Patents by Inventor Tohru Yoshida

Tohru Yoshida 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: 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
  • Publication number: 20240332373
    Abstract: A semiconductor device includes a semiconductor substrate with an upper surface and a lower surface, including an n-type semiconductor region having a hydrogen containing region. A carrier concentration distribution representing a carrier concentration by a semi-logarithmic graph in the depth direction of the n-type semiconductor region includes a flat portion containing a first flat part and a second flat part located closer to the lower surface of the semiconductor substrate than the first plat part, and a slope located between the first flat part and the second flat part.
    Type: Application
    Filed: June 13, 2024
    Publication date: October 3, 2024
    Inventors: Yoshiharu KATO, Toru AJIKI, Tohru SHIRAKAWA, Misaki TAKAHASHI, Kaname MITSUZUKA, Takashi YOSHIMURA, Yuichi ONOZAWA, Hiroshi TAKISHITA, Soichi YOSHIDA
  • Patent number: 12030105
    Abstract: This structural member is manufactured using a structural member manufacturing device including a first clamping part having a first lower clamping member and a second upper clamping member disposed to face each other and capable of being opened and closed; a second clamping part having a third lower clamping member and a fourth upper clamping member disposed to face each other corresponding to the first lower clamping member and the second upper clamping member and capable of being opened and closed; and clamping part driver for allowing the first clamping part and the second clamping part to be relatively separated from each other while causing a position in an X-axis direction and a position in a Z-axis direction to correspond to each other.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: July 9, 2024
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Satoshi Shirakami, Yasuharu Tanaka, Koichi Sato, Shigeru Yonemura, Tohru Yoshida
  • Patent number: 11912341
    Abstract: In an automobile hood, sufficient panel rigidity and dent resistance are secured while achieving weight reduction. Automobile hood 1 has a panel 2, a reinforcing member 3, and a joint 4 that joins the panel 2 and the reinforcing member 3. The reinforcing member 3 includes a structure formed from a plurality of units 7 having a hexagonal annular shape disposed in a close-packed arrangement. Unit 7 has a floor 11, inclined wall 12 and top plate 13. The floor 11 is adjacent to the panel 2. Top plate 13 and panel 2 are separated from each other. The inclined wall 12 is arranged between the floor 11 and the top plate 13. A hexagonal annular first ridge line 31 of the unit 7 is located between the inclined wall 12 and the floor 11. A length L1 of one side of the first ridge line 31 is 40-75 mm.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: February 27, 2024
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Tohru Yoshida, Koichi Hamada, Takeshi Kawachi, Atsuo Koga, Takuya Oishi
  • Publication number: 20240033804
    Abstract: A shearing method of a plate-shaped workpiece for applying a shear force in a thickness direction of the plate-shaped workpiece includes: a step for starting applying the shear force on the workpiece with a clearance between action points in a surface direction orthogonal to the thickness direction of the workpiece; a step for applying the shear force after the start of applying the shear force until a fractured surface is created in the workpiece; and a step for increasing the clearance depending on a deformation of the workpiece in the thickness direction after starting applying the shear force until the fractured surface is created in the workpiece.
    Type: Application
    Filed: October 10, 2023
    Publication date: February 1, 2024
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Takashi YASUTOMI, Shigeru YONEMURA, Tohru YOSHIDA
  • Patent number: 11884332
    Abstract: In an automobile hood, sufficient panel rigidity and dent resistance of a panel are secured while achieving weight reduction. An automobile hood having panel, reinforcing member and joint that joins the panel and the reinforcing member such that the reinforcing member includes a structure formed from a plurality of units having hexagonal annular shape disposed in a close-packed arrangement. Floor of the unit has an annular end part. All of annular end part is located between first circle and second circle wherein first circle is inscribed within a first ridge line overlapping with an outer end part of the floor. Second circle is concentric with first circle and has a radius that is 60% of a radius of the first circle. Width of upper face of floor is 2 mm or more over the entire area of the annular end part in the circumferential direction of the annular end part.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: January 30, 2024
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Tohru Yoshida, Koichi Hamada, Takeshi Kawachi, Atsuo Koga, Takuya Oishi
  • Patent number: 11819899
    Abstract: A shearing method of a plate-shaped workpiece for applying a shear force in a thickness direction of the plate-shaped workpiece includes: a step for starting applying the shear force on the workpiece with a clearance between action points in a surface direction orthogonal to the thickness direction of the workpiece; a step for applying the shear force after the start of applying the shear force until a fractured surface is created in the workpiece; and a step for increasing the clearance depending on a deformation of the workpiece in the thickness direction after starting applying the shear force until the fractured surface is created in the workpiece.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: November 21, 2023
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Takashi Yasutomi, Shigeru Yonemura, Tohru Yoshida
  • Patent number: 11787478
    Abstract: In an automobile inner panel and an automobile panel that includes the automobile inner panel, panel rigidity of the panel is secured while achieving a weight reduction. An automobile inner panel 2 has a plurality of sub-units 10 that each include a flange 11, an inclined wall 12 continuous with the flange 11, and a bottom portion 13 continuous with inclined wall 12 and separated from the flange 11. The bottom portions 13 and 13 of the sub-units 10 and 10 which are adjacent to each other are butted against each other and are directly continuous with each other. A maximum value of a distance D1 between two of the flanges 11 and 11 of two of the sub-units 10 and 10 in which the bottom portions 13 are arranged separated from each other and which are adjacent to each other is 250 mm or less.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: October 17, 2023
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Ryuichi Nishimura, Koichi Hamada, Atsuo Koga, Takeshi Kawachi, Yasunori Sawa, Tohru Yoshida
  • Publication number: 20230314915
    Abstract: An imaging device cover includes a cover member including at least a partial region that transmits incident light, and a first adhesive layer provided on a cover peripheral portion that is a peripheral portion of the cover member. While covering an object cover that guides reflected light from a target to a lens of an imaging device, the cover member is peelably attached to the imaging device including the object cover via the first adhesive layer.
    Type: Application
    Filed: August 20, 2021
    Publication date: October 5, 2023
    Applicant: CASIO COMPUTER CO., LTD.
    Inventors: Yoshiharu HOUJOU, Tohru YOSHIDA
  • DIE
    Publication number: 20230150006
    Abstract: The die includes a die base, a die body, and an opening/closing member. In the die base, a storage portion for storing refrigerant is formed. The die body includes a mounting surface, a forming surface, and a plurality of flow channels. The mounting surface is located on the storage portion side of the die base. The forming surface is located on the opposite side of the mounting surface. The flow channels pass through the die body from the mounting surface to the forming surface. The opening/closing member is disposed between the die base and the die body. The opening/closing member includes a plurality of through holes corresponding to the plurality of flow channels. The opening/closing member is configured to be movable with respect to the die base and the die body such that each of the through holes brings the corresponding flow channel and the storage portion into communication.
    Type: Application
    Filed: March 19, 2021
    Publication date: May 18, 2023
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Naruhiko NOMURA, Toshiya SUZUKI, Kenta UENISHI, Tohru YOSHIDA
  • Patent number: 11639087
    Abstract: Provided is an automobile door (600) including: a first impact absorbing member (122) that traverses the automobile door (600) so as to extend between both end portion regions in a vehicle height direction; a second impact absorbing member (124) that traverses the automobile door (600) so as to extend between both end portion regions in a vehicle length direction; an exterior material (110); and a belt line reinforcement (300), in which bending rigidity in a vehicle width direction of a cross section perpendicular to an extending direction of the belt line reinforcement (300) at a support portion is larger than bending rigidity in the vehicle width direction of a cross section perpendicular to an extending direction of the first impact absorbing member (122) at an intersection portion.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: May 2, 2023
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Toshiya Suzuki, Satoshi Hirose, Tohru Yoshida, Yoshiaki Nakazawa
  • Publication number: 20230118245
    Abstract: An illumination control device includes an image data acquirer, a control data acquirer, and a light source controller. The image data acquirer acquires target imaging-related data related to the target imaging in a case in which target imaging is performed in which an image of an inserter inserted into a hole part continuous with a target is captured by an imaging device together with the target. The control data acquirer acquires control data based on the acquired target imaging-related data. The light source controller controls an illumination state of a light source provided around an optical axis of the imaging device, based on the acquired control data.
    Type: Application
    Filed: February 12, 2021
    Publication date: April 20, 2023
    Applicant: CASIO COMPUTER CO., LTD.
    Inventors: Tohru YOSHIDA, Katsuyuki MATSUO
  • Publication number: 20230112540
    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: Application
    Filed: March 29, 2021
    Publication date: April 13, 2023
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Ryuichi NISHIMURA, Koichi HAMADA, Yasunori SAWA, Tohru YOSHIDA
  • DIE
    Publication number: 20230063824
    Abstract: A die includes a die body and a removable shell. The die body includes a supply flow channel formed inside the die body. One end of the supply flow channel opens at the surface of the die body. The supply flow channel is to be supplied with a fluid for temperature adjustment. The removable shell is mounted removably to the surface of the die body. The removable shell includes an outer surface that constitutes at least a part of the forming surface of the die. A temperature adjustment space is provided in the surface of the die body or in the removable shell. The temperature adjustment space is in communication with the supply flow channel. The removable shell is divided into a plurality of shell pieces. The plurality of shell pieces are arranged in a direction intersecting the longitudinal direction of the die on the surface of the die body.
    Type: Application
    Filed: March 19, 2021
    Publication date: March 2, 2023
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Naruhiko NOMURA, Toshiya SUZUKI, Kenta UENISHI, Tohru YOSHIDA
  • Publication number: 20220331855
    Abstract: This structural member (W1) is manufactured using a structural member manufacturing device including: a first clamping part (10) having a first lower clamping member (11) and a second upper clamping member (12) disposed to face each other and capable of being opened and closed; a second clamping part (20) having a third lower clamping member (21) and a fourth upper clamping member (22) disposed to face each other corresponding to the first lower clamping member (11) and the second upper clamping member (12) and capable of being opened and closed; and clamping part driving means for allowing the first clamping part (10) and the second clamping part (20) to be relatively separated from each other while causing a position in an X-axis direction and a position in a Z-axis direction to correspond to each other.
    Type: Application
    Filed: September 25, 2020
    Publication date: October 20, 2022
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Satoshi SHIRAKAMI, Yasuharu TANAKA, Koichi SATO, Shigeru YONEMURA, Tohru YOSHIDA
  • Publication number: 20220274150
    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: Application
    Filed: August 6, 2020
    Publication date: September 1, 2022
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Shohei YAMAZAKI, Ryuichi NISHIMURA, Koichi HAMADA, Takuya OISHI, Tohru YOSHIDA
  • Publication number: 20220167852
    Abstract: An illumination device for an imager for imaging a target includes an objective cover including a light transmissive member to direct light from the target to the imager to allow the imager to image the target, and at least one light source located nearer the imager than the objective cover to illuminate the target through the objective cover. The at least one light source is located outward from an inverted region that is a region formed by substantially inverting, toward the imager and with respect to the objective cover, a region defined by predetermined rays of rays nearer the target from the objective cover in a pencil of rays, the pencil of rays entering, through the imaging lens, the image sensor from the target in contact with the objective cover and in focus with the imaging lens.
    Type: Application
    Filed: January 20, 2020
    Publication date: June 2, 2022
    Applicant: CASIO COMPUTER CO., LTD.
    Inventors: Tohru YOSHIDA, Katsuyuki MATSUO
  • Publication number: 20220126926
    Abstract: In an automobile inner panel and an automobile panel that includes the automobile inner panel, panel rigidity of the panel is secured while achieving a weight reduction. An automobile inner panel 2 has a plurality of sub-units 10 that each include a flange 11, an inclined wall 12 continuous with the flange 11, and a bottom portion 13 continuous with inclined wall 12 and separated from the flange 11. The bottom portions 13 and 13 of the sub-units 10 and 10 which are adjacent to each other are butted against each other and are directly continuous with each other. A maximum value of a distance D1 between two of the flanges 11 and 11 of two of the sub-units 10 and 10 in which the bottom portions 13 are arranged separated from each other and which are adjacent to each other is 250 mm or less.
    Type: Application
    Filed: December 27, 2019
    Publication date: April 28, 2022
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Ryuichi NISHIMURA, Koichi HAMADA, Atsuo KOGA, Takeshi KAWACHI, Yasunori SAWA, Tohru YOSHIDA
  • Publication number: 20220126349
    Abstract: A manufacturing method of a member according to an aspect of the present invention is a manufacturing method of a member including a specific three-dimensional tubular portion, the manufacturing method including: a U-forming step of performing U-forming on metal material sheet using a U-forming die and punch including a U-forming punch to manufacture a U-formed article having a recessed cross-sectional shape; and an O-forming step of causing side end portions of the U-formed article to abut each other by an O-forming die to form abutting portions, in which a forming condition ratio a=Du/Do is set to 0.85 to 0.95.
    Type: Application
    Filed: March 27, 2020
    Publication date: April 28, 2022
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Masahiko SATO, Tohru YOSHIDA
  • Publication number: 20220097773
    Abstract: In an automobile hood, sufficient panel rigidity and dent resistance are secured while achieving weight reduction. Automobile hood 1 has a panel 2, a reinforcing member 3, and a joint 4 that joins the panel 2 and the reinforcing member 3. The reinforcing member 3 includes a structure formed from a plurality of units 7 having a hexagonal annular shape disposed in a close-packed arrangement. Unit 7 has a floor 11, inclined wall 12 and top plate 13. The floor 11 is adjacent to the panel 2. Top plate 13 and panel 2 are separated from each other. The inclined wall 12 is arranged between the floor 11 and the top plate 13. A hexagonal annular first ridge line 31 of the unit 7 is located between the inclined wall 12 and the floor 11. A length L1 of one side of the first ridge line 31 is 40-75 mm.
    Type: Application
    Filed: December 27, 2019
    Publication date: March 31, 2022
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Tohru YOSHIDA, Koichi HAMADA, Takeshi KAWACHI, Atsuo KOGA, Takuya OISHI