Patents by Inventor Kazuhiro Yoshikawa

Kazuhiro Yoshikawa 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: 20200143974
    Abstract: Provided is a reactor including a coil provided with two winding portions that are obtained by winding a winding wire such that axes of the winding portions are parallel to each other, and a magnetic core including a rectangular parallelepiped inner core portion disposed in each of the winding portions, and outer core portions that are disposed outside the winding portions and are for linking the inner core portions, in which at least one of two outer corner portions out of four corner portions of each of the inner core portions includes a corner chamfering portion that has been chamfered more than an inner corner portion that is opposite the outer corner portion, the four corner portions facing an inner circumferential surface of the winding portion and the two outer corner portions being disposed on the side of each winding portion that is distant from the other winding portion.
    Type: Application
    Filed: January 29, 2018
    Publication date: May 7, 2020
    Inventors: Kazuhiro Inaba, Kouji Nishi, Kouhei Yoshikawa
  • Publication number: 20200137883
    Abstract: Disclosed herein is a thin film capacitor that includes a capacitive insulating film, a first metal film formed on one surface of the capacitive insulating film, and a second metal film formed on other surface of the capacitive insulating film and made of a metal material different from that of the first metal film. The thin film capacitor has an opening penetrating the capacitive insulating film, first metal film, and second metal film. The second metal film is thicker than the first metal film. A first size of a part of the opening that penetrates the first metal film is larger than a second size of a part of the opening that penetrates the second metal film.
    Type: Application
    Filed: October 28, 2019
    Publication date: April 30, 2020
    Inventors: Kazuhiro YOSHIKAWA, Yuuki ABURAKAWA, Tatsuo NAMIKAWA, Kenichi YOSHIDA, Hitoshi SAITA
  • Publication number: 20200118727
    Abstract: A reactor includes: a coil including a first winding portion and a second winding portion that are formed by winding a wire, the winding portions being disposed side by side; and a magnetic core including a first inner core portion that is disposed on an inner side of the first winding portion, a second inner core portion that is disposed on an inner side of the second winding portion, and outer core portions that are disposed on an outer side of the two winding portions and connect end portions of the two inner core portions. In the coil, a circumferential length of the second winding portion is shorter than a circumferential length of the first winding portion, and the reactor includes a heat dissipation plate that is disposed on at least a portion of an outer circumferential surface of the second winding portion.
    Type: Application
    Filed: January 22, 2018
    Publication date: April 16, 2020
    Inventors: Kazuhiro Inaba, Kouhei Yoshikawa, Akinori Ooishi
  • Publication number: 20200114601
    Abstract: In a toric lens comprising a toric surface having a fine uneven structure, the fine uneven structure includes a plurality of holes, the plurality of holes have a hole depth H and a surface opening diameter ?t which satisfy an expression of 0.3?H/?t?0.6, and (a) the plurality of holes have a hole structure having a cylindrical shape on a bottom surface side and a circular truncated cone shape having an opening diameter increasing toward a surface side, or (b) an angle ? formed between an opening portion and the surface of the plurality of holes satisfies 78°???85°.
    Type: Application
    Filed: October 15, 2019
    Publication date: April 16, 2020
    Inventors: Junji Terada, Toshiaki Yoshikawa, Kazuhiro Arai, Noriyuki Nakai, Yu Kameno, Miwa Takachi
  • Publication number: 20200111596
    Abstract: A reactor includes a coil having a winding portion, and a magnetic core including a core piece having an inner core portion disposed inside the winding portion. The core piece is a compact made of a composite material that contains a magnetic powder and a resin. The reactor further includes: a first projection that is integrated with and projects from an outer peripheral face of the inner core portion, and comes into contact with an inner peripheral face of the winding portion so as to position the winding portion in a diameter direction of the winding portion, and a second projection that is integrated with and projects from the core piece at a position opposing an end face of the winding portion, and comes into contact with the end face of the winding portion so as to position the winding portion in an axial direction thereof.
    Type: Application
    Filed: April 10, 2018
    Publication date: April 9, 2020
    Inventors: Kazuhiro Inaba, Kouhei Yoshikawa
  • Publication number: 20200075230
    Abstract: Provided is a reactor including: a coil having wound portions; and a magnetic core including core pieces having inner core portions arranged inside of the wound portions. The core pieces are molded bodies of a composite material including a magnetic powder and a resin, and the reactor includes: projections that are integrally molded with and protrude from outer peripheral surfaces of the inner core portions, and that position the wound portions in radial directions by coming into contact with inner peripheral surfaces of the wound portions; and inner resin portions that fill spaces between the inner peripheral surfaces of the wound portions and the outer peripheral surfaces of the inner core portions excluding the projections.
    Type: Application
    Filed: April 10, 2018
    Publication date: March 5, 2020
    Inventors: Kazuhiro Inaba, Kouhei Yoshikawa
  • Publication number: 20200043751
    Abstract: A first insulating layer, a conductor layer included on a first main surface, an electronic component included on the first main surface and a second insulating layer stacked on the first insulating layer are included, a stacking direction of the first insulating layer and the second insulating layer is the same as a stacking direction of a first electrode layer, a second electrode layer, and the dielectric layer in the electronic component, and a height position of a main surface of the electronic component on an opposite side from a side of the first main surface is different from a height position of a main surface of the conductor layer adjacent to the electronic component on an opposite side from a side of the first main surface in the stacking direction.
    Type: Application
    Filed: March 16, 2018
    Publication date: February 6, 2020
    Applicant: TDK CORPORATION
    Inventors: Mitsuhiro TOMIKAWA, Kazuhiro YOSHIKAWA, Koichi TSUNODA, Kenichi YOSHIDA
  • Patent number: 10554880
    Abstract: An image processing system performs image processing on images including overlapping image regions as overlapping regions. The system includes a calculator configured to calculate an evaluation value for evaluating each image using pixel values of pixels in each overlapping region; a determination controller configured to determine, based on the calculated evaluation values, whether there is an image to be corrected in the images; an image determiner configured to, when there is the image to be corrected, determine a correction reference image as a reference, out of the images, based on the evaluation values; and an image corrector configured to correct the image to be corrected based on the correction reference image.
    Type: Grant
    Filed: May 20, 2015
    Date of Patent: February 4, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventors: Hiromi Yoshikawa, Kazuhiro Yoshida
  • Publication number: 20200013554
    Abstract: In a thin-film capacitor, an electrode terminal layer and an electrode layer of a capacitor portion are connected to electrode terminals by via conductors that is formed to penetrate an insulating layer in a thickness direction thereof, and a short circuit wiring in the thickness direction is realized by the via conductors. In the thin-film capacitor, an increase in the number of terminals in the plurality of electrode terminals is achieved, a decrease in length of a circuit wiring is achieved, and thus a thin-film capacitor with low-ESL has been achieved.
    Type: Application
    Filed: February 13, 2018
    Publication date: January 9, 2020
    Applicant: TDK Corporation
    Inventors: Koichi TSUNODA, Mitsuhiro TOMIKAWA, Kazuhiro YOSHIKAWA, Kenichi YOSHIDA
  • Patent number: 10527114
    Abstract: A caliper body (12) of a disc brake apparatus (10) includes an accommodating portion (14a) which accommodates a piston (20) for pressing a brake pad (66), a cam lever (42) for generating a pressing force through rotation, and a pressing force transmission mechanism (24) which is interposed between the piston (20) and the cam lever (42) to transmit a pressing force to the piston (20). The accommodating portion (14a) has an opening portion through which the piston (20), the cam lever (42) and the pressing force transmission mechanism (24) can be assembled into the caliper body (12) from a thick back side thereof, and both the accommodating portion (14a) and the opening portion are opened to a rotor disposition side area in the caliper body (12).
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: January 7, 2020
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Kazuhiro Yoshikawa, Toshifumi Maehara
  • Publication number: 20200005986
    Abstract: A reactor includes: a coil including a first winding portion and a second winding portion formed by winding a winding wire, such that axes of the winding portions are parallel; and a magnetic core including: a first inner core portion arranged in the first winding portion; a second inner core portion arranged in the second winding portion; and outer core portions that are arranged outside of the winding portions and couple both inner core portions. A specification of a constituent material of the first inner core portion and a specification of a constituent material of the second inner core portion are different, and the second inner core portion is configured such that alternating-current loss of the second inner core portion and the second winding portion is smaller than alternating-current loss of the first inner core portion and the first winding portion.
    Type: Application
    Filed: January 29, 2018
    Publication date: January 2, 2020
    Inventors: Kazuhiro Inaba, Kouji Nishi, Kouhei Yoshikawa
  • Publication number: 20190392992
    Abstract: Disclosed herein is a thin film capacitor that includes a capacitive insulating film having first and second through holes, a first metal film provided on one surface of the capacitive insulating film, and a second metal film provided on the other surface of the capacitive insulating film. The first and second metal films are made of different metal materials from each other. The first metal film is divided into a first area positioned outside the first space and a second area positioned inside the first space. The second metal film is divided into a third area positioned outside the second space and a fourth area positioned inside the second space. The third area is connected to the second area through the first through hole. The fourth area is connected to the first area through the second through hole.
    Type: Application
    Filed: June 10, 2019
    Publication date: December 26, 2019
    Applicant: TDK CORPORATION
    Inventors: Michihiro KUMAGAE, Kazuhiro YOSHIKAWA, Shigeaki TANAKA, Hitoshi SAITA
  • Publication number: 20190378791
    Abstract: An electronic component mounting package includes a semiconductor element which is disposed such that an active surface faces a main surface of a wiring portion, and which is electrically connected to the wiring portion via a first terminal; and a thin film passive element which is disposed between the active surface of the semiconductor element and the main surface of the wiring portion when seen in a lamination direction, and which is electrically connected to the semiconductor element. A part of the first terminal is disposed on an outer side with respect to the thin film passive element in a plan view. A length of the first terminal in the lamination direction disposed on the outer side with respect to the thin film passive element is larger than a thickness of the thin film passive element in the lamination direction.
    Type: Application
    Filed: January 10, 2018
    Publication date: December 12, 2019
    Applicant: TDK Corporation
    Inventors: Kazuhiro YOSHIKAWA, Mitsuhiro TOMIKAWA, Kenichi YOSHIDA
  • Publication number: 20190358503
    Abstract: Provided is a method for manufacturing an iron golf club head by forging a single round rod member with a pair of dies to form, as a single piece, a body and a neck into which a shaft is to be inserted. The method includes: a first step of heating the single round rod member into a heated material; a second step of placing the heated material in the pair of dies; and a third step of forging the heated material placed in the pair of dies. In the third step, the heated material is prevented from flowing out from parting surfaces of the respective dies at a sole side of the body in the pair of dies, and the heated material blocked at the sole side in the pair of dies flows toward each of a toe of the body and the neck in the pair of dies.
    Type: Application
    Filed: March 27, 2018
    Publication date: November 28, 2019
    Inventors: Kazuhiro DOI, Tetsuya KANAYAMA, Jun YOSHIKAWA
  • Patent number: 10487909
    Abstract: Six through holes are formed in pinion gear supporting portions of two input plate members working as a carrier that supports pinion gears of a rotary inertia mass damper. The two input plate members are opposed to each other in such a manner that the through holes are aligned with each other. The through holes support the pinion gear. The input plate members are coupled with each other by means of rivets passing through the through holes located on both sides of the through holes. This configuration ensures strength (rigidity) of the carrier, suppresses deformation of a planetary gear, and improves meshing accuracy of gears.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: November 26, 2019
    Assignees: AISIN AW INDUSTRIES CO., LTD, AISIN AW CO., LTD.
    Inventors: Takuya Yoshikawa, Aki Ogawa, Akiyoshi Kato, Ryosuke Otsuka, Kazuyoshi Ito, Masaki Wajima, Kazuhiro Itou
  • Patent number: 10490732
    Abstract: According to one embodiment, a magnetic memory device includes a stacked structure including a first magnetic layer, a second magnetic layer and a nonmagnetic layer between the first magnetic layer and the second magnetic layer, and a sidewall insulating layer provided on a side surface of the stacked structure and containing boron (B).
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: November 26, 2019
    Assignee: TOSHIBA MEMORY CORPORATION
    Inventors: Yasuyuki Sonoda, Daisuke Watanabe, Masatoshi Yoshikawa, Youngmin Eeh, Shuichi Tsubata, Toshihiko Nagase, Yutaka Hashimoto, Kazuya Sawada, Kazuhiro Tomioka, Kenichi Yoshino, Tadaaki Oikawa
  • Patent number: 10483345
    Abstract: An electronic component embedded substrate includes: a substrate that includes an insulating layer and has a first principal surface and a second principal surface on the opposite side of the first principal surface; and an electronic component that is embedded in the substrate and has a plurality of first terminals provided close to the first principal surface, a plurality of second terminals provided close to the second principal surface, and a capacity part provided between the plurality of first terminals and the plurality of second terminals. The electronic component is configured such that at least a part of the second terminals is embedded in the insulating layer. An insulating member is provided between the neighboring second terminals to be in contact with both of the neighboring second terminals. The insulating member and the insulating layer are formed of materials whose thermal expansion coefficients are different from each other.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: November 19, 2019
    Assignee: TDK CORPORATION
    Inventors: Mitsuhiro Tomikawa, Koichi Tsunoda, Kazuhiro Yoshikawa, Kenichi Yoshida
  • Patent number: 10461245
    Abstract: According to one embodiment, a method of manufacturing a magnetic memory device, includes forming a stack film including a magnetic layer on an underlying area, forming a hard mask on the stack film, forming a stack structure by etching the stack film using the hard mask as a mask, forming a first protective insulating film on a side surface of the stack structure, and performing an oxidation treatment.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: October 29, 2019
    Assignee: TOSHIBA MEMORY CORPORATION
    Inventors: Shuichi Tsubata, Masatoshi Yoshikawa, Satoshi Seto, Kazuhiro Tomioka
  • Patent number: 10446279
    Abstract: To more reliably supply cooling water to a reactor pressure vessel and a reactor containment vessel using a back-up building if a severe accident should occur, a boiling water type nuclear power plant includes a nuclear reactor building including a reactor containment vessel, and an external building, which is installed independently outside the nuclear reactor building and which has an anti-hazard property. The external building has a power source and an operating panel independent of the nuclear reactor building. The boiling water type nuclear power plant includes a water injection pump installed inside the external building, an alternative water injection pipe performing water injection at least on a reactor pressure vessel or the reactor containment vessel in the nuclear reactor building from the water injection pump, and a valve connected to the alternative water injection pipe, making it possible to perform alternative water injection if a severe accident occurs.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: October 15, 2019
    Assignee: Hitachi-GE Nuclear Energy, Ltd.
    Inventors: Yuriko Onishi, Kazuhiro Yoshikawa, Takashi Sumikawa
  • Publication number: 20190304701
    Abstract: A thin-film capacitor satisfies a relationship of CTE1>CTE2>CTE3 regarding a linear expansion coefficient CTE1 of a base, a linear expansion coefficient CTE2 of a capacitance unit, and a linear expansion coefficient CTE3 of a barrier layer. The inventors have newly found that in a case in which such a relationship is satisfied, when a temperature falls from a deposition temperature, cracking occurring in the capacitance unit of the thin-film capacitor is prevented, and cracking occurring in the barrier layer is also prevented.
    Type: Application
    Filed: March 21, 2019
    Publication date: October 3, 2019
    Applicant: TDK CORPORATION
    Inventors: Daiki ISHII, Kazuhiro YOSHIKAWA, Koichi TSUNODA, Mitsuhiro TOMIKAWA, Junki NAKAMOTO, Kenichi YOSHIDA