Patents by Inventor Yoji Yamada

Yoji Yamada 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).

  • Patent number: 10367385
    Abstract: This motor includes a stator having a winding, and a rotor. The rotor rotates by being subjected to a rotating magnetic field generated when a drive current is supplied to the winding. The winding includes a first winding and a second winding. The first winding and the second winding are energized with the same timing by the drive current, and are connected in series. The rotor includes magnetic poles comprising permanent magnets, and magnetic flux permitting portions. In a rotor rotational position in which the magnetic poles oppose the first winding, the magnetic flux permitting portions oppose the second winding and permit the generation of an interlinkage magnetic flux arising as a result of a field weakening current in the second winding.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: July 30, 2019
    Assignee: DENSO CORPORATION
    Inventors: Koji Mikami, Yoji Yamada, Akihisa Hattori, Seiya Yokoyama
  • Patent number: 10326324
    Abstract: A rotor includes a first rotor core, a second rotor core, a permanent magnet and a resin layer. The first rotor core includes a first core base and first claw-shaped magnetic poles arranged at equal intervals on a peripheral portion of the first core base. The second rotor core includes a second core base and second claw-shaped magnetic poles arranged at equal intervals on a peripheral portion of the second core base. The first rotor core and the second rotor core are combined with each other so that the first and second core bases are opposed to each other and the first and second claw-shaped magnetic poles are alternately arranged in the circumferential direction of the rotor. The permanent magnet includes at least a main field magnet. The main field magnet is located between the first and second core bases in the axial direction, and is magnetized in the axial direction.
    Type: Grant
    Filed: November 24, 2017
    Date of Patent: June 18, 2019
    Assignee: DENSO CORPORATION
    Inventors: Yoji Yamada, Koji Mikami
  • Patent number: 10298078
    Abstract: A motor includes a stator having windings and a rotor. The rotor includes a rotor core and a first magnet magnetic pole, a second magnet magnetic pole, and a protrusion provided next to each other in the circumferential direction. The second magnet magnetic pole has an opposite polarity to the first magnet magnetic pole. The protrusion projects in the radial direction in the rotor core. The windings include a first winding and a second winding. The first winding and the second winding are excited at the same timing, and are serially connected. The protrusion faces the second winding at the rotor rotation position at which the first magnet magnetic pole or the second magnet magnetic pole faces the first winding.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: May 21, 2019
    Assignee: DENSO CORPORATION
    Inventors: Seiya Yokoyama, Yoji Yamada, Koji Mikami, Akihisa Hattori
  • Patent number: 10270306
    Abstract: A motor includes a stator, a rotor, and a case. The stator includes a stator core and windings. The rotor is provided inside the stator. The rotor includes first and second rotor cores and a field magnet. The first and second rotor cores each includes a core base and claw-shaped magnetic poles. The core bases are opposed to each other and the claw-shaped magnetic poles of the first and second rotor cores are alternately disposed in a circumferential direction. The field magnet is disposed between the core bases in the axial direction. The field magnet is magnetized in the axial direction so as to cause the claw-shaped magnetic poles of the first rotor core and the second rotor core to function respectively as first magnetic poles and second magnetic poles. At least part of an end part of the case in the axial direction is made of a non-magnetic body.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: April 23, 2019
    Assignee: Denso Corporation
    Inventors: Yoji Yamada, Takahiro Tsuchiya, Chie Morita
  • Publication number: 20190036399
    Abstract: A motor includes a stator having a winding, and a rotor. The rotor rotates by receiving a rotational magnetic field generated by drive current supplied to the winding. The winding includes a first winding and a second winding, the first and second windings both being excited at the same timing by the drive current. The first winding and the second winding are connected in series. The rotor includes a first pole section and a second pole section. The second pole section faces the second winding at the rotation position of the rotor at which the first pole section faces the first winding. The magnetic force exerted on the stator by the second pole section is weaker than that exerted by the first pole section.
    Type: Application
    Filed: July 19, 2016
    Publication date: January 31, 2019
    Inventors: Yoji Yamada, Koji MIKAMI, Akihisa HATTORI, Seiya YOKOYAMA
  • Publication number: 20190013708
    Abstract: A stator of a brushless motor includes a stator core and a plurality of coils. The stator core includes a base portion having an annular plate shape and a plurality of teeth protruding from one surface of the base portion in an axial direction and disposed in a circumferential direction. The plurality of coils is respectively wound by concentrated winding along peripheral surfaces of the plurality of teeth. The base portion includes an inner circumferential edge that is recessed radially outward from an inner end of each of the plurality of teeth or the base portion includes an outer circumferential edge that is recessed radially inward from an outer end of each of the plurality of teeth.
    Type: Application
    Filed: February 23, 2017
    Publication date: January 10, 2019
    Inventors: Akihisa HATTORI, Yoji YAMADA, Koji MIKAMI, Seiya YOKOYAMA
  • Publication number: 20190006898
    Abstract: A motor includes a stator having windings and a rotor. The rotor includes a rotor core and a first magnet magnetic pole, a second magnet magnetic pole, and a protrusion provided next to each other in the circumferential direction. The second magnet magnetic pole has an opposite polarity to the first magnet magnetic pole. The protrusion projects in the radial direction in the rotor core. The windings include a first winding and a second winding. The first winding and the second winding are excited at the same timing, and are serially connected. The protrusion faces the second winding at the rotor rotation position at which the first magnet magnetic pole or the second magnet magnetic pole faces the first winding.
    Type: Application
    Filed: July 19, 2016
    Publication date: January 3, 2019
    Inventors: Seiya Yokoyama, Yoji Yamada, Koji Mikami, Akihisa Hattori
  • Publication number: 20180367000
    Abstract: A motor includes a stator including windings and a rotor. The windings include a first winding and a second winding connected in series. The rotor includes a plurality of rotor parts arranged in an axial direction. Each of the rotor parts includes a first magnet pole unit including a permanent magnet and a second magnet pole unit opposing the second winding at a rotational position of the rotor where the first magnet unit opposes the first winding. The second magnet pole unit applies a weaker magnetic force to the stator than the first magnet pole unit. The rotor parts each include an equal number of magnet poles. The first magnet pole units of the rotor parts are located at positions deviated from one another in a circumferential direction. The second magnet pole units of the rotor parts are located at positions deviated from one another in the circumferential direction.
    Type: Application
    Filed: December 16, 2016
    Publication date: December 20, 2018
    Inventors: Koji MIKAMI, Yoji YAMADA, Akihisa HATTORI, Seiya YOKOYAMA
  • Publication number: 20180271739
    Abstract: A walking support robot of the present disclosure is a walking support robot that moves in accordance with a handle force while supporting walking of a user. The walking support robot includes a body, a handle that is on the body and is held by the user, a sensor that senses a force applied to the handle, and a moving device that includes a rotating member and moves the walking support robot by controlling rotation of the rotating member in accordance with the force sensed by the sensor. The walking support robot estimates a leg position of the user on a basis of a change of the force sensed by the sensor, and sets a load to be applied to the user on a basis of the leg position.
    Type: Application
    Filed: March 14, 2018
    Publication date: September 27, 2018
    Inventors: MAYU WATABE, KAZUNORI YAMADA, YOJI YAMADA
  • Publication number: 20180271786
    Abstract: Provided is an enema for rectal application containing budesonide as an active ingredient in order to treat inflammatory bowel disease, or to prevent a relapse. The enema for rectal application containing budesonide as the active ingredient, in which 1.5 to 2.5 mg of budesonide per dose is administered twice a day for 6 weeks in order to treat inflammatory bowel disease, or to prevent a relapse; the enema for rectal application described above, in which a dose of budesonide is 2.0 mg per dose; the enema for rectal application according to any one of the above, which is taken in order to treat ulcerative colitis or Crohn's disease, or to prevent a relapse; the enema for rectal application according to any one of the above, which has a foamy shape or a liquid shape.
    Type: Application
    Filed: July 21, 2015
    Publication date: September 27, 2018
    Inventors: Yoji YAMADA, Syoji KONDO, Toshifumi KAJIOKA
  • Publication number: 20180269733
    Abstract: This motor includes a stator having a winding, and a rotor. The rotor rotates by being subjected to a rotating magnetic field generated when a drive current is supplied to the winding. The winding includes a first winding and a second winding. The first winding and the second winding are energized with the same timing by the drive current, and are connected in series. The rotor includes magnetic poles comprising permanent magnets, and magnetic flux permitting portions. In a rotor rotational position in which the magnetic poles oppose the first winding, the magnetic flux permitting portions oppose the second winding and permit the generation of an interlinkage magnetic flux arising as a result of a field weakening current in the second winding.
    Type: Application
    Filed: July 19, 2016
    Publication date: September 20, 2018
    Inventors: Koji Mikami, Yoji Yamada, Akihisa Hattori, Seiya Yokoyama
  • Publication number: 20180235832
    Abstract: A walking support robot is presented by the present disclosure. The walking support robot moves in accordance with a handle load while guiding a user to walk along a walking route. The walking support robot includes a body, a handle on the body, a sensor that senses a load applied to the handle, and a moving device that moves the walking support robot by controlling rotation of a rotating member in accordance with the load. Guide information is generated for guiding the user to walk along the walking route. Presented information is presented for guiding the user based on the guide information. A physical task is set by adjusting complexity of the walking route. A degree to which the user follows the walking route is calculated, and the physical task is adjusted based on the degree.
    Type: Application
    Filed: February 17, 2018
    Publication date: August 23, 2018
    Inventors: KAZUNORI YAMADA, MAYU WATABE, MIZUHO SAKAKIBARA, KENJI MASE, YUKI ATSUMI, YOJI YAMADA
  • Publication number: 20180208926
    Abstract: The present invention aims to provide a novel nucleic acid capable of suppressing expression of ?2GPI, as well as a pharmaceutical composition for the prophylaxis or treatment of diseases associated with ?2GPI expression. The present invention solves the above-mentioned problem by providing an antisense oligonucleotide having a ?2GPI expression suppressive activity, a pharmaceutical composition containing the antisense oligonucleotide, and a prophylactic or therapeutic drug for autoimmune diseases including APS, SLE and the like, and thrombosis in hemodialysis that contains the antisense oligonucleotide and suppresses ?2GPI expression.
    Type: Application
    Filed: July 13, 2016
    Publication date: July 26, 2018
    Applicant: Kyowa Hakko Kirin Co., Ltd.
    Inventors: Yoji YAMADA, Hiroto IWAI, Kazuhiro MASUDA
  • Patent number: 10022284
    Abstract: A life assistance system includes an automatic liftable chair and an autonomous mobile robot connected to the automatic liftable chair via a network. The life assistance system assists a user in the action of standing up from the automatic liftable chair. The life assistance system is configured such that upon reception of a stand-up assist instruction by the autonomous mobile robot, the automatic liftable chair executes a first assisting action and that upon detection of a load applied to a handle of the autonomous mobile robot, the automatic liftable chair executes a second assisting action.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: July 17, 2018
    Assignee: PANASONIC CORPORATION
    Inventors: Kazunori Yamada, Mayu Yokoya, Hidetsugu Maekawa, Yoji Yamada, Pei Di
  • Publication number: 20180193471
    Abstract: The present invention provides a nucleic acid conjugate comprising: a double-stranded nucleic acid consisting of a sense strand and an antisense strand and comprising a duplex region of at least 11 base pairs; and a ligand part, wherein an oligonucleotide with a strand length of 17 to 30 nucleotides in the antisense strand is complementary to a target ?2GPI mRNA sequence, and the 3? end or 5? end of the sense strand has a ligand part represented by following formula (I), formula (II), formula (III), formula (IV) or formula (V).
    Type: Application
    Filed: July 15, 2016
    Publication date: July 12, 2018
    Applicant: Kyowa Hakko Kirin Co., Ltd.
    Inventors: Kazutaka NAGATOMO, Kazuhiro MASUDA, Minako KANDA, Yoji YAMADA, Hiroto IWAI, Asana MAKINO, Shintaro HOSOE, Takeshi KUBOYAMA, Keiji UEHARA, Yasuhiro SUZUKI
  • Patent number: 9962305
    Abstract: A living support system connected to a chair including a movable seat through a communication network includes a robot including a main body, a moving device that moves the main body in a freestanding state, a handle provided at the main body and gripped by a user, and a handle load detector that detects a handle load applied to the handle by the user; a support control device that controls seat movement for a stand-up motion of the sitting user, using the detected handle load; and a communicator that transmits support control information including a movement speed at which the chair moves the movable seat, to the chair through the communication network. The support control device includes a seat speed calculator that calculates a speed at which the movable seat is inclined with respect to a floor on which the chair is placed, as the movement speed using the detected handle load.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: May 8, 2018
    Assignee: PANASONIC CORPORATION
    Inventors: Kazunori Yamada, Yoji Yamada, Pei Di
  • Publication number: 20180076677
    Abstract: A rotor includes a first rotor core, a second rotor core, a permanent magnet and a resin layer. The first rotor core includes a first core base and first claw-shaped magnetic poles arranged at equal intervals on a peripheral portion of the first core base. The second rotor core includes a second core base and second claw-shaped magnetic poles arranged at equal intervals on a peripheral portion of the second core base. The first rotor core and the second rotor core are combined with each other so that the first and second core bases are opposed to each other and the first and second claw-shaped magnetic poles are alternately arranged in the circumferential direction of the rotor. The permanent magnet includes at least a main field magnet. The main field magnet is located between the first and second core bases in the axial direction, and is magnetized in the axial direction.
    Type: Application
    Filed: November 24, 2017
    Publication date: March 15, 2018
    Inventors: Yoji YAMADA, Chie MORITA, Seiya YOKOYAMA, Koji MIKAMI, Takahiro TSUCHIYA
  • Patent number: 9893576
    Abstract: A brushless motor includes a first rotor core, a second rotor core, and a field magnet member. The first rotor core includes primary projecting pieces arranged along a circumferential direction at equal intervals. The second rotor core has the same shape as the first rotor core, and includes secondary projecting pieces arranged along the circumferential direction at equal intervals. The secondary projecting pieces are positioned between the primary projecting pieces that are adjacent to one another in the circumferential direction. The field magnet member is arranged between the first rotor core and the second rotor core. The field magnet member is magnetized along an axial direction to generate primary magnetic poles in the primary projecting pieces, and generate secondary magnetic poles in the secondary projecting pieces. A rotor includes the first rotor core, the second rotor core, and the field magnet member.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: February 13, 2018
    Assignee: ASMO CO., LTD.
    Inventors: Koji Mikami, Yoji Yamada
  • Publication number: 20180013327
    Abstract: A rotor of a motor includes first and second rotor cores, a field magnet, and a commutator magnet. The first and second rotor cores each include a core base and a plurality of claw poles. The claw poles of the first rotor core and the claw poles of the second rotor core are alternately arranged in a circumferential direction. The field magnet is located between the core bases. The field magnet is magnetized in an axial direction so that the claw poles of the first rotor core and the claw poles of the second rotor core function as different magnetic poles in the circumferential direction. The commutator magnet is located on an outer circumference of the field magnet around the claw poles. The commutator magnet is magnetized so that surfaces having the same polarity face each other between the claw poles and the commutator magnet.
    Type: Application
    Filed: September 22, 2017
    Publication date: January 11, 2018
    Applicant: ASMO CO., Ltd.
    Inventors: Yoji Yamada, Koji Mikami, Akihiro Utsumi, Akihisa Hattori, Chie Morita, Seiya Yokoyama
  • Publication number: 20180006513
    Abstract: A motor includes a stator, a rotor and a case. The rotor includes a first rotor core, a second rotor core, and a field magnet. Each of the first rotor core and the second rotor core includes a core base and a plurality of claw poles. The field magnet is located between the core bases. The case includes a cylindrical yoke housing and a lid. To balance magnetic flux from the first rotor core with magnetic flux from the second rotor core, the distance between the rotor and the stator is varied from the distance between the rotor and the yoke housing or the teeth of the stator are shaped to enable magnetic saturation.
    Type: Application
    Filed: September 19, 2017
    Publication date: January 4, 2018
    Inventors: Koji MIKAMI, Shigemasa KATO, Yoji YAMADA, Seiya YOKOYAMA