Patents by Inventor Ryuichi Nishimura

Ryuichi Nishimura 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: 12594998
    Abstract: A stiffened panel structure includes a panel-shaped component and a wire. The panel-shaped component has a panel body that curves in such a manner as to be convex outward. The wire has a first end portion and a second end portion. The first end portion is bonded to a first point on the inner surface of the panel body. The second end portion is bonded to a second point on the inner surface of the panel body. The wire is strained between the first point and the second point.
    Type: Grant
    Filed: February 26, 2021
    Date of Patent: April 7, 2026
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Kenichiro Otsuka, Toru Yonebayashi, Satoshi Shirakami, Yasunori Sawa, Masafumi Azuma, Ryuichi Nishimura
  • Patent number: 12522907
    Abstract: A blank sheet which is a material for an outer plate component for an automobile includes a steel sheet. A rolling direction of the steel sheet extends along a longitudinal direction of the blank sheet, and a thickness is 0.6 mm or less. The steel sheet may have a chemical composition in which arithmetic average waviness Wa is 0.10 to 0.30 ?m. The steel sheet may have a chemical composition in which ?C calculated from C20 that is a C content at a depth position of 20 ?m from a surface, C60 that is a C content at a depth position of 60 ?m from the surface, and Expression (1) is 0.20 to 0.90 mass %/mm, and a tensile strength is 500 MPa or greater, ?C=(C60?C20)/(0.04)??(1).
    Type: Grant
    Filed: August 27, 2021
    Date of Patent: January 13, 2026
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Ryuichi Nishimura, Yasuhiro Ito, Yasunori Sawa, Koichi Hamada, Satoshi Hironaka
  • Patent number: 12441406
    Abstract: A stiffened panel structure includes a panel-shaped component and a wire. The panel-shaped component has a panel body that curves in such a manner as to be convex outward. The wire has a first end portion and a second end portion. The first end portion is bonded to a first point on the inner surface of the panel body. The second end portion is bonded to a second point on the inner surface of the panel body. The wire is strained between the first point and the second point.
    Type: Grant
    Filed: February 26, 2021
    Date of Patent: October 14, 2025
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Kenichiro Otsuka, Toru Yonebayashi, Satoshi Shirakami, Yasunori Sawa, Masafumi Azuma, Ryuichi Nishimura
  • Publication number: 20250313069
    Abstract: An outer panel includes a ridgeline and a surface portion adjacent to both sides of the ridgeline on an outer surface. The outer panel has a sheet thickness of less than 0.6 mm and an attainable yield stress of 360 MPa or more. The surface portion includes an adjacent region adjacent to the ridgeline and a separation region adjacent to the adjacent region on an opposite side of the ridgeline. Evaluations of surface properties of the adjacent region and the separation region are consistent with each other.
    Type: Application
    Filed: May 16, 2023
    Publication date: October 9, 2025
    Inventors: Yasunori SAWA, Ryuichi NISHIMURA
  • Publication number: 20250303832
    Abstract: This impact-absorbing member for an automobile door is an impact-absorbing member for an automobile door formed from a blank, which is a single-piece blank or a tailored blank, and includes: a connection band portion extending in a first direction; and at least three connected portions each having one end connected to the connection band portion and extending in a second direction intersecting the first direction, in which the connected portion has an impact-absorbing portion that is a closed cross-sectional structure.
    Type: Application
    Filed: June 23, 2023
    Publication date: October 2, 2025
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Toshiya SUZUKI, Masahiro NAKATA, Ryuichi NISHIMURA
  • Publication number: 20250108864
    Abstract: In an automobile hood, further enhancement of pedestrian protection properties when a pedestrian collides with a rear part of the automobile hood is enabled. An inner panel 2 of an automobile hood 1 includes: a pedestal 7; a plurality of units 9 each including an inclined wall 12 rising from the pedestal 7, and a flange 11; and beads 21 and 22 including at least one of a structure for connecting together outer end portions 55 of the inner panel 2 in a height direction Z perpendicular to a sheet thickness direction of the inner panel 2 and a structure for connecting an outer circumferential portion 73 of the pedestal 7 and the outer end portion 55. A plurality of the beads 21 and 22 are provided, and are arranged on a rear portion 1a side of the inner panel 2.
    Type: Application
    Filed: February 27, 2023
    Publication date: April 3, 2025
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Katsunari NORITA, Yasunori SAWA, Ryuichi NISHIMURA
  • Patent number: 12220737
    Abstract: A method of manufacturing a press-formed product includes: capturing the sheet thickness of a sheet B; and using a die 6, a punch 7, and a movable mold part capable of moving relative to both the die 6 and punch 7 to press-form the sheet B into a press-formed product. During press-forming, the initial position of the movable mold part relative to the die 6 or punch 7 is controlled depending on the sheet thickness of the sheet B.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: February 11, 2025
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Ryuichi Nishimura, Toshiya Suzuki
  • Publication number: 20250035172
    Abstract: A disc brake device includes a rotary member, a brake disc, and an airflow-rate restriction member. The brake disc includes a disc body and a plurality of fins. The airflow-rate restriction member includes a base plate and a protruding portion. The base plate is sandwiched between the rotary member and the fins. The protruding portion is arranged inward in the radial direction of the disc body with respect to the fins. The protruding portion protrudes from the base plate toward a disc body side. The protruding portion extends in the circumferential direction of the disc body.
    Type: Application
    Filed: October 31, 2022
    Publication date: January 30, 2025
    Inventors: Ayumi UENISHI, Takahiro FUJIMOTO, Hiroshi NOGAMI, Mitsuhiro OKAMOTO, Naruo MIYABE, Yuki ICHIKAWA, Takanori KATO, Ryuichi NISHIMURA, Yuiko SHIOTANI
  • Patent number: 12157430
    Abstract: An automobile hood 1 has an inner panel 2, an outer panel 3, and a plurality of linear sealer regions A in which joints 21 are arranged. A region which includes the linear sealer region A and in which both ends in a longitudinal direction L of the linear sealer region A reach the outer circumferential edge of the inner panel 2 is defined as an end-to-end region B. Each of three longest linear sealer regions A2, A4 and A3 among the plurality of linear sealer regions A is a length that is 40% or more of the length of an end-to-end region B2, B4 or B3 to which the linear sealer regions A2, A4 or A3 belongs, respectively. These three end-to-end regions B2, B4 and B3 do not intersect with each other within a region surrounded by the outer circumferential edge of the inner panel 2.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: December 3, 2024
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Ryuichi Nishimura, Koichi Hamada, Yasunori Sawa, Tohru Yoshida
  • Publication number: 20240352565
    Abstract: This outer plate component for an automobile includes a steel sheet, and a rolling direction of the steel sheet extends along a vehicle body left-right direction in plan view.
    Type: Application
    Filed: August 27, 2021
    Publication date: October 24, 2024
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Ryuichi NISHIMURA, Yasuhiro ITO, Yasunori SAWA, Koichi HAMADA, Satoshi HIRONAKA
  • Publication number: 20240343096
    Abstract: This panel structure for an automobile (10) includes: an outer panel member (1) having a sheet shape; a resin member (2) that is disposed on an inner surface of the outer panel member (1); and an adhesive portion (3) that bonds the outer panel member (1) and the resin member (2), in which the outer panel member (1) includes a base metal (12) and a coating film (14) provided on the base metal (12), the base metal (12) has a sheet thickness of 0.3 mm to 0.5 mm, the resin member (2) has a bending rigidity of 0.3×106 N·mm2 or more, and the adhesive portion (3) contains a cured material of a room-temperature curing adhesive.
    Type: Application
    Filed: August 29, 2022
    Publication date: October 17, 2024
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Yutaka YAKUSHIJIN, Ryuichi NISHIMURA, Yasunori SAWA
  • Patent number: 12109601
    Abstract: A method for manufacturing a press-formed product suppresses occurrence of a forming defect such as a crack in a starting material during press forming, and also suppresses occurrence of problems when transferring a starting material during press forming. A manufacturing intermediate is formed by forming, in a flat-sheet shaped blank sheet, a planned outline portion including an undulating shape which is used for forming an outline of an outer circumferential portion of a press-formed product. The flat shape of the blank sheet is maintained in a region from the planned outline portion toward the center of the manufacturing intermediate, or an intermediate stretch-formed portion having a predetermined intermediate forming height is formed in the manufacturing intermediate in the region. A through-hole is formed by piercing a flat portion at which the flat shape is maintained or a stretch-formed-side top portion of the intermediate stretch-formed portion.
    Type: Grant
    Filed: August 6, 2020
    Date of Patent: October 8, 2024
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Shohei Yamazaki, Ryuichi Nishimura, Koichi Hamada, Takuya Oishi, Tohru Yoshida
  • Patent number: 12031597
    Abstract: A brake disk unit includes a rotating member, a brake disk, and a control member. The brake disk includes a disk main body, fins, and convex portions and/or concave portions. The control member includes a support portion and a projecting portion. At least a part of the projecting portion is arranged between fins that are adjacent in the circumferential direction of the brake disk. A gap is formed between the projecting portion and the brake disk. On the surface of the brake disk, the convex portions and/or the concave portions are provided further on the outer side in the radial direction of the brake disk than a minimum opening portion of the gap.
    Type: Grant
    Filed: September 9, 2020
    Date of Patent: July 9, 2024
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Hiroshi Nogami, Takahiro Fujimoto, Yuiko Shiotani, Ryuichi Nishimura, Mitsuhiro Okamoto, Kumpei Sano, Naruo Miyabe, Yuki Ichikawa
  • Publication number: 20240191762
    Abstract: A disc brake device includes a rotary member, a brake disc, and a control member. The brake disc includes a disc body having an annular shape and fins. The control member controls an airflow rate between the fins disposed adjacent to each other in a circumferential direction of the brake disc. The control member includes a base plate and a protruding portion. The protruding portion protrudes from the base plate toward the disc body. A top surface of each fin has a recessed portion. The protruding portion extends in the circumferential direction through from the recessed portion of one of the fins disposed adjacent to each other to the recessed portion of the other of the fins.
    Type: Application
    Filed: May 14, 2021
    Publication date: June 13, 2024
    Inventors: Takahiro FUJIMOTO, Yuiko SHIOTANI, Hiroshi NOGAMI, Ryuichi NISHIMURA, Takanori KATO, Yuki ICHIKAWA, Naruo MIYABE
  • Publication number: 20240190514
    Abstract: An automobile hood 1 has joints 20. The inner panel 2 includes, for example, units 8 and 9 arranged in plurality in an aligned relationship in a cross direction X and arranged in plurality in an aligned relationship in a longitudinal direction Y. The plurality of units 8 and 9 include a plurality of joint-equipped units. In the first form, in some of the joint-equipped units, namely, joint-equipped units 84, 89, and 9, the joints 20 are arranged in an arrangement including a predetermined pattern P1, and in the remaining joint-equipped units 81, 85, 86, 810, 811, and 812, the joints 20 are arranged in an arrangement including a part of the predetermined pattern P1. In the second form, in each of the joint-equipped units 8 and 9, a plurality of the joints 20 are arranged in an arrangement including the predetermined pattern P1.
    Type: Application
    Filed: June 6, 2022
    Publication date: June 13, 2024
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Ryuichi NISHIMURA, Yasunori SAWA, Koichi HAMADA
  • Publication number: 20240182121
    Abstract: A vehicle panel structure has: a sheet-like outer panel member; an inner member disposed to face an inner surface of the outer panel member; and a resin member of which a material is a resin and which is joined to the inner surface of the outer panel member, and at least part of the inner member is buried in the resin member.
    Type: Application
    Filed: February 25, 2022
    Publication date: June 6, 2024
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Yutaka YAKUSHIJIN, Ryuichi NISHIMURA, Yasunori SAWA
  • Publication number: 20240166268
    Abstract: An automobile hood 1 has a first-direction joint row 30 in which a plurality of joints 20 are arranged at an interval from each other in a cross direction X, and a second-direction joint row 40 in which a plurality of the joints 20 are arranged at an interval from each other in a longitudinal direction Y. A curvature 1/R1 in a direction along the first-direction joint row 30 in a region of the outer panel 3 corresponding to the first-direction joint row 30 is smaller than a curvature 1/R2 in a direction along the second-direction joint row 40 in a region of the outer panel 3 corresponding to the second-direction joint row 40. An interval X1 between the joints 20 in the first-direction joint row 30 is greater than an interval Y2 between the joints 20 in the second-direction joint row 40.
    Type: Application
    Filed: June 6, 2022
    Publication date: May 23, 2024
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Yasunori SAWA, Ryuichi NISHIMURA, Koichi HAMADA
  • Patent number: 11975765
    Abstract: There is provided an exterior panel including a steel sheet, the steel sheet including a flat portion, wherein in an outer-layer region of the flat portion, a microstructure contains, in volume fraction, ferrite of 80% or more, an average grain diameter of ferrite is 1.0 to 15.0 ?m, an intensity ratio XODF{001}/{111},S of ferrite is 0.30 or more to less than 3.50, when uEl1 denotes a uniform elongation measured with a tensile test specimen cut from the flat portion, and uEl2 denotes a theoretical uniform elongation that is derived from volume fractions, hardnesses, and average grain diameters of ferrite and martensite in a microstructure of an inside region of the flat portion, and a sheet thickness of the flat portion, uEl1/uEl2 is 0.44 to 0.80.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: May 7, 2024
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Yasunori Sawa, Mai Nagano, Ryuichi Nishimura
  • Publication number: 20240124068
    Abstract: An automobile panel 1 has a sheet-shaped outer panel 2 and a sheet-shaped inner panel 3, and an interior member 30 arranged in a space S between the inner panel 3 and the outer panel 2. The interior member 30 is an elongated member that extends in a first direction D1 along the outer panel 2, and includes a first end 41 that is one end in the first direction D1, and a second end 42 that is another end. The first end 41 has a first connecting portion 45 which is connected to the inner panel 3. The interior member 30 has a second connecting portion 46 that is connected to the outer panel 2, at a position that is separated from the first end 41 along the first direction D1.
    Type: Application
    Filed: January 21, 2022
    Publication date: April 18, 2024
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Yasunori SAWA, Ryuichi NISHIMURA
  • Patent number: 11878334
    Abstract: A method of manufacturing a press-formed product includes: capturing the amount of warp in a sheet to be pressed separately for each sheet; and using a die 6, a punch 7, and a movable mold part to press-form the sheet into a press-formed product. During press-forming, the initial position of the movable mold part 9 relative to the die 6 or punch 7 is controlled depending on the amount of warp in the sheet.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: January 23, 2024
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Ryuichi Nishimura, Toshiya Suzuki