Patents by Inventor Keiji Kondo

Keiji Kondo 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).

  • Publication number: 20220255377
    Abstract: A rotor for a rotating electric machine includes a rotor core provided with a pair of first magnets and a pair of second magnets that are located closer than the first magnets to an outer peripheral side of the rotor core. The rotor core includes a caulking portion disposed in a region between first and second imaginary lines in a radial direction of the rotor core. The first imaginary line is an arc passing through outer-peripheral-side end portions of respective long sides of rectangular-shaped cross sections of the first magnets. The second imaginary line is an arc passing through inner-peripheral-side end portions of respective long sides of rectangular-shaped cross sections of the second magnets. The arc of each of the first and second imaginary lines has a center of curvature that lies at an intersection of extensions of the long sides of the rectangular-shaped cross sections of the second magnets.
    Type: Application
    Filed: February 8, 2022
    Publication date: August 11, 2022
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Toshinori OKOCHI, Keiji KONDO, Yoshizumi KITAHARA
  • Publication number: 20220216751
    Abstract: A rotor to be provided in a rotating electric machine. The rotor includes a rotor core provided with a pair of flux barriers and a void portion. A pair of magnets are provided in the pair of flux barriers. Each of the pair of magnets has a rectangular shape in its cross section. The void portion is located on an inner peripheral side than an imaginary line connecting between inner-peripheral-side corners of the pair of magnets. A first width is defined by a shortest distance between the pair of flux barriers. A second width is defined by a distance from the void portion to an intersection point at which the imaginary line intersects with a shortest line segment whose length corresponds to a shortest distance between one of the pair of magnets and the void portion. The second width is smaller than the first width.
    Type: Application
    Filed: November 3, 2021
    Publication date: July 7, 2022
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Toshinori OKOCHI, Keiji KONDO, Yoshizumi KITAHARA
  • Patent number: 11223311
    Abstract: In a rotary electric machine, a rotor, and a stator. The stator includes slots provided in a circumferential direction thereof, and stator windings wound in the slots. The stator windings include n groups of three-phase windings, where n is a power of 2. The slots include first slots each accommodating portions of same-group and same-phase windings in the n groups of three-phase windings. The energizing directions of the same-group and same-phase windings are identical to each other. The second slots each accommodate different-group and same-phase windings in the n groups of three-phase windings. The first slots and the second slots are arranged in the stator at predetermined intervals in a circumferential direction of the stator, and the three-phase windings of each group are wound around the stator with regular intervals therebetween.
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: January 11, 2022
    Assignee: DENSO CORPORATION
    Inventors: Hirofumi Kinjo, Toru Wakimoto, Makoto Taniguchi, Keiji Kondo, Jun Ishida, Tomoya Takahashi
  • Patent number: 10960769
    Abstract: In an onboard charging apparatus, a plurality of main electric-power storage apparatuses are connected in series to one another. A main electric-power storage apparatus on a lowest potential side of the main electric-power storage apparatuses is a lowest potential electric-power storage apparatus. The lowest potential electric-power storage apparatus has a nominal voltage that is set to 12 V, and supplies electric power to an electrical component mounted to a vehicle. In the onboard charging apparatus, a connecting unit selectively connects, by switching control, the output terminal and any of high potential side terminals of the main electric-power storage apparatuses. A switching control unit controls switching of the connecting unit to switch the high potential side terminal selected as a connection destination of the output terminal among the high potential side terminals of the main electric-power storage apparatuses, based on an output voltage of the output terminal.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: March 30, 2021
    Assignee: DENSO CORPORATION
    Inventors: Keiji Kondo, Makoto Taniguchi, Asaka Kimura
  • Publication number: 20200259377
    Abstract: A rotor has a plurality of magnetic poles aligned in a circumferential direction, each magnetic pole includes a first magnet equipment portion and a second magnet equipment portion positioned more toward an inner circumferential side than the first magnet equipment portion, the second magnet equipment portion has a pair of inner magnet holes placed symmetrically with respect to a center of the magnetic pole, and one or more inner magnets equipped in each of the inner magnet holes, each inner magnet hole has a bent line shape with one or more points of bending in an axial direction view, and an end, on a center side in a circumferential side of the magnetic pole, of the inner magnet hole is expanded on both sides in a thickness direction thereof, and functions as a magnetic barrier having a larger thickness than the inner magnet.
    Type: Application
    Filed: January 24, 2020
    Publication date: August 13, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Suguru Gangi, Shinya Sano, Yasuhide Yagyu, Takanori Kadota, Keiji Kondo
  • Patent number: 10644621
    Abstract: A rotating electric machine apparatus includes a rotating electric machine and a full-bridge inverter. The full-bridge inverter includes first high-side switches, first low-side switches, second high-side switches, and second low-side switches. The rotating electric machine apparatus includes: first and second neutral point switches; a full-wave driving unit that performs a full-wave driving process in which switching control of the switches is performed in a state in which the first and second neutral point switches are turned off; a half-wave driving unit that performs a half-wave driving process in which switching control of the first high-side switches and the second low-side switches is performed in a state in which the first and second neutral point switches are turned on, and the first low-side switches and the second high-side switches are turned off; and an executing unit that selects and performs either of the full-wave driving process and the half-wave driving process.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: May 5, 2020
    Assignee: DENSO CORPORATION
    Inventors: Asaka Kimura, Makoto Taniguchi, Keiji Kondo
  • Publication number: 20200052638
    Abstract: In a rotary electric machine, a rotor, and a stator. The stator includes slots provided in a circumferential direction thereof, and stator windings wound in the slots. The stator windings include n groups of three-phase windings, where n is a power of 2. The slots include first slots each accommodating portions of same-group and same-phase windings in the n groups of three-phase windings. The energizing directions of the same-group and same-phase windings are identical to each other. The second slots each accommodate different-group and same-phase windings in the n groups of three-phase windings. The first slots and the second slots are arranged in the stator at predetermined intervals in a circumferential direction of the stator, and the three-phase windings of each group are wound around the stator with regular intervals therebetween.
    Type: Application
    Filed: October 10, 2019
    Publication date: February 13, 2020
    Applicant: DENSO CORPORATION
    Inventors: Hirofumi KINJO, Toru WAKIMOTO, Makoto TANIGUCHI, Keiji KONDO, Jun ISHIDA, Tomoya TAKAHASHI
  • Publication number: 20190238073
    Abstract: A rotating electric machine apparatus includes a rotating electric machine and a full-bridge inverter. The full-bridge inverter includes first high-side switches, first low-side switches, second high-side switches, and second low-side switches. The rotating electric machine apparatus includes: first and second neutral point switches; a full-wave driving unit that performs a full-wave driving process in which switching control of the switches is performed in a state in which the first and second neutral point switches are turned off; a half-wave driving unit that performs a half-wave driving process in which switching control of the first high-side switches and the second low-side switches is performed in a state in which the first and second neutral point switches are turned on, and the first low-side switches and the second high-side switches are turned off; and an executing unit that selects and performs either of the full-wave driving process and the half-wave driving process.
    Type: Application
    Filed: July 13, 2017
    Publication date: August 1, 2019
    Applicant: DENSO CORPORATION
    Inventors: Asaka KIMURA, Makoto TANIGUCHI, Keiji KONDO
  • Patent number: 10027252
    Abstract: A rotating electric machine system includes a rotating electric machine and an electric power conversion circuit. The rotating electric machine includes N coils connected with each other to define a neutral point therebetween. The electric power conversion circuit includes N high-side switches, N low-side switches, a selector switch, a full-wave driver, a half-wave driver and a drive controller. The full-wave driver performs a full-wave drive process with high potential-side terminals of the low-side switches respectively connected with low potential-side terminals of the high-side switches by the selector switch. The half-wave driver performs a half-wave drive process with the high potential-side terminals of the low-side switches connected with the neutral point by the selector switch.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: July 17, 2018
    Assignee: DENSO CORPORATION
    Inventors: Makoto Taniguchi, Asaka Kimura, Keiji Kondo
  • Patent number: 9976314
    Abstract: A method for manufacturing a concrete structure comprises an installation step of installing a formwork 30 for concrete placement, a placement step of performing concrete placement in a state where a curing sheet 10 is attached to an inner surface of the formwork 30, and a demolding step of removing the formwork 30 after placement of concrete C. A contact angle of a contact surface of the curing sheet 10 for use in the placement step with water is 50 degrees or more, wherein the contact surface faces the concrete. Thus, generation of bleeding water is suppressed.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: May 22, 2018
    Assignee: KAJIMA CORPORATION
    Inventors: Noboru Sakata, Kenzo Watanabe, Tatsuya Nukushina, Goro Sakai, Shuji Yanai, Kosuke Yokozeki, Mitsunori Iwata, Kazunori Nishioka, Keiji Kondo, Taizo Goda, Shusaku Hirata
  • Publication number: 20180022224
    Abstract: In an onboard charging apparatus, a plurality of main electric-power storage apparatuses are connected in series to one another. A main electric-power storage apparatus on a lowest potential side of the main electric-power storage apparatuses is a lowest potential electric-power storage apparatus. The lowest potential electric-power storage apparatus has a nominal voltage that is set to 12 V, and supplies electric power to an electrical component mounted to a vehicle. In the onboard charging apparatus, a connecting unit selectively connects, by switching control, the output terminal and any of high potential side terminals of the main electric-power storage apparatuses. A switching control unit controls switching of the connecting unit to switch the high potential side terminal selected as a connection destination of the output terminal among the high potential side terminals of the main electric-power storage apparatuses, based on an output voltage of the output terminal.
    Type: Application
    Filed: July 24, 2017
    Publication date: January 25, 2018
    Applicant: DENSO CORPORATION
    Inventors: Keiji KONDO, Makoto TANIGUCHI, Asaka KIMURA
  • Publication number: 20180019687
    Abstract: A rotating electric machine system includes a rotating electric machine and an electric power conversion circuit. The rotating electric machine includes N coils connected with each other to define a neutral point therebetween. The electric power conversion circuit includes N high-side switches, N low-side switches, a selector switch, a full-wave driver, a half-wave driver and a drive controller. The full-wave driver performs a full-wave drive process with high potential-side terminals of the low-side switches respectively connected with low potential-side terminals of the high-side switches by the selector switch. The half-wave driver performs a half-wave drive process with the high potential-side terminals of the low-side switches connected with the neutral point by the selector switch.
    Type: Application
    Filed: July 17, 2017
    Publication date: January 18, 2018
    Applicant: DENSO CORPORATION
    Inventors: Makoto TANIGUCHI, Asaka KIMURA, Keiji KONDO
  • Publication number: 20150375420
    Abstract: A method for manufacturing a concrete structure comprises an installation step of installing a formwork 30 for concrete placement, a placement step of performing concrete placement in a state where a curing sheet 10 is attached to an inner surface of the formwork 30, and a demolding step of removing the formwork 30 after placement of concrete C. A contact angle of a contact surface of the curing sheet 10 for use in the placement step with water is 50 degrees or more, wherein the contact surface faces the concrete. Thus, generation of bleeding water is suppressed.
    Type: Application
    Filed: February 14, 2014
    Publication date: December 31, 2015
    Inventors: Noboru SAKATA, Kenzo WATANABE, Tatsuya NUKUSHINA, Goro SAKAI, Shuji YANAI, Kosuke YOKOZEKI, Mitsunori IWATA, Kazunori NISHIOKA, Keiji KONDO, Taizo GODA, Shusaku HIRATA
  • Patent number: 8610326
    Abstract: A stator which may be employed in an electric rotating machine. The stator includes a stator winding which includes in-slot portions disposed in slots of a stator core. The in-slot portions are arrayed in each of the slots in a form of multiple layers aligned in a radial direction of the stator core. The stator winding is made up of a first winding and a second winding which are connected together through a joint. The first winding is defined by a portion of the stator winding between the joint and an end of the stator winding which is to be connected to an external. The second winding includes the in-slot portion placed within at least one of the slots as an outermost layer that is one of the layers placed most outwardly in the radial direction of the stator core. This results in a great decrease in leakage current.
    Type: Grant
    Filed: January 5, 2011
    Date of Patent: December 17, 2013
    Assignee: Denso Corporation
    Inventors: Akira Fukushima, Keiji Kondo, Akito Akimoto, Takeo Maekawa, Makoto Taniguchi, Shin Kusase
  • Publication number: 20110163625
    Abstract: A stator which may be employed in an electric rotating machine. The stator includes a stator winding which includes in-slot portions disposed in slots of a stator core. The in-slot portions are arrayed in each of the slots in a form of multiple layers aligned in a radial direction of the stator core. The stator winding is made up of a first winding and a second winding which are connected together through a joint. The first winding is defined by a portion of the stator winding between the joint and an end of the stator winding which is to be connected to an external. The second winding includes the in-slot portion placed within at least one of the slots as an outermost layer that is one of the layers placed most outwardly in the radial direction of the stator core. This results in a great decrease in leakage current.
    Type: Application
    Filed: January 5, 2011
    Publication date: July 7, 2011
    Applicant: DENSO CORPORATION
    Inventors: Akira FUKUSHIMA, Keiji Kondo, Akito Akimoto, Takeo Maekawa, Makoto Taniguchi, Shin Kusase
  • Publication number: 20100080862
    Abstract: It is intended to provide compositions and foods for use in the treatment, prophylaxis, or amelioration of diseases or symptoms which can be treated, prevented or ameliorated by activating PPAR, in particular, insulin resistant diabetes and hyperlipidemia. Namely, medicinal compositions usable in treating, preventing or improving diseases or symptoms which can be treated, prevented or ameliorated by activation PPAR which contain humulones, isohumulones or lupulones or pharmaceutically acceptable salts or solvates thereof.
    Type: Application
    Filed: September 10, 2009
    Publication date: April 1, 2010
    Inventors: Hiroaki YAJIMA, Yutaka Miura, Daisuke Fujiwara, Hideharu Odai, Keiji Kondo, Hajime Nozawa
  • Patent number: 7195915
    Abstract: Protein synthesis inhibitor resistance genes (typified by a cycloheximide resistance gene) are capable of imparting resistance to a protein synthesis inhibitor (typified by cycloheximide) to animal cells sensitive to the inhibitor. The genes have a sequence mutated by substitution in a gene encoding a ribosome-constituting protein derived from an animal. The genes may be placed in recombinant vectors, including expression vectors containing the gene together with a foreign protein structural gene.
    Type: Grant
    Filed: November 23, 2005
    Date of Patent: March 27, 2007
    Assignee: Kirin Beer Kabushiki Kaisha
    Inventors: Elisa Misawa, Hiroaki Yajima, Keiji Kondo
  • Publication number: 20060233902
    Abstract: It is intended to provide compositions and foods for use in the treatment, prophylaxis, or amelioration of diseases or symptoms which can be treated, prevented or ameliorated by activating PPAR, in particular, insulin resistant diabetes and hyperlipidemia. Namely, medicinal compositions usable in treating, preventing or improving diseases or symptoms which can be treated, prevented or ameliorated by activation PPAR which contain humulones, isohumulones or lupulones or pharmaceutically acceptable salts or solvates thereof.
    Type: Application
    Filed: February 14, 2003
    Publication date: October 19, 2006
    Applicant: Kirin Beer Kabushiki Kaisha
    Inventors: Hiroaki Yajima, Yutaka Miura, Daisuke Fujiwara, Hideharu Odai, Keiji Kondo, Hajime Nozawa
  • Publication number: 20060147568
    Abstract: According to the present invention, there is provided a blood pressure-lowering agent, a vascular flexibility-ameliorating agent and foods having these functions imparted thereto, which are comprising isohumulones or a hop extract and/or an isomerized hop extract as an active ingredient.
    Type: Application
    Filed: January 16, 2004
    Publication date: July 6, 2006
    Inventors: Akihiko Takeuchi, Taku Sato, Hiroaki Yajima, Yutaka Miura, Keiji Kondo, Aruto Yoshida, Kiyoshi Yoshida, Junko Tomita
  • Patent number: 7064194
    Abstract: Protein synthesis inhibitor resistance genes (typified by a cycloheximide resistance gene) are capable of imparting resistance to a protein synthesis inhibitor (typified by cycloheximide) to animal cells sensitive to the inhibitor. The genes have a sequence mutated by substitution in a gene encoding a ribosome-constituting protein derived from an animal. The genes may be placed in recombinant vectors, including expression vectors containing the gene together with a foreign protein structural gene.
    Type: Grant
    Filed: March 8, 2002
    Date of Patent: June 20, 2006
    Assignee: Kirin Beer Kabushiki Kaisha
    Inventors: Elisa Misawa, Hiroaki Yajima, Keiji Kondo