Patents by Inventor Katsuya Nakano

Katsuya Nakano 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: 20240236512
    Abstract: A control apparatus comprises: an acquisition unit that acquires information about a subject from a plurality of image capturing apparatuses connected to an image capturing system via a communication network; a determination unit that determines a reference apparatus among the plurality of image capturing apparatuses, which serves as a reference for synchronizing time between the plurality of image capturing apparatuses based on the acquired information about the subject; and a communication unit that communicates information indicating whether or not each image capturing apparatus is the reference apparatus to each of the plurality of image capturing apparatuses. The plurality of image capturing apparatuses are capable of synchronous shooting in synchronization with the time of the reference apparatus.
    Type: Application
    Filed: January 8, 2024
    Publication date: July 11, 2024
    Inventor: Katsuya NAKANO
  • Publication number: 20240167113
    Abstract: This steel plate has a predetermined composition in which the proportion of ferrite and bainite in total is 10 to 60%, the proportion of martensite and tempered martensite in total is 40 to 90%, the proportion of pearlite and retained austenite in total is 0 to 10%, the ratio of the number of crystal grains of the ferrite and the bainite having an area of 3 ?m2 or less to the total number of crystal grains of the ferrite and the bainite is 40% or more, a proportion of crystal grains of the ferrite and the bainite having an area of 30 ?m2 or more is 5% or less, and a difference ?Mn between an Mn concentration at a position of 1.0 ?m from an interface of the ferrite and the martensite in a direction perpendicular to the interface inward into the ferrite grains and a maximum Mn concentration in a region up to 0.5 ?m from the interface is 1.00 mass % or less.
    Type: Application
    Filed: March 25, 2022
    Publication date: May 23, 2024
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Kengo TAKEDA, Katsuya NAKANO, Kyohei ISHIKAWA
  • Publication number: 20240158011
    Abstract: Provided is a frame member formed by cold-pressing a steel sheet. The frame member has a closed cross section portion in which a cross section perpendicular to a longitudinal direction is a closed cross section, and the closed cross section portion has at least one flat part having a radius of curvature larger than a maximum external dimension of the cross section. A Vickers hardness of a thickness middle portion in a reference flat part is 300 Hv or greater, a width of the reference flat part is 2.0 times or less the effective width, and a standard deviation ratio obtained by dividing a standard deviation of hardness frequency distribution in a surface layer portion in the reference flat part by a standard deviation of hardness frequency distribution in the thickness middle portion in the reference flat part is greater than 1.0.
    Type: Application
    Filed: April 26, 2022
    Publication date: May 16, 2024
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Takahiro AITOH, Kengo TAKEDA, Katsuya NAKANO, Yuri TODA
  • Publication number: 20240158882
    Abstract: A steel sheet excellent in energy absorption at the time of crushing deformation, that is, steel sheet having a predetermined chemical composition and steel microstructure which has on the sheet surface a plurality of step differences having height differences of more than 5.0 ?m at intervals of 2.0 mm or less.
    Type: Application
    Filed: February 7, 2022
    Publication date: May 16, 2024
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Kengo TAKEDA, Katsuya NAKANO
  • Publication number: 20240150863
    Abstract: Steel sheet able to reduce die damage at the time of cold pressing, that is, steel sheet having a predetermined chemical composition and steel microstructure which has on the sheet surface a plurality of step differences having height differences of more than 5.0 ?m at intervals of 2.0 mm or less.
    Type: Application
    Filed: February 7, 2022
    Publication date: May 9, 2024
    Applicant: NIPPON STEEL CORPORATION
    Inventor: Katsuya NAKANO
  • Patent number: 11970752
    Abstract: Provided are: a steel sheet having a high strength and excellent hydrogen embrittlement resistance; and a method of producing the same. The steel sheet has prescribed chemical composition and structure, in which a standard deviation ? of Mn concentration satisfies ??0.15 Mnave (wherein, Mnave represents an average Mn concentration) and a region with a Mn concentration of higher than (Mnave+1.3?) has a circle-equivalent diameter of less than 10.0 ?m. The method of producing the steel sheet includes: the hot rolling step that includes finish rolling a slab having a prescribed chemical composition under prescribed conditions; the step of coiling the thus obtained hot-rolled steel sheet at a coiling temperature of 450 to 700° C.; and the step of cold rolling the hot-rolled steel sheet and subsequently annealing this steel sheet at 800 to 900° C.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: April 30, 2024
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Kengo Takeda, Hiroyuki Kawata, Takafumi Yokoyama, Katsuya Nakano
  • Publication number: 20240106281
    Abstract: A power supply apparatus performs control so as to perform first search processing for detecting a power reception apparatus based on at least one communication method from among a plurality of communication methods, before performing power supply to the power reception apparatus detected in the first search processing, to perform second search processing for detecting a communication apparatus other than the power reception apparatus based on at least one communication method from among the plurality of communication methods, and if a communication apparatus other than the power reception apparatus is not detected in the second search processing, to transition to a state where power supply to the power reception apparatus is possible.
    Type: Application
    Filed: December 4, 2023
    Publication date: March 28, 2024
    Inventors: Iori Aikawa, Katsuya Nakano
  • Patent number: 11898219
    Abstract: A steel sheet including a steel micro-structure containing, in volume fraction, tempered martensite: 85% or more, retained austenite: 5% or more to less than 15%, and ferrite, pearlite, bainite, and as-quenched martensite being less than 10% in total, when contents of Mn and C in the retained austenite are denoted by MnA and CA, and when contents of Mn and C in a matrix are denoted by MnM and CM, respectively, following Formulas (1) to (3) are satisfied, and the number of carbides having an equivalent circle radius of 0.1 ?m or more is 100 or less in a region measuring 20000 ?m2, and the steel sheet has a tensile strength of 1100 MPa or more. The steel sheet is excellent in crash resistance and formability. MnA/MnM?1.2??(1) CA/CM?5.0??(2) CA?1.
    Type: Grant
    Filed: June 26, 2020
    Date of Patent: February 13, 2024
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Katsuya Nakano, Kengo Takeda, Hiroyuki Kawata, Akihiro Uenishi
  • Publication number: 20230378683
    Abstract: A connector includes a casing, a shield shell that accommodates the casing, a wire arranged in the casing, a connector terminal connected to the wire, a blocking member that blocks current by overcurrent flowing in the wire, stud bolts and nuts for connecting the blocking member and the wire, and heat conductive members. The casing includes casing concave parts, which are recessed toward a casing space part and have filling space parts to be filled with the heat conductive members. The stud bolts are fixed to the casing and include exposed surfaces that are partially exposed to the filling space parts. The heat conductive members are in direct contact with the exposed surfaces and a shell inner surface in a filled state.
    Type: Application
    Filed: April 14, 2023
    Publication date: November 23, 2023
    Inventors: Katsuya Nakano, Takashi Sone
  • Publication number: 20230257844
    Abstract: Provided is a steel sheet comprising a sheet thickness center part and a first surface layer softened part and a second surface layer softened part respectively arranged at two sides of the sheet thickness center part, wherein the first surface layer softened part and second surface layer softened part have 10 ?m or more average thicknesses and have average Vickers hardnesses of 0.90 time or less of the average Vickers hardness of a sheet thickness ½ position, and the first surface layer softened part has an average Vickers hardness of 1.05 times or more the average Vickers hardness of the second surface layer softened part.
    Type: Application
    Filed: August 6, 2021
    Publication date: August 17, 2023
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Katsuya NAKANO, Yuji SAKIYAMA, Takashi YASUTOMI, Yoshiaki HONDA, Masahiro NAKATA
  • Publication number: 20230250521
    Abstract: Provided is a steel sheet comprising a sheet thickness center part and a first surface layer part and a second surface layer part respectively arranged at two sides of the sheet thickness center part, wherein the first surface layer part and second surface layer part respectively independently have thicknesses of more than 10 ?m to 30% or less of the sheet thickness, the first surface layer part and second surface layer part have average Vickers hardnesses different from the average Vickers hardness of a sheet thickness ½ position, and a first hardness cumulative value at a region from a surface of the first surface layer part side to 30% of the sheet thickness is 1.05 times or more of a second hardness cumulative value at a region from a surface of the second surface layer part side to 30% of the sheet thickness.
    Type: Application
    Filed: August 6, 2021
    Publication date: August 10, 2023
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Yuji SAKIYAMA, Takashi YASUTOMI, Katsuya NAKANO, Yoshiaki HONDA, Masahiro NAKATA
  • Publication number: 20230183833
    Abstract: Provided is a steel sheet having a predetermined chemical composition, wherein precipitates having a diameter of less than 0.1 ?m are present in a number density of 10 to 200/?m2 in a depth region of 1 to 10 ?m from a surface, an amount of dissolved C in a depth region of 10 to 60 ?m from the surface is less than 0.20 mass %, and a tensile strength is 1200 MPa or more. Further, provided is a method for producing a steel sheet comprising a step of hot rolling a steel slab having a predetermined chemical composition, then coiling it at 580° C. or less, a step of pickling the hot rolled steel sheet to remove oxide scale and remove the surface layer of the hot rolled steel sheet down to at least 5 ?m, and a step of cold rolling the hot rolled steel sheet, then holding it in an atmosphere of a dew point of ?20 to 20° C. at a temperature region of 200 to 400° C. for 20 to 180 seconds and holding it at a temperature region of 740 to 900° C. for 40 to 300 seconds.
    Type: Application
    Filed: June 3, 2021
    Publication date: June 15, 2023
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Kengo TAKEDA, Katsuya NAKANO, Yuya SUZUKI, Eriko TSUKAMOTO
  • Publication number: 20230183834
    Abstract: Provided is a steel sheet having a predetermined chemical composition and microstructure, wherein a block size in a first depth region of 1 to 10 ?m from the surface is 5.0 ?m or less, a block size in a second depth region of 10 to 60 ?m from the surface is 6.0 to 20.0 ?m, and a block size in a third depth region of 60 ?m to 1/4 thickness from the surface is less than 6.0 ?m. Further, provided is a method for producing a steel sheet comprising a step of hot rolling a steel slab having a predetermined chemical composition, then coiling it at 500° C. or more, a step of pickling the hot rolled steel sheet to remove oxide scale, wherein an amount of removal of the surface layer of the hot rolled steel sheet is less than 5.00 ?m, a step of cold rolling by a rolling reduction of 30 to 90%, and an annealing step of holding in an atmosphere of a dew point of ?20 to 20° C. at a temperature region of 740 to 900° C. for 40 to 300 seconds.
    Type: Application
    Filed: June 3, 2021
    Publication date: June 15, 2023
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Kengo TAKEDA, Katsuya NAKANO, Yuya SUZUKI, Eriko TSUKAMOTO
  • Publication number: 20230119971
    Abstract: A connector includes a terminal fitting that is connected to a mating terminal fitting of a mating fitting space, a housing that includes a fitting wall fitted into the mating fitting space and a terminal accommodating section that accommodates the terminal fitting and is inserted into the mating fitting space together with the fitting wall, and an annular or tubular elastically deformable sealing member that fills an annular or tubular gap between an outer peripheral surface of the fitting wall and an inner peripheral surface of the mating fitting space in a circumferential direction at a fitting completion position of the fitting wall and the mating fitting space where positions of axial centers of the fitting wall and the mating fitting space are aligned with each other.
    Type: Application
    Filed: September 28, 2022
    Publication date: April 20, 2023
    Inventors: Katsuya Nakano, Takashi Sone
  • Publication number: 20230118800
    Abstract: A connector includes a retaining member that is held by the terminal housing portion at an assembly completed position to the terminal housing portion to lock movement of the terminal fitting with respect to the terminal housing portion in a terminal extraction direction opposite the terminal insertion direction at the assembly completed position are provided. The retaining member includes a terminal locking portion disposed facing a locked portion of the terminal fitting at the assembly completed position in the terminal extraction direction to lock movement of the locked portion in the terminal extraction direction. The terminal fitting includes a retainer housing portion that accommodates the terminal locking portion of the retaining member at the assembly completed position and allows relative movement of the terminal fitting in the alignment direction with respect to the terminal locking portion.
    Type: Application
    Filed: October 14, 2022
    Publication date: April 20, 2023
    Inventors: Katsuya Nakano, Takashi Sone
  • Publication number: 20230087014
    Abstract: The present invention provides steel sheet having both bendability and hydrogen embrittlement resistance. The steel sheet of the present invention includes a central part of sheet thickness and a surface sort part formed at one side or both sides of the central part of sheet thickness. The microstructure of the central part of sheet thickness comprises, by volume ratio, 60% or more of tempered martensite, respectively less than 30% of ferrite, bainite, pearlite, and retained austenite, and less than 5% of as-quenched martensite. A thickness of the surface soft part is more than 10 ?m per side and 15% or less of a thickness of the central part of sheet thickness, an average hardness of the surface soft part is 0.90 time or less of an average hardness of the central part of sheet thickness, the surface soft part includes carbides in a number density of 1×104/mm2 or more, an average particle size of the carbides is 0.250 ?m or less, and a standard deviation of a log of a particle size is 0.05 or less.
    Type: Application
    Filed: March 16, 2020
    Publication date: March 23, 2023
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Katsuya NAKANO, Kengo TAKEDA, Yuya SUZUKI
  • Patent number: 11600942
    Abstract: A connector according to the present invention includes a terminal fitting, a housing component which houses the terminal fitting, and an annular water cut-off member which is assembled to an outer peripheral surface of the fitting portion of the housing component and brings an outer peripheral side of the water cut-off member into close contact with an inner peripheral surface of a mating fitting portion at a fitting completion position.
    Type: Grant
    Filed: July 1, 2021
    Date of Patent: March 7, 2023
    Assignee: YAZAKI CORPORATION
    Inventors: Katsuya Nakano, Takashi Sone
  • Patent number: 11591675
    Abstract: Steel sheet low in cost and improved in fatigue characteristics without causing a drop in the cold formability, characterized in that it comprises an inner layer and a hard layer on one or both surfaces of the inner layer, a thickness of the hard layer is 20 ?m or more and 40% or less of the thickness of the steel sheet, an average micro-Vickers hardness of the hard layer is 240 HV or more and less than 400 HV, an amount of C of the hard layer is 0.4 mass % or less, an amount of N is 0.02 mass % or less, a variation of hardness measured by a nanoindenter at a depth of 10 from the surface of the hard layer is a standard deviation of 2.0 or less, an average micro-Vickers hardness of the inner layer is 80 HV or more and less than 400 HV, a volume rate of carbides contained in the inner layer is less than 2.00%, and the average micro-Vickers hardness of the hard layer is 1.05 times or more the average micro-Vickers hardness of the inner layer.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: February 28, 2023
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Kengo Takeda, Riki Okamoto, Kazuo Hikida, Katsuya Nakano, Yuya Suzuki, Genki Abukawa
  • Publication number: 20230041513
    Abstract: A steel sheet includes a predetermined composition, in which a microstructure at a ¼ thickness position from a surface in a sheet thickness direction includes, by vol %, ferrite: 80% or more, martensite: 2% or less, and residual austenite: 2% or less, a proportion of unrecrystallized ferrite in the ferrite of 5% or less, and in the microstructure of the steel sheet stretched by 10% at the ¼ thickness position from the surface in the sheet thickness direction, a number density of voids having a maximum diameter of 1.0 ?m or more is 1.0×109 pieces/m2 or less.
    Type: Application
    Filed: December 21, 2020
    Publication date: February 9, 2023
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Hiroyuki KAWATA, Kengo TAKEDA, Katsuya NAKANO
  • Patent number: 11572610
    Abstract: A steel sheet includes a predetermined chemical composition and a metal structure represented by, in area fraction, ferrite: 50% to 95%, granular bainite: 5% to 48%, martensite: 2% to 30%, and upper bainite, lower bainite, tempered martensite, retained austenite, and pearlite: 5% or less in total.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: February 7, 2023
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Katsuya Nakano, Kunio Hayashi, Yuri Toda, Eisaku Sakurada, Akihiro Uenishi