Patents by Inventor Shinya Katayama

Shinya Katayama 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: 11043863
    Abstract: A method of manufacturing a rotor includes: applying the adhesive to an adhesive placement position on an outer peripheral surface of the permanent magnet or an inner peripheral surface of the magnet hole, the adhesive containing an expansive agent that is expanded by being heated to a temperature that is equal to or higher than an expansion temperature; drying the adhesive after applying the adhesive; inserting the permanent magnet into the magnet hole of the rotor core after drying the adhesive; and fixing the permanent magnet and the rotor core to each other using the adhesive by expanding the expansive agent and curing the adhesive by heating the adhesive to a temperature that is equal to or higher than the expansion temperature after inserting the permanent magnet.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: June 22, 2021
    Assignee: AISIN AW CO., LTD.
    Inventors: Hideharu Ushida, Tetsuya Matsubara, Tetsuya Takahashi, Shinya Katayama
  • Publication number: 20210036569
    Abstract: A rotating electrical machine stator and a method for manufacturing a rotating electrical machine stator with high productivity. A rotating electrical machine stator includes a stator core having a slot; and a coil having a leg part including a held-in-slot part held in the slot and a portion extending from the held-in-slot part, and a resin foam is provided between an inner surface of the slot and an outer surface of the held-in-slot part facing the inner surface of the slot. The coil is formed by joining together a plurality of segment conductors each having a joint part, and a conductive joint material is disposed between a pair of joint parts facing each other in the slot.
    Type: Application
    Filed: March 19, 2019
    Publication date: February 4, 2021
    Applicant: AISIN AW CO., LTD.
    Inventors: Kiyotaka KOGA, Tomotsugu SUGIHARA, Tetsuya FUNAYAMA, Shinya KATAYAMA, Takahiro KOBUCHI
  • Patent number: 10714995
    Abstract: A rotor for a rotary electric machine, the rotor including a rotor core that has a magnet hole; a permanent magnet inserted into the magnet hole; and an adhesive layer provided between the permanent magnet and a wall surface of the magnet hole and including a plurality of capsule bodies therein, the adhesive layer fixing the permanent magnet to the wall surface of the magnet hole, wherein the adhesive layer is provided only on a wall surface of the magnet hole on a first side, which is one of a wall surface of the magnet hole on an inner side in a radial direction and a wall surface on an outer side in the radial direction.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: July 14, 2020
    Assignee: AISIN AW CO., LTD.
    Inventors: Yoshihisa Yamamoto, Yoshinari Nakagawa, Yasunari Furuta, Shinya Katayama
  • Patent number: 10658892
    Abstract: A rotor for a rotating electrical machine, the rotor including: a rotor core having a magnet insertion hole extending in an axial direction that is a direction along a rotor rotational axis; and a permanent magnet fixed inside the magnet insertion hole with an adhesive, wherein the permanent magnet has a magnet-side flat surface that is formed as a rectangular flat surface, wherein the magnet insertion hole has, in an internal surface thereof, a hole-side flat surface that is formed as a flat surface facing the magnet-side flat surface, and wherein the adhesive is a foaming adhesive and is provided at least at four corners of the magnet-side flat surface, and a thickness of the adhesive at a center of the magnet-side flat surface is smaller than a thickness of the adhesive at the four corners.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: May 19, 2020
    Assignee: AISIN AW CO., LTD.
    Inventor: Shinya Katayama
  • Publication number: 20190097478
    Abstract: A rotor for a rotating electrical machine, the rotor including: a rotor core having a magnet insertion hole extending in an axial direction that is a direction along a rotor rotational axis; and a permanent magnet fixed inside the magnet insertion hole with an adhesive, wherein the permanent magnet has a magnet-side flat surface that is formed as a rectangular flat surface, wherein the magnet insertion hole has, in an internal surface thereof, a hole-side flat surface that is formed as a flat surface facing the magnet-side flat surface, and wherein the adhesive is a foaming adhesive and is provided at least at four corners of the magnet-side flat surface, and a thickness of the adhesive at a center of the magnet-side flat surface is smaller than a thickness of the adhesive at the four corners.
    Type: Application
    Filed: March 31, 2017
    Publication date: March 28, 2019
    Applicant: AISIN AW CO., LTD.
    Inventor: Shinya KATAYAMA
  • Publication number: 20190074740
    Abstract: A method of manufacturing a rotor includes: applying the adhesive to an adhesive placement position on an outer peripheral surface of the permanent magnet or an inner peripheral surface of the magnet hole, the adhesive containing an expansive agent that is expanded by being heated to a temperature that is equal to or higher than an expansion temperature; drying the adhesive after applying the adhesive; inserting the permanent magnet into the magnet hole of the rotor core after drying the adhesive; and fixing the permanent magnet and the rotor core to each other using the adhesive by expanding the expansive agent and curing the adhesive by heating the adhesive to a temperature that is equal to or higher than the expansion temperature after inserting the permanent magnet.
    Type: Application
    Filed: March 31, 2017
    Publication date: March 7, 2019
    Applicant: AISIN AW CO., LTD.
    Inventors: Hideharu USHIDA, Tetsuya MATSUBARA, Tetsuya TAKAHASHI, Shinya KATAYAMA
  • Publication number: 20170353067
    Abstract: A rotor for a rotary electric machine, the rotor including a rotor core that has a magnet hole; a permanent magnet inserted into the magnet hole; and an adhesive layer provided between the permanent magnet and a wall surface of the magnet hole and including a plurality of capsule bodies therein, the adhesive layer fixing the permanent magnet to the wall surface of the magnet hole, wherein the adhesive layer is provided only on a wall surface of the magnet hole on a first side, which is one of a wall surface of the magnet hole on an inner side in a radial direction and a wall surface on an outer side in the radial direction.
    Type: Application
    Filed: March 18, 2016
    Publication date: December 7, 2017
    Applicant: AISIN AW CO., LTD.
    Inventors: Yoshihisa YAMAMOTO, Yoshinari NAKAGAWA, Yasunari FURUTA, Shinya KATAYAMA
  • Publication number: 20140062244
    Abstract: A rotor for a rotary electric machine includes a rotor core, a permanent magnet, and a resin member. The rotor core has a magnet insertion hole. The permanent magnet is arranged in the magnet insertion hole of the rotor core. The resin member has a shape corresponding to a gap between the magnet insertion hole and the permanent magnet. The permanent magnet and the resin member are simultaneously inserted into the magnet insertion hole, and the permanent magnet is fixed in the magnet insertion hole by the resin member.
    Type: Application
    Filed: August 7, 2013
    Publication date: March 6, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shinya SANO, Shinya KATAYAMA
  • Patent number: 6607848
    Abstract: A high density recording medium excellent in a coercive force and excellent also in read write characteristics such as N/S ratio and thermal stability of the magnetic recording layer, and a magnetic recording apparatus employing it, are presented. A magnetic recording medium comprising a substrate and, formed sequentially thereon, at least a non-magnetic interlayer made of a Co alloy and a Co alloy magnetic recording layer, wherein the crystal structures of the interlayer and the magnetic recording layer are both hcp structures, and the relation between the crystal lattice constant (Li) of the interlayer and the crystal lattice constant (Lm) of the magnetic recording layer, satisfies the following formula: |Lm−Li|/Lm<0.019 and a magnetic recording apparatus employing it.
    Type: Grant
    Filed: May 1, 2001
    Date of Patent: August 19, 2003
    Assignee: Showa Denko K.K.
    Inventors: Masahiro Oka, Shinya Katayama
  • Patent number: 6365012
    Abstract: This invention relates to a magnetic recording medium having a structure in which an undercoating film, a magnetic thin film, a protective film, and an organic film are stacked on a substrate in the order named. Since the protective film contains carbon and silicon and a portion of silicon in at least an interface in contact with the organic film consists of a silicon oxide, the surface of the magnetic recording medium is not degraded even by frequent contact with a magnetic head upon driving or stopping of the magnetic recording medium. This invention also relates to a method of manufacturing the same.
    Type: Grant
    Filed: May 18, 1995
    Date of Patent: April 2, 2002
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Toshiyuki Sato, Shinya Katayama
  • Patent number: 6132843
    Abstract: A glass substrate for a magnetic disk of the present invention is one in which a laser beam is irradiated on a main surface thereby forming a large number of protrusions thereon to form texture thereon, each of said protrusions being formed by a protruded portion having a convex shape, said glass having a composition in which 0.2 to 3 wt % of an oxide of a transition metal is contained and an absorption coefficient with respect to a wavelength of a light at 266 nm being within a range of 0.03 to 2 .mu.m.sup.-1, and by setting the absorption coefficient of the glass with respect to a wavelength of a light at 266 nm within a range of 0.03 to 2 .mu.m.sup.-1 and irradiating a laser beam having a wavelength in a range of ultraviolet rays selectively on the main surface of a glass substrate at predetermined intervals, texture comprising a large number of protrusions formed by protruded portions each having a small diameter and a convex shape is formed.
    Type: Grant
    Filed: November 13, 1997
    Date of Patent: October 17, 2000
    Assignee: Nippon Sheet Glass Do., Ltd.
    Inventors: Yasunao Kuroda, Yoshihiro Matsuno, Shinya Katayama, Akihiro Koyama, Jyunji Kurachi
  • Patent number: 5638479
    Abstract: The optical parts according to the invention have a feature of having smoothly coated surfaces for incident and emergent lights covered thereover with a light transmitting solid coating layer, and can be manufactured by a simplified process at least without needing polishing, together with the advantages of being weatherproof in atmosphere of high temperature and high humidity and antiozonant.
    Type: Grant
    Filed: December 17, 1991
    Date of Patent: June 10, 1997
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Manabu Takami, Noboru Akazawa, Atsunori Matsuda, Yoshihiro Matsuno, Shinya Katayama, Toshio Tsuno
  • Patent number: 5427867
    Abstract: A substrate used for magnetic disk comprising s non-magnetic support in which a material for forming pits is formed on the surface, wherein the material for forming the surface pits comprises a low melting metal and has an island structure discontinuous in the direction within the plane at the surface of the non-magnetic support, thereby enabling to produce a magnetic disk of excellent magnetic property at high productivity, as well as a magnetic recording medium using such a substrate.
    Type: Grant
    Filed: June 3, 1994
    Date of Patent: June 27, 1995
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Toshihiro Kogure, Tomoyasu Shimizu, Toshiyuki Sato, Shinya Katayama
  • Patent number: 5234717
    Abstract: Disclosed herein is a process for producing a minute-patterned substrate required for optical disk substrates for information recording or the like, which process comprises forming a coating film of a solution containing a metal-organic compound and a thickener on a substrate, pressing a mold against the coating film on the substrate under a reduced pressure and heating the coating film to set up the coating film, then removing the mold, and heating the set coating film on the substrate. By the process it is possible to provide the substrate surface with a minute rough pattern, without generation of surface defects arising from the pressing of the mold against the coating film, and to set up the coating film in a short time and with good dimensional accuracy. It is therefore possible to produce a rough surface pattern with high productivity.
    Type: Grant
    Filed: October 19, 1992
    Date of Patent: August 10, 1993
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Yoshihiro Matsuno, Atsunori Matsuda, Shinya Katayama
  • Patent number: 5055359
    Abstract: In a magnetic recording medium having a layer of a perfluoroalkylpolyether-based liquid lubricant as an uppermost layer, the liquid lubricant has an atomic group including an aromatic ring at a terminal end of a perfluoropolyether main chain, and is coated on an inorganic oxide. Therefore, adhesion force of the lubricant is greatly improved, and interaction within the lubricant can be decreased, thus realizing a magnetic recording medium having excellent lubricity and wear resistance.
    Type: Grant
    Filed: February 20, 1991
    Date of Patent: October 8, 1991
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Toshio Tsuno, Shinya Katayama, Shinya Kawakita, Tomoyasu Shimizu
  • Patent number: 4810547
    Abstract: A substrate provided thereon, with a film having a large number of fine grooves of a desired pattern is herein disclosed, which comprises a body of substrate and a film of at least one polymerized-condensed or crosslinked organometal compound formed on the substrate and having a large number of fine grooves on the surface and which can be produced by applying a solution containing at least one organometal compound and optionally a thickening agent to the surface of a body of substrate to form a film thereon; then impressing the film with a mold having a large number of fine ridges thereon to form grooves corresponding to the ridges, on the film; or applying the solution to the mold to form such a film and transferring the film to the body of substrate; and then calcining the resulting film having fine grooves to solidify the same. According to the method, an excellent substrate having good durability and optical properties can be produced simply and in a good yield.
    Type: Grant
    Filed: March 26, 1987
    Date of Patent: March 7, 1989
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Tsutomu Minami, Noboru Tohge, Shinya Katayama, Yoshihiro Matsuno