Patents by Inventor Masahiro Nakata

Masahiro Nakata 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: 11926319
    Abstract: A driving monitoring device (100) decides an applicable collision pattern that applies to a collision pattern of a case where a vehicle (200) collides with a mobile object, based on a velocity vector of the vehicle, a velocity vector of the mobile object, and so on. Subsequently, the driving monitoring device calculates a time until collision, which is a time taken until the vehicle collides with the mobile object, in the applicable collision pattern. Then, the driving monitoring device calculates a danger level of an accident in which the vehicle collides with the mobile object, based on the applicable collision pattern and the time until collision.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: March 12, 2024
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Haruo Nakata, Masahiko Tanimoto, Yosuke Ishiwatari, Masahiro Abukawa
  • Patent number: 11926730
    Abstract: A polypropylene film which is capable of suppressing blocking in a rolled polypropylene film. The polypropylene film has a first surface and a second surface, contains a polypropylene resin as a main component, and is configured such that: the Svk value (SvkA) of the first surface is 0.005 ?m or more and 0.030 ?m or less; the Spk value (SpkA) of the first surface is more than 0.035 ?m and 0.080 ?m or less; the Svk value (SvkB) of the second surface is 0.005 ?m or more and 0.030 ?m or less; and the Spk value (SpkB) of the second surface is 0.015 ?m or more and 0.035 ?m or less.
    Type: Grant
    Filed: April 17, 2023
    Date of Patent: March 12, 2024
    Assignee: Oji Holdings Corporation
    Inventors: Tatsuji Ishida, Yoshimune Okuyama, Masahiro Nakata, Tadakazu Ishiwata
  • Patent number: 11859259
    Abstract: A zinc-plated steel sheet includes a steel sheet having a predetermined chemical composition and a zinc-plated layer. In the steel sheet, steel microstructures in a range of ? thickness to ? thickness, having the center at ¼ thickness from a steel sheet surface, include, by vol %, ferrite: 0% to 10%, bainite: 0% to 30%, tempered martensite: 50% or more, fresh martensite: 0% to 10%, retained austenite: more than 10% and 30% or less, and pearlite: 0% to 5%. In the zinc-plated steel sheet, the amount of hydrogen emitted when the steel sheet is heated to 200° C. from room temperature after removal of the zinc-plated layer is 0.40 ppm or less per mass of the steel sheet, the tensile strength is 1470 MPa or more, and no cracking occurs in a U-shape bending test where a stress equivalent to 1000 MPa is applied for 24 hours.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: January 2, 2024
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Takafumi Yokoyama, Kunio Hayashi, Masahiro Nakata, Yuji Yamaguchi, Satoshi Uchida
  • Patent number: 11817272
    Abstract: In a metallized film 1, n electrode portions 20, which are metal deposition portions, are formed in parallel on one surface of a dielectric film 2 having a film width corresponding to n capacitor elements, n being an even number of 2 or more. Each electrode portion 20 is provided with a plurality of inclined margins 31 and 32, which are metal non-deposition portions extending at an angle with respect to a film width direction, at a regular interval in a film length direction. Across a center line Lc virtually extending in the film length direction at the center in the film width direction, the inclined margins 31 of the electrode portion 20 located on one side in the film width direction, and the inclined margins 32 of the electrode portion 20 located on the other side in the film width direction are inclined in opposite directions so as to be line-symmetric with respect to the center line Lc.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: November 14, 2023
    Assignee: OJI HOLDINGS CORPORATION
    Inventors: Kazuyuki Hiate, Akihiro Kakehi, Katsuyuki Moritaka, Yoshikazu Fujishiro, Masahiro Nakata
  • Publication number: 20230340245
    Abstract: A polypropylene film which is capable of suppressing blocking in a rolled polypropylene film. The polypropylene film has a first surface and a second surface, contains a polypropylene resin as a main component, and is configured such that: the Svk value (SvkA) of the first surface is 0.005 ?m or more and 0.030 ?m or less; the Spk value (SpkA) of the first surface is more than 0.035 ?m and 0.080 ?m or less; the Svk value (SvkB) of the second surface is 0.005 ?m or more and 0.030 ?m or less; and the Spk value (SpkB) of the second surface is 0.015 ?m or more and 0.035 ?m or less.
    Type: Application
    Filed: April 17, 2023
    Publication date: October 26, 2023
    Inventors: Tatsuji ISHIDA, Yoshimune OKUYAMA, Masahiro NAKATA, Tadakazu ISHIWATA
  • Publication number: 20230330733
    Abstract: A die includes a first die and a second die, and at least one of the first die or the second die includes: a bottom portion having a plate shape; a top portion having a plate shape and is provided apart from the bottom portion; and a stiffening member having one end directly connected to the bottom portion and another end connected to the top portion, the stiffening member extending in an inclined manner from a connection portion with the bottom portion toward a side at which a center of the top portion is located as the stiffening member extends from the bottom portion side toward the top portion side.
    Type: Application
    Filed: October 6, 2021
    Publication date: October 19, 2023
    Inventors: Ryo URUSHIBATA, Yasuhiro ITO, Masahiro NAKATA
  • 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
  • Patent number: 11685963
    Abstract: A zinc-plated steel sheet of an aspect of the present invention includes a steel sheet having a predetermined chemical composition and a zinc-plated layer. In the steel sheet, steel microstructures in a range of ? thickness to ? thickness, having the center at ¼ thickness from a steel sheet surface, include, by vol %, ferrite: 0% to 10%, bainite: 0% to 20%, tempered martensite: 70% or more, fresh martensite: 0% to 10%, retained austenite: 0% to 10%, and pearlite: 0% to 5%. In the zinc-plated steel sheet, the amount of hydrogen emitted when the steel sheet is heated to 200° C. from a room temperature after removal of the zinc-plated layer is 0.40 ppm or less per mass of the steel sheet, the tensile strength is 1470 MPa or more, and no cracking occurs in a U-shape bending test where a stress equivalent to 1000 MPa is applied for 24 hours.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: June 27, 2023
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Takafumi Yokoyama, Kunio Hayashi, Masahiro Nakata, Yuji Yamaguchi, Satoshi Uchida
  • Patent number: 11661507
    Abstract: A polypropylene film which is capable of suppressing blocking in a rolled polypropylene film. The polypropylene film has a first surface and a second surface, contains a polypropylene resin as a main component, and is configured such that: the Svk value (SvkA) of the first surface is 0.005 ?m or more and 0.030 ?m or less; the Spk value (SpkA) of the first surface is more than 0.035 ?m and 0.080 ?m or less; the Svk value (SvkB) of the second surface is 0.005 ?m or more and 0.030 ?m or less; and the Spk value (SpkB) of the second surface is 0.015 ?m or more and 0.035 ?m or less.
    Type: Grant
    Filed: September 9, 2022
    Date of Patent: May 30, 2023
    Assignee: Oji Holdings Corporation
    Inventors: Tatsuji Ishida, Yoshimune Okuyama, Masahiro Nakata, Tadakazu Ishiwata
  • Patent number: 11649531
    Abstract: A steel sheet has a specific chemical composition and has a structure represented by, by area ratio, ferrite: 5 to 60%, and bainite: 40 to 95%. When a region that is surrounded by a grain boundary having a misorientation of 15° or more and has a circle-equivalent diameter of 0.3 ?m or more is defined as a crystal grain, the proportion of crystal grains each having an intragranular misorientation of 5 to 14° to all crystal grains is 20 to 100% by area ratio. A precipitate density of Ti(C,N) and Nb(C,N) each having a circle-equivalent diameter of 10 nm or less is 1010 precipitates/mm3 or more. A ratio (Hvs/Hvc) of a hardness at 20 ?m in depth from a surface (Hvs) to a hardness of the center of a sheet thickness (Hvc) is 0.85 or more.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: May 16, 2023
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Kohichi Sano, Makoto Uno, Ryoichi Nishiyama, Yuji Yamaguchi, Natsuko Sugiura, Masahiro Nakata
  • Publication number: 20230044276
    Abstract: A polypropylene film which is capable of suppressing blocking in a rolled polypropylene film. The polypropylene film has a first surface and a second surface, contains a polypropylene resin as a main component, and is configured such that: the Svk value (SvkA) of the first surface is 0.005 ?m or more and 0.030 ?m or less; the Spk value (SpkA) of the first surface is more than 0.035 ?m and 0.080 ?m or less; the Svk value (SvkB) of the second surface is 0.005 ?m or more and 0.030 ?m or less; and the Spk value (SpkB) of the second surface is 0.015 ?m or more and 0.035 ?m or less.
    Type: Application
    Filed: September 9, 2022
    Publication date: February 9, 2023
    Inventors: Tatsuji ISHIDA, Yoshimune OKUYAMA, Masahiro NAKATA, Tadakazu ISHIWATA
  • Patent number: 11492475
    Abstract: A polypropylene film which is capable of suppressing blocking in a rolled polypropylene film. The polypropylene film has a first surface and a second surface, contains a polypropylene resin as a main component, and is configured such that: the Svk value (SvkA) of the first surface is 0.005 ?m or more and 0.030 ?m or less; the Spk value (SpkA) of the first surface is more than 0.035 ?m and 0.080 ?m or less; the Svk value (SvkB) of the second surface is 0.005 ?m or more and 0.030 ?m or less; and the Spk value (SpkB) of the second surface is 0.015 ?m or more and 0.035 ?m or less.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: November 8, 2022
    Assignee: OJI HOLDINGS CORPORATION
    Inventors: Tatsuji Ishida, Yoshimune Okuyama, Masahiro Nakata, Tadakazu Ishiwata
  • Publication number: 20220300809
    Abstract: A data generation system according to one or more embodiments generates a first pseudo sample including a first feature of a type corresponding to an input value using a trained first generator, a second pseudo sample including a second feature of a type corresponding to an input value using a trained second generator, and a new sample including the first feature and the second feature by synthesizing the generated first pseudo sample and the generated second pseudo sample.
    Type: Application
    Filed: September 2, 2020
    Publication date: September 22, 2022
    Applicant: OMRON Corporation
    Inventors: Yamato OKAMOTO, Ryo YONETANI, Masahiro NAKATA, Yoshiaki MIYATA
  • Patent number: 11447848
    Abstract: A steel sheet wherein a steel structure of an inside of the steel sheet contains, by volume fraction, soft ferrite: 0% to 30%, retained austenite: 3% to 40%, fresh martensite: 0% to 30%, a sum of pearlite and cementite: 0% to 10%, and a remainder including hard ferrite. In the steel sheet, in a ? to ? thickness range, a proportion of retained austenite having an aspect ratio of 2.0 or more is 50% or more, and a soft layer having a thickness of 1 to 100 ?m from a surface in a sheet thickness direction is present. When an emission intensity at a wavelength indicating Si is analyzed in the sheet thickness direction from the surface by a radio-frequency glow discharge analysis method, a peak of the emission intensity appears in a range of more than 0.2 ?m and 5.0 ?m or less from the surface.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: September 20, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Takafumi Yokoyama, Kohichi Sano, Riki Okamoto, Hiroyuki Kawata, Eisaku Sakurada, Yuji Yamaguchi, Kazuki Shiokawa, Yuichi Nakahira, Kohei Ueda, Masahiro Nakata, Satoshi Uchida
  • Patent number: 11377710
    Abstract: A steel sheet has a chemical composition with a steel structure containing, by volume fraction, soft ferrite: 0-30%, retained austenite: 3-40%, fresh martensite: 0-30%, pearlite and cementite: 0-10%, and a remainder including hard ferrite. In the steel sheet, a number proportion of retained austenite having an aspect ratio of 2.0 or more in the total retained austenite is 50% or more, and a soft layer having a thickness of 1-100 ?m is present. In the soft layer, a volume fraction of ferrite grains having an aspect ratio of less than 3.0 is 50% or more, and a volume fraction of retained austenite is 50% or more of the volume fraction of the retained austenite of the inside of the steel sheet. A peak of an emission intensity at a wavelength indicating Si appears in a range of more than 0.2 ?m to 5 ?m or less from the surface.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: July 5, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Takafumi Yokoyama, Kohichi Sano, Riki Okamoto, Hiroyuki Kawata, Eisaku Sakurada, Yuji Yamaguchi, Kazuki Shiokawa, Yuichi Nakahira, Kohei Ueda, Masahiro Nakata, Satoshi Uchida
  • Patent number: 11364707
    Abstract: To solve the problem about the difference in temperature increasing rate between an overlapped part and a one-sheet part so as to further improve the corrosion resistance of plating after hot stamping.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: June 21, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Soshi Fujita, Yuki Suzuki, Masahiro Fuda, Jun Maki, Hideaki Irikawa, Masahiro Nakata
  • Patent number: 11332803
    Abstract: A high-strength hot-dip galvanized steel sheet contains predetermined amounts of C, Si, Mn, P, S, N, O, sol. Al, Ti, and B, 0.1 to 1.5 mass % of Cr+2×Mo, and a balance in a form of Fe and inevitable impurities. A steel structure includes, in area %, ferrite: 1 to 50%, martensite: 20 to 70%, residual austenite: 0 to 5%, pearlite: 0 to 5%, MA and cementite having 0.2 ?m or more grain size: 0 to 5% in total, and a balance in a form of bainite. A number density of MA or cementite having 0.2 ?m or more grain size and isolated in ferrite or bainite grains is 100 pcs/1000 ?m2 or less, and an average hardness of martensite is in a range from 330 to 500 Hv.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: May 17, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Takafumi Yokoyama, Yuji Yamaguchi, Masahiro Nakata, Kunio Hayashi, Satoshi Uchida, Takuma Kawanaka
  • Patent number: 11236412
    Abstract: A steel sheet has a specific chemical composition and has a structure represented by, by area ratio, ferrite: 30 to 95%, and bainite: 5 to 70%. When a region that is surrounded by a grain boundary having a misorientation of 15° or more and has a circle-equivalent diameter of 0.3 ?m or more is defined as a crystal grain, the proportion of crystal grains each having an intragranular misorientation of 5 to 14° to all crystal grains is 20 to 100% by area ratio. An average aspect ratio of ellipses equivalent to the crystal grains is 5 or less. An average distribution density of the total of Ti-based carbides and Nb-based carbides each having a grain size of 20 nm or more on ferrite grain boundaries is 10 carbides/?m or less.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: February 1, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Kohichi Sano, Makoto Uno, Ryoichi Nishiyama, Yuji Yamaguchi, Natsuko Sugiura, Masahiro Nakata
  • Patent number: 11230755
    Abstract: A steel sheet has a specific chemical composition and has a structure represented by, by area ratio, ferrite: 0 to 30%, and bainite: 70 to 100%. When a region that is surrounded by a grain boundary having a misorientation of 15° or more and has a circle-equivalent diameter of 0.3 ?m or more is defined as a crystal grain, the proportion of crystal grains each having an intragranular misorientation of 5 to 14° to all crystal grains is 20 to 100% by area ratio. A grain boundary number density of solid-solution C or a grain boundary number density of the total of solid-solution C and solid-solution B is 1 piece/nm2 or more and 4.5 pieces/nm2 or less. An average grain size of cementite precipitated at grain boundaries is 2 ?m or less.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: January 25, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Kohichi Sano, Makoto Uno, Ryoichi Nishiyama, Yuji Yamaguchi, Natsuko Sugiura, Masahiro Nakata