Patents by Inventor Hiroshi Hasegawa

Hiroshi Hasegawa 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: 11248275
    Abstract: A warm-workable high-strength steel sheet having superior warm workability and residual ductility after warm working, and a method for manufacturing such steel sheets. The warm-workable high-strength steel sheet has a chemical composition including, in mass %, C: 0.05 to 0.20%, Si: not more than 3.0%, Mn: 3.5 to 8.0%, P: not more than 0.100%, S: not more than 0.02%, Al: 0.01 to 3.0% and N: not more than 0.010%, the balance being Fe and inevitable impurities. The steel sheet has a microstructure that includes, in area fractions, 10 to 60% retained austenite, 10 to 80% ferrite, 5 to 50% martensite and 0 to 5% bainite, the C content in the retained austenite being less than 0.40 mass %.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: February 15, 2022
    Assignee: JFE STEEL CORPORATION
    Inventors: Hiroshi Hasegawa, Yoshimasa Funakawa
  • Patent number: 11248277
    Abstract: A method for manufacturing a high-strength galvanized steel sheet having excellent strength-elongation balance, coating adhesiveness, and surface appearance. The method includes: (i) a first heating process of heating a steel sheet having a predetermined chemical composition, (ii) a first pickling process of pickling the steel sheet which was subjected to the first heating process in an oxidizing acidic aqueous solution, (iii) a second pickling process of pickling the steel sheet which was subjected to the first pickling process in a non-oxidizing acidic aqueous solution, (iv) a second heating process of holding the steel sheet, which was subjected to the second pickling process, at a temperature range of 700° C. or higher and 900° C. or lower in a hydrogen-containing atmosphere for 20 seconds or more and 300 seconds or less, and (v) performing a galvanizing treatment on the steel sheet which was subjected to the second heating process.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: February 15, 2022
    Assignee: JFE STEEL CORPORATION
    Inventors: Shotaro Terashima, Yusuke Fushiwaki, Yoichi Makimizu, Hiroyuki Masuoka, Hiroshi Hasegawa
  • Publication number: 20220023970
    Abstract: This laser welding device includes a tubular portion. The tubular portion includes a first tubular portion and a second tubular portion. The second tubular portion has a constant cross-sectional shape orthogonal to an irradiation direction along the irradiation direction E. The tubular portion has a predetermined length that is longer than a length of a chamber in the irradiation direction.
    Type: Application
    Filed: December 4, 2019
    Publication date: January 27, 2022
    Applicant: AISIN AW INDUSTRIES CO., LTD.
    Inventors: Kouji TAKEMOTO, Kazuyoshi MIYAMOTO, Tomoaki YOSHIDA, Daichi SUMIMORI, Hiroshi HASEGAWA
  • Patent number: 11230744
    Abstract: A steel sheet having excellent fatigue resistance as a material for automobile parts and a TS of 590 MPa or more, and a method for producing the same. The steel sheet has a composition comprising, by mass %, C: 0.04% or more and 0.15% or less, Si: 0.3% or less, Mn: 1.0% or more and 2.6% or less, P: 0.1% or less, S: 0.01% or less, Al: 0.01% or more and 0.1% or less, N: 0.015% or less, one or two of Ti and Nb: 0.01% or more and 0.2% or less in a total, and the balance being Fe and unavoidable impurities. The steel sheet has 50% or more of ferrite and 10% or more and 50% or less of martensite in terms of an area ratio, and a microstructure in which a standard deviation of nano-hardness is 1.50 GPa or less and tensile strength of 590 MPa or more.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: January 25, 2022
    Assignee: JFE STEEL CORPORATION
    Inventors: Tatsuya Nakagaito, Yoshimasa Funakawa, Yoshihiko Ono, Hiroshi Hasegawa
  • Patent number: 11136642
    Abstract: A steel sheet, a plated steel sheet, and methods for producing a hot-rolled steel sheet, a cold-rolled full hard steel sheet, and a steel sheet. The steel sheet has a specified composition and a microstructure including 0 to 80% of polygonal ferrite and 20 to 100% of a total of martensite, bainite, and residual austenite in terms of an area ratio within 20 ?m of the steel sheet surface. The content of Mn in martensite present within 20 ?m of the steel sheet surface ([Mn]SM) and the content of Mn in a bulk ([Mn]B) satisfy [Mn]SM/[Mn]B?1.5. At a location 300 ?m from the steel sheet surface, an area ratio of the martensite is in a range of 20 to 50%.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: October 5, 2021
    Assignee: JFE STEEL CORPORATION
    Inventors: Hiroshi Hasegawa, Yoshimasa Funakawa
  • Patent number: 11136636
    Abstract: A steel sheet, a plated steel sheet, and methods for producing a hot-rolled steel sheet, a cold-rolled full hard steel sheet, and a steel sheet. The steel sheet has a specified composition and a microstructure including 0 to 60% of polygonal ferrite and 40 to 100% of a total of martensite, bainite, and residual austenite in terms of an area ratio within 20 ?m from the steel sheet surface. The content of Mn in martensite present within 20 ?m of the steel sheet surface ([Mn]SM) and the content of Mn in a bulk ([Mn]B) satisfy [Mn]SM/[Mn]B?1.5. At a location 300 ?m from the steel sheet surface, an area ratio of the martensite is in a range of 40 to 80%, and the polygonal ferrite and the bainite have an average crystal grain size of less than 15 ?m.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: October 5, 2021
    Assignee: JFE STEEL CORPORATION
    Inventors: Hiroshi Hasegawa, Yoshimasa Funakawa
  • Publication number: 20210154630
    Abstract: An ultrasonic homogenizer includes an ultrasonic transducer; an ultrasonic horn that irradiates an ultrasonic wave generated by the ultrasonic transducer; a holder that receives an irradiating surface of the ultrasonic horn; an intake port that is provided on a bottom face of the holder and intakes a mixture liquid into the holder; and an ejection port that is provided on the holder above the intake port and discharges the mixture liquid supplied inside the holder; an opening area of the intake port being smaller than an irradiating area of the ultrasonic horn and the irradiating surface of the ultrasonic horn being disposed above the intake port whereby facing the intake port.
    Type: Application
    Filed: November 20, 2020
    Publication date: May 27, 2021
    Applicant: Kaijo Corporation
    Inventors: Mineyuki SEKIMOTO, Hitoshi YAMAMOTO, Hiroshi HASEGAWA, Takashi KAWAMURA
  • Patent number: 11016326
    Abstract: A curved display panel including a display surface curved around one curving axis includes a first substrate, a second substrate disposed opposite the first substrate while having a space therebetween, first pixel sections included in the first substrate and arranged within a surface area of the display surface, and second pixel sections included in the second substrate and arranged within the surface area of the display surface and overlapping the first pixel sections, respectively, in a curved state of the display surface. For at least some of the second pixel sections that are to be displaced by curving, position relation with respect to the first pixel sections in the flat state of the display surface is changed from that in the curved state of the display surface by a correction displacement amount based on an assumed displacement amount corresponding to a position within the surface area of the display surface.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: May 25, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Hiroshi Hasegawa
  • Patent number: 10988836
    Abstract: A method for producing a high-strength galvanized steel sheet having excellent fatigue resistance properties. The method includes an oxidation processing in which a steel sheet is heated at a temperature of 400 to 750° C. in an atmosphere having an O2 concentration of 1000 ppm by volume or more and a H2O concentration of 1000 ppm by volume or more, and the steel sheet is heated at a temperature of 600 to 850° C. in an atmosphere having an O2 concentration of less than 1000 ppm by volume and a H2O concentration of 1000 ppm by volume or more. The method also includes reduction-annealing in which the steel sheet is heated at a heating rate of 0.1° C./sec or more to a temperature of 650 to 900° C. in an atmosphere having a H2 concentration of 5 to 30 vol % and a H2O concentration of 10 to 1000 ppm by volume.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: April 27, 2021
    Assignee: JFE STEEL CORPORATION
    Inventors: Yoichi Makimizu, Yoshitsugu Suzuki, Gentaro Takeda, Hiroshi Hasegawa
  • Patent number: 10982297
    Abstract: A steel sheet having a specified chemical composition and a method for producing the steel sheet. The steel sheet has a microstructure including martensite and bainite. The total area fraction of the martensite and the bainite to the entirety of the microstructure is more than 90% and 100% or less. The microstructure includes inclusion clusters A and B, the content of the clusters A in the microstructure being 2 clusters/mm2 or less, and the content of the clusters B in the microstructure being 5 clusters/mm2 or less. The microstructure includes carbide particles including Fe as a main constituent which have an aspect ratio of 2.0 or less and a major axis of 0.30 ?m or more and 2 ?m or less. The content of the carbide particles in the microstructure is 4000 particles/mm2 or less. The microstructure includes prior ? grains having an average size of 6 to 15 ?m.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: April 20, 2021
    Assignee: JFE STEEL CORPORATION
    Inventors: Yoshihiko Ono, Shimpei Yoshioka, Nobuyuki Nakamura, Hiroshi Hasegawa
  • Patent number: 10979686
    Abstract: A liquid crystal display device which is an image display device for displaying a stereoscopic image includes two correction tables (a nighttime correction table and a daytime correction table) storing correction values corresponding to combinations of a gradation value of a processing target pixel and a gradation value of an adjacent pixel, a correction table selection unit configured to select one of the two correction tables depending on conditions, and gradation value correction units (a right-image gradation value correction unit and a left-image gradation value correction unit) configured to correct the gradation value of the processing target pixel based on the correction table selected by the correction table selection unit.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: April 13, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Hiroshi Hasegawa
  • Publication number: 20210104424
    Abstract: A load port apparatus connects a main opening of a wafer transportation container to a frame opening. The apparatus includes an installation unit, a frame unit, a flange clamp unit, and a detection unit. The installation unit includes an installation table configured to install the container and relatively move to the frame opening. The frame unit is upright upward from the installation unit and includes the frame opening. The flange clamp unit includes an engagement section and a drive section. The engagement section is engageable with a flange surrounding an outer circumference of the main opening. The drive section drives the engagement section to carry out an engagement operation and a separation operation. The detection unit detects the engagement operation by the flange clamp unit with classification into a normal engagement operation and an abnormal engagement operation.
    Type: Application
    Filed: October 7, 2020
    Publication date: April 8, 2021
    Applicant: TDK CORPORATION
    Inventors: Tomoshi ABE, Hiroshi HASEGAWA, Nozomu KATO, Hiroshi IGARASHI, Tadamasa IWAMOTO
  • Publication number: 20210102278
    Abstract: There are provided a high-strength steel sheet excellent in strength, workability in terms of, for example, ?, and energy absorption characteristics, and a production method therefor. The high-strength steel sheet has a specific component composition and a steel microstructure containing, on an area percent basis, 1% to 35% ferrite having an aspect ratio of 2.0 or more, 10% or less ferrite having an aspect ratio of less than 2.0, less than 5% non-recrystallized ferrite, 40% to 80% in total of bainite and martensite containing carbide, 5% to 35% in total of fresh martensite and retained austenite, and 3% to 35% retained austenite, the retained austenite having a C content of 0.40% to 0.70% by mass.
    Type: Application
    Filed: February 6, 2019
    Publication date: April 8, 2021
    Applicant: JFE Steel Corporation
    Inventors: Hiroshi Hasegawa, Tatsuya Nakagaito
  • Patent number: 10941475
    Abstract: A method for producing a high-strength galvanized steel sheet having excellent fatigue resistance properties. The method includes an oxidation processing in which a steel sheet is heated at a temperature of 400 to 750° C. in an atmosphere having an O2 concentration of 1000 ppm by volume or more and a H2O concentration of 1000 ppm by volume or more, and the steel sheet is heated at a temperature of 600 to 850° C. in an atmosphere having an O2 concentration of less than 1000 ppm by volume and a H2O concentration of 1000 ppm by volume or more. The method also includes reduction-annealing in which the steel sheet is heated at a heating rate of 0.1° C./sec or more to a temperature of 650 to 900° C. in an atmosphere having a H2 concentration of 5 to 30 vol % and a H2O concentration of 10 to 1000 ppm by volume.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: March 9, 2021
    Assignee: JFE STEEL CORPORATION
    Inventors: Yoichi Makimizu, Yoshitsugu Suzuki, Gentaro Takeda, Hiroshi Hasegawa
  • Patent number: 10941476
    Abstract: High strength steel sheets that have excellent ductility and low-temperature toughness and methods for producing such high strength steel sheets. A high strength steel sheet includes a composition containing, on a mass % basis, C: 0.05% to 0.30%, Si: 0.5% to 2.5%, Mn: 0.5% to 3.5%, P: 0.003% to 0.100%, S: 0.02% or less, Al: 0.010% to 1.5%, and N: 0.01% or less, the balance being Fe and unavoidable impurities, and a steel microstructure including a ferrite phase with an area fraction of 10% to 70%, a hard second phase with an area fraction of 30% to 90%, and a carbide that is at an interface between a ferrite phase and a hard second phase and that has an average equivalent-circle diameter of 200 nm or less.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: March 9, 2021
    Assignee: JFE STEEL CORPORATION
    Inventors: Takashi Ueno, Hiroshi Hasegawa, Yoshimasa Funakawa, Yoshimasa Himei, Yoshikazu Suzuki
  • Publication number: 20210062282
    Abstract: A high-strength steel sheet has a specific composition and a microstructure. In the microstructure, the area fraction of elongated ferrite phase grains having an aspect ratio of 3 or more is 1% or less, the average crystal grain size of martensite included in a region extending 50 ?m from a surface of the steel sheet is 20 ?m or less, the content of oxide particles having a minor axis length of 0.8 ?m or less in the region extending 50 ?m from the surface of the steel sheet is 1.0×1010 particles/m2 or more, and the content of coarse oxide particles having a minor axis length of more than 1 ?m in the region extending 50 ?m from the surface of the steel sheet is 1.0×108 particles/m2 or less. The content of hydrogen trapped in the steel sheet is 0.05 ppm by mass or more.
    Type: Application
    Filed: October 9, 2018
    Publication date: March 4, 2021
    Applicant: JFE Steel Corporation
    Inventors: Hiroshi Hasegawa, Hidekazu Minami, Tatsuya Nakagaito, Kana Sasaki, Shoji Tanaka
  • Patent number: 10881238
    Abstract: A safety cap assembly to be installed in the lid of a cooking appliance such as a pressure cooker and comprising a pressure release tube having a flange portion at its lower end, a cap securing nut with its outer diameter gradually increasing from the top end to the lower end and provided on the flange portion of the cap securing nut, and a safety cap unit which includes a mesh casing and a supporting bridge in a shallow reversed V-shape and is mounted to the lower portion of the pressure release tube. The safety cap assembly can be installed along with a vacuum adapter including a clogging ball inside to create a vacuum environment inside the pressure cooker.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: January 5, 2021
    Inventor: Tom Hiroshi Hasegawa
  • Publication number: 20200404944
    Abstract: The disclosure provides a frozen dessert composition comprising (A) about 6 to 15% by weight of palatinose based on the total weight of the composition, and (B) about 10 to 30% by weight of a dextrin or a combination of a dextrin and a soluble dietary fiber based on the total weight of the composition. The disclosure also provides a method of manufacturing a frozen dessert composition comprising mixing the following components with water; (A) about 6 to 15% by weight of palatinose based on the total weight of the composition, and (B) about 10 to 30% by weight of a dextrin or a combination of a dextrin and a soluble dietary fiber based on the total weight of the composition.
    Type: Application
    Filed: February 27, 2019
    Publication date: December 31, 2020
    Applicant: OTSUKA PHARMACEUTICAL CO., LTD.
    Inventors: Shogo MOCHIZUKI, Takashi SATO, Hiroshi HASEGAWA
  • Publication number: 20200369137
    Abstract: A coupling part of a weather strip is fixed between a first anchoring part and a second anchoring part on an outer peripheral part of a sash of a door. A hollow seal member and an outer lip are integrally formed with the coupling part and make elastic contact with a second surface and a first surface of a door opening edge of a body panel, respectively, when the door is in the closed position. The weather strip is fixed to the sash only by fixing the coupling part. A pillar part couples the coupling part with the hollow seal member. A body seal lip is provided on the hollow seal member and makes elastic contact with the door opening edge when the door is in the closed position.
    Type: Application
    Filed: October 25, 2018
    Publication date: November 26, 2020
    Applicant: NISHIKAWA RUBBER CO., LTD.
    Inventors: Shingo TAWADA, Hiroshi HASEGAWA
  • Patent number: 10830300
    Abstract: A vehicle drum brake including: a pair of brake shoes arranged to be expanded on a backing plate; a first parking lever disposed to rotate around a predetermined mounting shaft positioned at one end portion of one of the brake shoes; a second parking lever made up of a member different from the first parking lever, disposed to rotate around the mounting shaft, and coupled to and rotated together with the first parking lever; and a strut including a first strut member engaged with the first and second parking levers, the first and second parking levers are coupled to each other by a coupling pin so as to be engaged with the first strut member at the same time.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: November 10, 2020
    Assignees: HOSEI BRAKE INDUSTRY CO., LTD., ADVICS CO., LTD.
    Inventors: Satoru Shintani, Koji Mori, Kenichi Myojo, Hiroshi Hasegawa, Yoshitaka Ishimaru, Keiichi Tsurumi