Patents by Inventor Yoshiaki Takemoto

Yoshiaki Takemoto 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: 10862380
    Abstract: A rotor with four axially stacked rotor cores, and a plurality of field magnets interposed between them. Each rotor core includes a rotor-side claw-shaped magnetic pole. Each rotor-side claw-shaped magnetic poles are respectively extending from and formed on each rotor core at equal angle intervals. Tip end surfaces of the first and third rotor-side claw-shaped magnetic pole abut against or are closely opposed to each other axially. Tip end surfaces of the second and fourth rotor-side claw-shaped magnetic poles abut against or are closely opposed to each other in the axial direction. The plurality of field magnets are magnetized in the axial direction such that the field magnets causes the first and third rotor-side claw-shaped magnetic poles to function as first magnetic poles, and cause the second and fourth rotor-side claw-shaped magnetic poles to function as second magnetic poles.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: December 8, 2020
    Assignee: DENSO CORPORATION
    Inventors: Yoshiaki Takemoto, Yusuke Morimoto, Masashi Matsuda, Seiya Yokoyama
  • Patent number: 10826339
    Abstract: This motor includes a two-layer rotor, a two-layer stator and a control unit. An A-phase rotor includes a pair of rotor cores and a field magnet. A B-phase rotor includes a pair of rotor cores and a field magnet. An A-phase stator includes a pair of stator cores and an A-phase winding. A B-phase stator includes a pair of stator cores and a B-phase winding. The control unit controls an A-phase input voltage applied to the A-phase winding, and a B-phase input voltage applied to the B-phase winding. The relative arrangement angle of the A-phase stator and the A-phase rotor relative to the B-phase stator and the B-phase rotor is set to an electrical angle of 90 degrees. The control unit applies a leading phase angle to the basic voltage waveforms of the A-phase input voltage and the B-phase input voltage, to set the energization width to at most 180 degrees.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: November 3, 2020
    Assignee: DENSO CORPORATION
    Inventors: Yoko Tateishi, Yoshiaki Takemoto, Masashi Matsuda, Hironari Suzuki, Seiya Yokoyama, Shigemasa Kato, Kazunori Shimada, Takahiro Tsuchiya
  • Patent number: 10756607
    Abstract: A motor includes a rotor and a stator. The rotor includes a first rotor core including a plurality of first claw-like magnetic poles, a second rotor core including a plurality of second claw-like magnetic poles, and a magnetic field magnet arranged between the first and second rotor cores. The first and second claw-like magnetic poles are alternately arranged in a circumferential direction. The magnetic field magnet causes the first and second claw-like magnetic poles to function as magnetic poles different from each other. The stator includes a first stator core including a plurality of first claw-like magnetic poles, a second stator core including a plurality of second claw-like magnetic poles, and a coil section arranged between the first and second stator cores. The stator is configured to cause the first and second claw-like magnetic poles of the stator to function as magnetic poles different from each other and switch polarities of the magnetic poles on the basis of energization to the coil section.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: August 25, 2020
    Assignee: Denso Corporation
    Inventors: Yoshiaki Takemoto, Masashi Matsuda, Yusuke Morimoto
  • Publication number: 20200244195
    Abstract: A motor control device controls a two-phase motor. The two-phase motor obtains a combined torque, which serves as an output torque. The A-phase and B-phase motor portions being joined having a phase difference in terms of structure. The motor control device sets each of A-phase and B-phase drive currents supplied to the A-phase and B-phase motor portions to control the two-phase motor. The motor control device includes a fundamental wave setting unit that sets a sinusoidal fundamental wave current of the A-phase and B-phase drive currents, and a superimposing wave setting unit that sets a high-order harmonic current superimposed on the fundamental wave current. The superimposing wave setting unit sets the high-order harmonic current of at least one of “4n+1”th-order and “4n?1”th-order to reduce a component of “4n”th-order in torque pulsation of the combined torque, and “n” is a natural number.
    Type: Application
    Filed: June 7, 2018
    Publication date: July 30, 2020
    Applicant: DENSO CORPORATION
    Inventors: Kazunori SHIMADA, Toshihiro UCHIDA, Yoshiaki TAKEMOTO
  • Patent number: 10384491
    Abstract: A pneumatic tire whose position when mounted on a vehicle is specified has a tread portion 2 having an outside tread edge Teo, an inside tread edge Tei, an outside crown land region 6, and an inside crown land region 7. In a meridian cross-section of the tire including the rotational axis of the tire in its regular state mounted on a regular rim, inflated to a regular pressure and loaded with no tire load, the outside crown land region 6 and the inside crown land region 7 each have a tread convexed outwardly in the tire radial direction, and the radius of curvature R1 of the tread of the outside crown land region 6 is greater than the radius of curvature R2 of the tread of the inside crown land region 7.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: August 20, 2019
    Assignee: SUMITOMO RUBBER INDUSIRIES, LTD.
    Inventor: Yoshiaki Takemoto
  • Patent number: 10343462
    Abstract: A pneumatic tire comprises a tread portion 2 provided with two shoulder main grooves 3, a crown main grooves 4, two shoulder land zones 8, and two middle land zones 7. The shoulder land zones 8 are each provided with shoulder lateral grooves 11. The middle land zones 7 are each provided with middle narrow grooves 10. Each of the middle narrow grooves 10 comprises a sipe-like narrow portion 12 whose groove width is less than 2 mm, and a wide portion 14 whose groove width is not less than 2 mm. The wide portion 14 includes an axially outer wide portion 15 formed at the axially outer end of the middle narrow groove 10.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: July 9, 2019
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Yoshiaki Takemoto
  • Patent number: 10332752
    Abstract: A substrate includes a support layer, a column-shaped first bump, and a second bump. The support layer has a main surface. The first bump is filled with a first conductive metal and also has a first upper surface and a side surface. The second bump includes a plurality of fine particles formed of a second conductive metal and also has a third portion configured to cover the first upper surface and a fourth portion configured to cover a part of the side surface. The first bump is disposed on the main surface, or the first bump is connected to an electrode disposed on the main surface. The second bump has a convex second upper surface. A height of the fourth portion in a direction perpendicular to the first upper surface is smaller than that of the first bump.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: June 25, 2019
    Assignee: OLYMPUS CORPORATION
    Inventor: Yoshiaki Takemoto
  • Publication number: 20190097510
    Abstract: A motor includes a rotor and a stator. The rotor includes a first rotor core including a plurality of first claw-like magnetic poles, a second rotor core including a plurality of second claw-like magnetic poles, and a magnetic field magnet arranged between the first and second rotor cores. The first and second claw-like magnetic poles are alternately arranged in a circumferential direction. The magnetic field magnet causes the first and second claw-like magnetic poles to function as magnetic poles different from each other. The stator includes a first stator core including a plurality of first claw-like magnetic poles, a second stator core including a plurality of second claw-like magnetic poles, and a coil section arranged between the first and second stator cores. The stator is configured to cause the first and second claw-like magnetic poles of the stator to function as magnetic poles different from each other and switch polarities of the magnetic poles on the basis of energization to the coil section.
    Type: Application
    Filed: November 9, 2018
    Publication date: March 28, 2019
    Applicant: DENSO CORPORATION
    Inventors: Yoshiaki Takemoto, Masashi Matsuda, Yusuke Morimoto
  • Patent number: 10141821
    Abstract: A motor includes a rotor and a stator. The rotor includes a first rotor core including a plurality of first claw-like magnetic poles, a second rotor core including a plurality of second claw-like magnetic poles, and a magnetic field magnet arranged between the first and second rotor cores. The first and second claw-like magnetic poles are alternately arranged in a circumferential direction. The magnetic field magnet causes the first and second claw-like magnetic poles to function as magnetic poles different from each other. The stator includes a first stator core including a plurality of first claw-like magnetic poles, a second stator core including a plurality of second claw-like magnetic poles, and a coil section arranged between the first and second stator cores. The stator is configured to cause the first and second claw-like magnetic poles of the stator to function as magnetic poles different from each other and switch polarities of the magnetic poles on the basis of energization to the coil section.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: November 27, 2018
    Assignee: Denso Corporation
    Inventors: Yoshiaki Takemoto, Masashi Matsuda, Yusuke Morimoto
  • Publication number: 20180301492
    Abstract: A solid-state imaging device includes a first layer, a second layer, a plurality of first microlenses, and a plurality of second microlenses. A first light blocking film of the second layer is arranged in a region corresponding to the plurality of photoelectric conversion elements of the first layer. The plurality of first microlenses are arranged in a region, which corresponds to the plurality of photoelectric conversion elements, on the first principal surface of the first layer. The plurality of second microlenses are arranged in a region which is different from a region corresponding to the first light blocking film in a fourth principal surface of the second layer and which corresponds to a first light transmission layer of the first layer.
    Type: Application
    Filed: June 12, 2018
    Publication date: October 18, 2018
    Applicant: OLYMPUS CORPORATION
    Inventor: Yoshiaki Takemoto
  • Publication number: 20180269729
    Abstract: A motor comprises an A-phase stator unit, a B-phase stator unit, and a rotor. The phase stator unit and the B-phase stator unit respectively contain a coil unit and a pair of stator cores, each pair of stator cores having a plurality of claw-shaped magnetic poles. The rotor comprises at least two permanent magnets facing the claw-shaped magnetic poles of the A-phase stator unit and the claw-shaped magnetic poles of the B-phase stator unit, respectively. The A-phase stator unit and the B-phase stator unit are provided side by side in the axial direction, displaced from one another by a prescribed electrical angle. The two permanent magnets are arranged side by side in the axial direction, displaced from one another by a prescribed electrical angle. The direction of displacement between the A-phase stator unit and the B-phase stator unit is the opposite of the direction of displacement between the two permanent magnets.
    Type: Application
    Filed: November 29, 2016
    Publication date: September 20, 2018
    Applicant: ASMO CO., LTD.
    Inventors: Yoshiaki TAKEMOTO, Shigemasa KATO, Masashi MATSUDA, Hironari SUZUKI, Kazunori SHIMADA, Sho NAKANO, Takahiro TSUCHIYA
  • Publication number: 20180219041
    Abstract: A solid-state imaging device includes a first substrate and a second substrate stacked on the first substrate. The first substrate has a first semiconductor layer including a plurality of first photoelectric conversion elements and a plurality of openings. The second substrate has a second semiconductor layer including a plurality of second photoelectric conversion elements. The plurality of openings penetrate the first semiconductor layer. Each of the plurality of second photoelectric conversion elements is disposed in a region corresponding to any one of the plurality of openings.
    Type: Application
    Filed: March 27, 2018
    Publication date: August 2, 2018
    Applicant: OLYMPUS CORPORATION
    Inventor: Yoshiaki Takemoto
  • Publication number: 20180152064
    Abstract: This motor includes a two-layer rotor, a two-layer stator and a control unit. An A-phase rotor includes a pair of rotor cores and a field magnet. A B-phase rotor includes a pair of rotor cores and a field magnet. An A-phase stator includes a pair of stator cores and an A-phase winding. A B-phase stator includes a pair of stator cores and a B-phase winding. The control unit controls an A-phase input voltage applied to the A-phase winding, and a B-phase input voltage applied to the B-phase winding. The relative arrangement angle of the A-phase stator and the A-phase rotor relative to the B-phase stator and the B-phase rotor is set to an electrical angle of 90 degrees. The control unit applies a leading phase angle to the basic voltage waveforms of the A-phase input voltage and the B-phase input voltage, to set the energization width to at most 180 degrees.
    Type: Application
    Filed: August 18, 2016
    Publication date: May 31, 2018
    Applicant: ASMO CO., LTD.
    Inventors: Yoko TATEISHI, Yoshiaki TAKEMOTO, Masashi MATSUDA, Hironari SUZUKI, Seiya YOKOYAMA, Shigemasa KATO, Kazunori SHIMADA, Takahiro TSUCHIYA
  • Patent number: 9981508
    Abstract: It is a pneumatic tire 1 which is provided with a pair of shoulder land portions 4A defined between shoulder main grooves 3A and tread edges 2t by having the grooves 3A. At least one of the shoulder land portions 4A is provided with a plurality of shoulder lug grooves 5 and a plurality of shoulder sipes 6. The shoulder lug grooves 5 include first shoulder lug grooves 5A extending axially inward from the tread edge 2t and terminating without reaching the shoulder main groove 3A. The shoulder sipes 6 include first shoulder sipes 6A extending axially inward from the axially inner ends 5Ai of the first shoulder lug grooves 5A and connected to the shoulder main groove 3A, and second shoulder sipes 6B intersecting the first shoulder sipes 6A and extending in the tire circumferential direction.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: May 29, 2018
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Yoshiaki Takemoto
  • Patent number: 9966807
    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: May 8, 2018
    Assignee: ASMO CO., LTD.
    Inventors: Seiya Yokoyama, Yoshiaki Takemoto
  • Publication number: 20180123434
    Abstract: A rotor with four axially stacked rotor cores, and a plurality of field magnets interposed between them. Each rotor core includes a rotor-side claw-shaped magnetic pole. Each rotor-side claw-shaped magnetic poles are respectively extending from and formed on each rotor core at equal angle intervals. Tip end surfaces of the first and third rotor-side claw-shaped magnetic pole abut against or are closely opposed to each other axially. Tip end surfaces of the second and fourth rotor-side claw-shaped magnetic poles abut against or are closely opposed to each other in the axial direction. The plurality of field magnets are magnetized in the axial direction such that the field magnets causes the first and third rotor-side claw-shaped magnetic poles to function as first magnetic poles, and cause the second and fourth rotor-side claw-shaped magnetic poles to function as second magnetic poles.
    Type: Application
    Filed: December 28, 2017
    Publication date: May 3, 2018
    Inventors: Yoshiaki TAKEMOTO, Yusuke MORIMOTO, Masashi MATSUDA, Seiya YOKOYAMA
  • Patent number: 9961286
    Abstract: There are provided a first semiconductor substrate in which a plurality of photoelectric conversion circuits, which are some circuit elements of the pixel cells including the photoelectric conversion unit, are formed in a two-dimensional matrix, a second semiconductor substrate in which a plurality of memory circuits, which are some other circuit elements of the pixel cells, are formed in a two-dimensional matrix, wherein the some other circuit elements of the pixel cells include memory units that correspond to the photoelectric conversion circuits, store electric signals output by the photoelectric conversion units, and output pixel signals according to the electric signals, and a connection electrode electrically connected to a signal line of the photoelectric conversion circuits and a signal line of the memory circuits, wherein the pixel cells are divided into a plurality of pixel groups in which the pixel cells are combined so that adjacent pixel cells are not included if pixel cells corresponding to ligh
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: May 1, 2018
    Assignee: OLYMPUS CORPORATION
    Inventors: Yoshiaki Takemoto, Naofumi Sakaguchi
  • Patent number: 9950572
    Abstract: A pneumatic tire has a tread portion provided with an asymmetrical tread pattern and comprising an inboard shoulder land portion, an inboard shoulder main groove, an inboard middle land portion, an inboard crown main groove, a center land portion, an outboard crown main groove, an outboard middle land portion, an outboard shoulder main groove, and an outboard shoulder land portion. The inboard middle land portion is provided with inboard middle axial grooves extending from the inboard shoulder main groove and each comprising a main portion and a turnback portion. The inboard shoulder land portion is provided with inboard shoulder sipes extending from the inboard shoulder main groove.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: April 24, 2018
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Yoshiaki Takemoto
  • Patent number: 9923420
    Abstract: A motor includes a stator and a rotor. The stator includes an inner circumference stator section and an outer circumference stator section. The inner circumference stator section and the outer circumference stator section each include two stator cores and a coil. The two stator cores each include claw poles and are coupled to each other. The coil is arranged between the two stator cores. The rotor includes an inner circumference magnet and an outer circumference magnet. The inner circumference magnet, which is arranged at an inner circumferential side of the inner circumference stator section, opposes the claw poles in the radial direction. The outer circumference magnet, which is arranged at an outer circumferential side of the outer circumference stator section, opposes the claw poles in the radial direction. The inner circumference stator section and the inner circumference magnet form an inner circumference motor unit.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: March 20, 2018
    Assignee: ASMO CO., LTD.
    Inventors: Yoshiaki Takemoto, Shigemasa Kato, Masashi Matsuda
  • Publication number: 20180076050
    Abstract: A substrate includes a support layer, a column-shaped first bump, and a second bump. The support layer has a main surface. The first bump is filled with a first conductive metal and also has a first upper surface and a side surface. The second bump includes a plurality of fine particles formed of a second conductive metal and also has a third portion configured to cover the first upper surface and a fourth portion configured to cover a part of the side surface. The first bump is disposed on the main surface, or the first bump is connected to an electrode disposed on the main surface. The second bump has a convex second upper surface. A height of the fourth portion in a direction perpendicular to the first upper surface is smaller than that of the first bump.
    Type: Application
    Filed: November 16, 2017
    Publication date: March 15, 2018
    Applicant: OLYMPUS CORPORATION
    Inventor: Yoshiaki Takemoto