Patents by Inventor Yoshiki KUWAHARA

Yoshiki KUWAHARA 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: 10770944
    Abstract: A plurality of bus rings, which are arranged at bus ring maintaining portions, include coil connecting portions, which are protruded in an outer direction in a shaft direction of a stator core with respect to the bus ring maintaining portions, and terminals of coils of a stator are bent in an outer direction in a diameter direction of the stator core in a state where end surfaces of wall portions of bobbins are used as base points, and are connected to the coil connecting portions of the bus rings, and the end surfaces of the wall portions are protruded in an outer direction in a shaft direction of the stator core with respect to end surfaces of the bus rings, and are positioned in an inner direction in a shaft direction of the stator core with respect to end surfaces of the coil connecting portions of the bus rings.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: September 8, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Fumitaka Totsuka, Yuki Yamamoto, Masaya Inoue, Yoshiki Kuwahara, Kota Katsuragi, Ryuji Kitamura
  • Publication number: 20200212752
    Abstract: A rotating electrical machine includes a rotor; a stator having a core annularly arranged facing the outer peripheral surface of the rotor, a coil wound around the core and having a coil end formed protruding from an end surface in the axial direction of the core, and an insulator formed on the end surface in the axial direction of the core and insulating the core and the coil; a bus bar arranged on the outer peripheral side of the coil end of the stator; and a terminal block installed on the outer peripheral side of the bus bar for introducing an electric current from an external power source to the stator, and the insulator has a groove portion in which the bus bar is held, and a terminal block housing portion in which the terminal block is held.
    Type: Application
    Filed: November 11, 2016
    Publication date: July 2, 2020
    Inventors: Yoshiaki KITTA, Ken NISHIKAWA, Yoshiki KUWAHARA, Fumitaka TOTSUKA, Yutaka IKURA, Koichi OJIMA, Masaya INOUE
  • Publication number: 20200208103
    Abstract: The present invention provides a method for maintaining a continuous epithelial structure of a retinal tissue including culturing the retinal tissue in a medium comprising a methyl group donor or a substrate of the methyl group donor at a concentration at which cell differentiation of a neural retinal progenitor cell is suppressed, and a neurite extension inhibitor at a concentration at which neurite extension is suppressed.
    Type: Application
    Filed: July 20, 2018
    Publication date: July 2, 2020
    Applicants: RIKEN, SUMITOMO DAINIPPON PHARMA CO., LTD., SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Hideya SAKAGUCHI, Yoshiki SASAI (deceased), Mototsugu EIRAKU, Daiki NUKAYA, Atsushi KUWAHARA
  • Publication number: 20200094486
    Abstract: The present invention is provided with: an insulation holder formed of a thermoplastic resin material and having a first opening; a wire connection ring formed of a thermoplastic resin material and having a second opening; and a joining component inserted astride in the first opening and the second opening, the joining component being formed of a metal material having a higher melting point than those of the thermoplastic resin materials, the joining component having a higher stiffness than those of the insulation holder and the wire connection ring, wherein a welded part is formed by welding in at least a part of an area where each of the insulation holder and the wire connection ring has contact with the joining component.
    Type: Application
    Filed: November 27, 2019
    Publication date: March 26, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yoshiki KUWAHARA, Ryuichi KITORA, Akihiro YAMAMURA, Shogo OKAMOTO, Masashi NAKAMURA, Shinichiro YOSHIDA
  • Patent number: 10576690
    Abstract: The present invention is provided with: an insulation holder formed of a thermoplastic resin material and having a first opening; a wire connection ring formed of a thermoplastic resin material and having a second opening; and a joining component inserted astride in the first opening and the second opening, the joining component being formed of a metal material having a higher melting point than those of the thermoplastic resin materials, the joining component having a higher stiffness than those of the insulation holder and the wire connection ring, wherein a welded part is formed by welding in at least a part of an area where each of the insulation holder and the wire connection ring has contact with the joining component.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: March 3, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yoshiki Kuwahara, Ryuichi Kitora, Akihiro Yamamura, Shogo Okamoto, Masashi Nakamura, Shinichiro Yoshida
  • Publication number: 20190379253
    Abstract: It is realized that a shape of a bus ring is simplified, and a rotary electric machine is downsized. A coil connecting portion, which is protruded from bus ring maintaining portions to a shaft direction, is provided at a bus ring, and coil terminals are arranged in such a way that the coil terminals are protruded toward an outer side in a diameter direction with respect to the coil connecting portion, and the coil terminals and the coil connecting portion are connected by performing a resistance welding process. Thereby, it is not required that a slit and a bent portion or the like are formed at a tip of the bus ring, and a shape of the bus ring is simplified. Moreover, a welding board for a welding process and a chuck board for a connecting portion are not required, so that a rotary electric machine can be downsized.
    Type: Application
    Filed: December 26, 2018
    Publication date: December 12, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Fumitaka TOTSUKA, Yoshiki KUWAHARA, Yoshiaki KITTA, Kohei KAWATA
  • Publication number: 20190356189
    Abstract: A plurality of bus rings, which are arranged at bus ring maintaining portions, include coil connecting portions, which are protruded in an outer direction in a shaft direction of a stator core with respect to the bus ring maintaining portions, and terminals of coils of a stator are bent in an outer direction in a diameter direction of the stator core in a state where end surfaces of wall portions of bobbins are used as base points, and are connected to the coil connecting portions of the bus rings, and the end surfaces of the wall portions are protruded in an outer direction in a shaft direction of the stator core with respect to end surfaces of the bus rings, and are positioned in an inner direction in a shaft direction of the stator core with respect to end surfaces of the coil connecting portions of the bus rings.
    Type: Application
    Filed: August 20, 2018
    Publication date: November 21, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Fumitaka TOTSUKA, Yuki YAMAMOTO, Masaya INOUE, Yoshiki KUWAHARA, Kota KATSURAGI, Ryuji KITAMURA
  • Publication number: 20190260255
    Abstract: A rotating electric machine includes a rotor, a stator, and a case, wherein each of the sub stator cores has a first insulated bobbin, a stator iron core, a second insulated bobbin, and a coil, and the coil is disposed in teeth parts of the first insulated bobbin, the stator iron core, and the second insulated bobbin, all of which are stacked in layers, and the first insulated bobbin has three ring holding parts which are formed in a core back part and extend to a circumferential direction, and the bus rings are separately inserted into the ring holding parts formed in the first insulated bobbin, and the first insulated bobbin, the stator iron core, and the second insulated bobbin each has a convex part formed at one side face of the core back part and a concave part formed at the other side face of the core back part.
    Type: Application
    Filed: November 16, 2016
    Publication date: August 22, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yoshiki KUWAHARA, Ryuji KITAMURA, Yoshiaki KITTA, Fumitaka TOTSUKA, Koichi OJIMA, Masaya INOUE
  • Publication number: 20190169570
    Abstract: The present invention provides a method for producing a cell aggregate containing a ciliary marginal zone-like structure, including a step of culturing a cell aggregate containing a retinal tissue in which Chx10 positive cells are present in a proportion of 20% or more and 100% or less of the tissue in a serum-free medium or serum-containing medium each containing a substance acting on the Wnt signal pathway and a substance inhibiting the FGF signal pathway for only a period before the appearance of a RPE65 gene expressing cell, followed by culturing the “cell aggregate in which a RPE65 gene-expressing cell does not appear” thus obtained in a serum-free medium or serum-containing medium each free of a substance acting on the Wnt signal pathway and so on. According to the production method of the present invention, a ciliary marginal zone-like structure can be produced with high efficiency.
    Type: Application
    Filed: February 5, 2019
    Publication date: June 6, 2019
    Applicants: SUMITOMO CHEMICAL COMPANY, LIMITED, RIKEN
    Inventors: Atsushi KUWAHARA, Yoshiki SASAI
  • Patent number: 10056799
    Abstract: A coil group 23G is composed of windings 23U to 23W for U phase, V phase, and W phase. One ends 23U1 to 23W1 of the windings for the respective phases composing the coil group 23G are connected to respective power supply bus bars 25U to 25W, and the other ends 23U2 and 23W2 of the windings for the phases positioned at both ends in the circumferential direction in the coil group 23G extend toward the other end 23V2 of the winding for the rest of the phases, whereby the other ends 23U2 to 23W2 of the windings for the respective phases are mutually connected.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: August 21, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shogo Okamoto, Ken Nishikawa, Masashi Nakamura, Akihiro Yamamura, Kota Hirohashi, Yoshiki Kuwahara
  • Publication number: 20170217083
    Abstract: The present invention is provided with: an insulation holder formed of a thermoplastic resin material and having a first opening; a wire connection ring formed of a thermoplastic resin material and having a second opening; and a joining component inserted astride in the first opening and the second opening, the joining component being formed of a metal material having a higher melting point than those of the thermoplastic resin materials, the joining component having a higher stiffness than those of the insulation holder and the wire connection ring, wherein a welded part is formed by welding in at least a part of an area where each of the Insulation holder and the wire connection ring has contact with the joining component.
    Type: Application
    Filed: October 22, 2015
    Publication date: August 3, 2017
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yoshiki KUWAHARA, Ryuichi KITORA, Akihiro YAMAMURA, Shogo OKAMOTO, Masashi NAKAMURA, Shinichiro YOSHIDA
  • Publication number: 20160190886
    Abstract: A coil group 23G is composed of windings 23U to 23W for U phase, V phase, and W phase. One ends 23U1 to 23W1 of the windings for the respective phases composing the coil group 23G are connected to respective power supply bus bars 25U to 25W, and the other ends 23U2 and 23W2 of the windings for the phases positioned at both ends in the circumferential direction in the coil group 23G extend toward the other end 23V2 of the winding for the rest of the phases, whereby the other ends 23U2 to 23W2 of the windings for the respective phases are mutually connected.
    Type: Application
    Filed: December 19, 2013
    Publication date: June 30, 2016
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shogo OKAMOTO, Ken NISHIKAWA, Masashi NAKAMURA, Akihiro YAMAMURA, Kota HIROHASHI, Yoshiki KUWAHARA