplicationFiled: April 13, 2017Publication date: May 2, 2019Applicant: KYB CorporationInventors: Toshio KOBAYASHI, Kazuhiko MATSUMOTO, Norifumi IMAI, Takahiro HIKASA
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Patent number: 9825161Abstract: Provided is a logical operation element that performs logical operations on three or more inputs using a single unique device. The logical operation element 30 is provided with an electrode 5A and the other electrode 5B that are provided to have a nanogap, a metal nanoparticle 7 arranged between the electrode 5A and the other electrode 5B in insulated state, and a plurality of gate electrodes 5C, 5D, 11, 11A, 11B for adjusting a charge of the metal nanoparticle 7. Electric current that flows between the electrode 5A and the other electrode 5B is controlled in accordance with the voltage applied to three or more of the gate electrodes 5C, 5D, 11, 11A, 11B.Type: GrantFiled: March 9, 2014Date of Patent: November 21, 2017Assignee: JAPAN SCIENCE AND TECHNOLOGY AGENCYInventors: Yutaka Majima, Toshiharu Teranishi, Kazuhiko Matsumoto, Kenzo Maehashi, Tomofumi Susaki, Yasuhide Ohno, Kosuke Matsuzaki, Guillaume Hubert Frederic Hackenberger
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Patent number: 9566861Abstract: During turning of a vehicle, a vehicle body deceleration due to a cornering drag is obtained. An electronically controlled coupling is controlled to give, to rear wheels, a pre-torque set to be larger as the vehicle body deceleration is larger. Also, the pre-torque is restricted by an upper limit of the pre-torque that is set to be lower as a differential rotational speed of the front and rear wheels is smaller. By giving the pre-torque to the rear wheels, if a shift condition for a four-wheel drive state is established subsequently, a driving force can be generated in the rear wheels substantially at the same time that a fastening force of the electronically controlled coupling is increased, thereby the shift to the four-wheel drive state is immediately completed. Consequently, delay in response is not generated in the shift.Type: GrantFiled: June 22, 2012Date of Patent: February 14, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshihiro Ikushima, Hiroyuki Shimokasa, Koichi Hasegawa, Kazuhiko Matsumoto, Makoto Arimoto
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Patent number: 9506892Abstract: A sensor capable of detecting detection targets that are necessary to be detected with high sensitivity is provided. It comprises a field-effect transistor 1A having a substrate 2, a source electrode 4 and a drain electrode 5 provided on said substrate 2, and a channel 6 forming a current path between said source electrode 4 and said drain electrode 5; wherein said field-effect transistor 1A comprises: an interaction-sensing gate 9 for immobilizing thereon a specific substance 10 that is capable of selectively interacting with the detection targets; and a gate 7 applied a voltage thereto so as to detect the interaction by the change of the characteristic of said field-effect transistor 1A.Type: GrantFiled: June 12, 2014Date of Patent: November 29, 2016Assignee: JAPAN SCIENCE AND TECHNOLOGY AGENCYInventors: Kazuhiko Matsumoto, Atsuhiko Kojima, Satoru Nagao, Masanori Katou, Yutaka Yamada, Kazuhiro Nagaike, Yasuo Ifuku, Hiroshi Mitani
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Publication number: 20160126595Abstract: A molten salt battery is provided which includes a positive electrode including a positive-electrode active material represented by the general formula: An(1?x)M1nxFe1?yM2yP2O7 (wherein n is 1 or 2, 0?x?0.5, 0?y?0.5, A is an alkali metal element, M1 is an element other than the element A, M2 is an element other than Fe), a negative electrode including a negative-electrode active material, a separator interposed between the positive electrode and the negative electrode, and a molten salt electrolyte. The molten salt electrolyte contains 90% by mass or more of an ionic liquid containing a salt of the element A.Type: ApplicationFiled: February 21, 2014Publication date: May 5, 2016Inventors: Atsushi FUKUNAGA, Koji NITTA, Shoichiro SAKAI, Koma NUMATA, Eiko IMAZAKI, Rika HAGIWARA, Toshiyuki NOHIRA, Kazuhiko MATSUMOTO
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Patent number: 9260306Abstract: A novel method for purifying hydrogen fluoride, capable of efficiently reducing the content of arsenic in hydrogen fluoride. The method includes the steps of (a) bringing a crude hydrogen fluoride containing arsenic trifluoride into contact with an oxidizing agent of a metal fluoride in a liquid state in a reactor to obtain a reaction mixture, wherein arsenic pentafluoride is formed by oxidizing arsenic trifluoride with the oxidizing agent of the metal fluoride through a liquid-liquid reaction; and (b) separating purified hydrogen fluoride from the reaction mixture by a separator, the thus obtained purified hydrogen fluoride having a lower content of arsenic than that of the crude hydrogen fluoride.Type: GrantFiled: November 25, 2009Date of Patent: February 16, 2016Assignee: KYOTO UNIVERSITYInventors: Rika Hagiwara, Kazuhiko Matsumoto
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Publication number: 20160027908Abstract: Provided is a logical operation element that performs logical operations on three or more inputs using a single unique device. The logical operation element 30 is provided with an electrode 5A and the other electrode 5B that are provided to have a nanogap, a metal nanoparticle 7 arranged between the electrode 5A and the other electrode 5B in insulated state, and a plurality of gate electrodes 5C, 5D, 11, 11A, 11B for adjusting a charge of the metal nanoparticle 7. Electric current that flows between the electrode 5A and the other electrode 5B is controlled in accordance with the voltage applied to three or more of the gate electrodes 5C, 5D, 11, 11A, 11B.Type: ApplicationFiled: March 9, 2014Publication date: January 28, 2016Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCYInventors: Yutaka Majima, Toshiharu Teranishi, Kazuhiko Matsumoto, Kenzo Maehashi, Tomofumi Susaki, Yasuhide Ohno, Kosuke Matsuzaki, Guillaume Hubert Frederic Hackenberger
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Patent number: 9240561Abstract: This invention is to provide a nanodevice, which is combined with an electronic device such as a diode, tunnel device and MOS transistor, integrated circuit and manufacturing method of the nanodevice. A nanodevice includes: a first insulating layer 2; one electrode 5A and the other electrode 5B provided to have a nanogap on the first insulating layer 2; a metal nanoparticle or a functional molecule provided between the one electrode 5A and the other electrode 5B; a second insulating layer 8 provided on the first insulating layer 2, and on the one electrode 5A and the other electrode 5B to embed the metal nanoparticle or the functional molecule. The second insulating layer works as a passivating layer.Type: GrantFiled: February 27, 2013Date of Patent: January 19, 2016Assignee: JAPAN SCIENCE AND TECHNOLOGY AGENCYInventors: Yutaka Majima, Toshiharu Teranishi, Kazuhiko Matsumoto, Kenzo Maehashi, Yasuo Azuma, Yasuhide Ohno, Kosuke Maeda, Guillaume Hackenberger
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Patent number: 9236488Abstract: A thin film transistor is equipped with a silicon substrate, a channel layer, a source electrode and a drain electrode. The channel layer, the source electrode and the drain electrode are arranged on the main surface of the silicon substrate. The channel layer is composed of multiple carbon nanowall thin films, wherein the multiple carbon nanowall thin films are arranged in parallel to each other between the source electrode and the drain electrode, one end of each of the multiple carbon nanowall thin films is in contact with the source electrode, and the other end of each of the multiple carbon nanowall thin films is in contact with the drain electrode. An insulating film and a gate electrode are arranged on the rear surface side of the silicon substrate.Type: GrantFiled: August 23, 2012Date of Patent: January 12, 2016Assignees: CHUBU UNIVERSITY EDUCATIONAL FOUNDATION, NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY, OSAKA UNIVERSITY, NISSIN ELECTRIC CO., LTD.Inventors: Toshio Kawahara, Kazumasa Okamoto, Kazuhiko Matsumoto, Risa Utsunomiya, Teruaki Matsuba, Hitoshi Matsumoto
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Publication number: 20150229001Abstract: As a molten salt composition lacking a clear melting point and including a molten salt that can be suitably used as an electrolytic solution of a secondary battery, there is provided a molten salt composition including a mixture of two or more kinds of molten salts which can be used as an electrolytic solution of a secondary battery. Particularly, provided is a molten salt composition comprising two kinds of molten salts each having cations with ion diameters different from each other, composition ratio being set to a composition ratio within a range in which the molten salt composition lacks a melting point. Also provided is a secondary battery including the molten salt composition as an electrolytic solution, which can maintains an available state even when the temperature becomes low without rapidly becoming unavailable.Type: ApplicationFiled: August 12, 2013Publication date: August 13, 2015Inventors: Eiko Itani, Shinji Inazawa, Koji Nitta, Shouichirou Sakai, Atsushi Fukunaga, Koma Numata, Rika Hagiwara, Toshiyuki Nohira, Kazuhiko Matsumoto
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Publication number: 20150221779Abstract: A thin film transistor is equipped with a silicon substrate, a channel layer, a source electrode and a drain electrode. The channel layer, the source electrode and the drain electrode are arranged on the main surface of the silicon substrate. The channel layer is composed of multiple carbon nanowall thin films, wherein the multiple carbon nanowall thin films are arranged in parallel to each other between the source electrode and the drain electrode, one end of each of the multiple carbon nanowall thin films is in contact with the source electrode, and the other end of each of the multiple carbon nanowall thin films is in contact with the drain electrode. An insulating film and a gate electrode are arranged on the rear surface side of the silicon substrate.Type: ApplicationFiled: August 23, 2012Publication date: August 6, 2015Applicants: CHUBU UNIVERSITY EDUCATIONAL FOUNDATION, NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY, OSAKA UNIVERSITY, NISSIN ELECTRIC CO., LTD.Inventors: Toshio Kawahara, Kazumasa Okamoto, Kazuhiko Matsumoto, Risa Utsunomiya, Teruaki Matsuba, Hitoshi Matsumoto
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Patent number: 9082292Abstract: Disclosed is a display apparatus which is used so as to produce a hardware remote controller capable of operating a plurality of instruments. The display apparatus includes a first display part which displays remote control information including external shape information of a remote control of a target instrument to be operated, and a second display part which displays a custom remote control object to be generated on the basis of the external shape information. The remote control information is acquired from a remote control database which includes external shape information of remote controls of the plurality of instruments on the basis of instrument information of the target instrument and/or the remote control of the target instrument.Type: GrantFiled: May 2, 2013Date of Patent: July 14, 2015Assignee: PITA4 Mobile LLCInventor: Kazuhiko Matsumoto