Patents by Inventor Kengo Takeda

Kengo Takeda 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: 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: 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
  • 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
  • Patent number: 11941944
    Abstract: Provided is an information processing apparatus including an interface capable of receiving identification information on a user retrieved by an information reading apparatus installed in a gaming hall, and a controller capable of retrieving locational information on an object related to the user in the gaming hall from a storage device based on the identification information on the user and performing image processing to create a floor map of the gaming hall in which an image associated with the object is mapped to a corresponding position of the object in the gaming hall. The storage device stores identification information for identifying the object together with the identification information on the user and further stores the locational information for locating the object together with the identification information on the object. The information processing apparatus enables grasp of objects related to the user in the gaming hall.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: March 26, 2024
    Assignee: Universal Entertainment Corporation
    Inventor: Kengo Takeda
  • 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
  • Patent number: 11890865
    Abstract: A movable assembly configured to move a table in a first direction is provided. The movable assembly includes a first link member including a first elongated member and a second elongated member coupled in an X formation, a second link member including a third elongated member and a fourth elongated member coupled in the X formation, a first frame member, a second frame member, and a rotatable member being a threaded rod. The first frame member includes a first supporting portion and a first guiding portion, which support ends of the first, second, third, and fourth elongated members on one side rotatably. The second frame member includes a second supporting portion and a second guiding portion, which support other ends of the first, second, third, and fourth elongated members located on the other side movably in the third direction.
    Type: Grant
    Filed: March 31, 2022
    Date of Patent: February 6, 2024
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Akihiro Kobayashi, Kengo Takeda, Takayuki Akimatsu, Takahiro Nishimoto
  • Publication number: 20240011114
    Abstract: This steel sheet has a predetermined chemical composition, and includes, as a metallographic structure, ferrite, bainite, and pearlite in a total volume percentage of 0% or more and 50% or less, residual austenite in a volume percentage of 3% or more and 20% or less, and a remainder of fresh martensite and tempered martensite, in which residual austenite having an aspect ratio of 3.0 or more occupies 80% or more of a total residual austenite by area ratio, the steel sheet includes an internal oxide layer having a thickness of 4.0 ?m or more from a surface of the steel sheet and a decarburized layer having a thickness of 10 ?m or more and 100 ?m or less from the surface of the steel sheet, and an amount of diffusible hydrogen included in the steel sheet is 1.00 ppm or less on a mass basis.
    Type: Application
    Filed: December 24, 2021
    Publication date: January 11, 2024
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Eriko TSUKAMOTO, Kengo TAKEDA
  • Patent number: 11866800
    Abstract: A steel sheet includes a predetermined composition satisfying Expression (1), in which the microstructure at the ¼ thickness position from the surface in the sheet thickness direction includes, by vol %, ferrite: 95% or more and a remainder of the microstructure: 5% or less, has a proportion of unrecrystallized ferrite in the ferrite of 5% or less, and a half width w and an X-ray wavelength ? at a peak of (200) plane of the ferrite satisfy Expression (2). 0.80?{(Ti/48?N/14)+Nb/93}/(C/12)?5.00??(1) w×??0.
    Type: Grant
    Filed: December 21, 2020
    Date of Patent: January 9, 2024
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Hiroyuki Kawata, Kengo Takeda, Mai Nagano
  • Patent number: 11850863
    Abstract: An image recording apparatus, having a discharging head, a fan, and a controller, is provided. The discharging head includes a discharging surface and a plurality of nozzles arranged along a sub-scanning direction, which intersects orthogonally with a main scanning direction. The discharging head is configured to move in the main scanning direction. The fan is configured to generate an airflow for collecting mist of ink discharged through the nozzles. The controller is configured to obtain a droplet size of the ink to be discharged through the nozzles from one of a print job and a printing mode set in advance, obtain a distance between the discharging surface and a printable medium, and control a rotation speed of the fan based on the droplet size and the distance.
    Type: Grant
    Filed: February 1, 2022
    Date of Patent: December 26, 2023
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Takahiro Nishimoto, Akihiro Kobayashi, Kenta Hasebe, Kengo Takeda, Yumiko Oshika
  • Patent number: 11816955
    Abstract: Provided is an information processing apparatus that enables adequately grasping the gaming environment. The information processing apparatus receives environmental information representing a gaming environment at a place where a gaming machine is installed in a gaming hall and performs image processing to create a floor map of the gaming hall in which gaming machines installed in the gaming hall are mapped to corresponding positions by associating the environmental information with the position of the gaming machine.
    Type: Grant
    Filed: April 1, 2020
    Date of Patent: November 14, 2023
    Assignee: Universal Entertainment Corporation
    Inventor: Kengo Takeda
  • Publication number: 20230349022
    Abstract: A steel sheet according to an aspect of the present invention has a predetermined chemical composition, in which a metallographic structure at a ¼ thickness portion includes, by volume percentage, a total of 50% or more of one or both of martensite and bainite and 8% or more of residual austenite, an average value of aspect ratios of prior austenite grains is 5.0 or more, number density of AlN is 3000 pieces/mm2 or more and less than 6000 pieces/mm2 at a depth position of 30 ?m from a sheet surface, an internal oxidation layer in which at least a part of a crystal grain boundary is coated with an oxide is provided from the sheet surface to a depth of 5.0 ?m or more, grain boundary coverage of the oxide is 60% or more in a region from the sheet surface to a depth of 5.0 ?m, and a tensile strength is 980 MPa or more.
    Type: Application
    Filed: September 28, 2021
    Publication date: November 2, 2023
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Yuya SUZUKI, Kengo TAKEDA
  • Publication number: 20230319482
    Abstract: A loudspeaker including a magnetic circuit including a magnetic gap, a voice coil body inserted in the magnetic gap, a diaphragm attached to the voice coil body, transmission members arranged on a lateral side of the extend magnetic circuit along the magnetic circuit with a predetermined gap to transmit an electric signal to be input to the voice coil body, and a housing made of a resin and integrated with the magnetic circuit and the transmission members. The transmission members include externally exposed portions and internally exposed portions.
    Type: Application
    Filed: June 6, 2023
    Publication date: October 5, 2023
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Kazuma FUJIOKA, Kengo TAKEDA, Tetsushi ITANO
  • Patent number: 11732321
    Abstract: Provided are: a steel sheet having a high strength and excellent stretch formability; and a method of producing the same. The steel sheet has prescribed chemical composition and structure, in which the integration degree of the (111)<112> orientation of ferrite is 3.0 or higher, and the integration degree of the (252)<2-11> orientation of martensite and tempered martensite is 5.0 or lower. The method of producing the steel sheet includes: the step of continuously casting a molten steel having the prescribed chemical composition, and performing 5 to 40% rolling reduction at a temperature of 800° C. to lower than 1,200° C. in a period after the continuous casting until cooling to room temperature; the hot rolling step of performing hot rolling with a finishing temperature of 650 to 950° C.; the step of coiling the resulting hot-rolled steel sheet at a coiling temperature of 400 to 700° C.; the step of retaining the hot-rolled steel sheet at (coiling start temperature+20° C. to 100° C.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: August 22, 2023
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Kengo Takeda, Hitoshi Nikaido, Hiroyuki Kawata, Takafumi Yokoyama
  • Publication number: 20230257843
    Abstract: This steel sheet has a predetermined chemical composition, the metallurgical structure at a thickness ¼ portion is, by area ratio, martensite: 40% to 97%, ferrite+bainite: 50% or less, residual austenite: 3% to 20% and a remainder in microstructure: 5% or less, the aspect ratio of residual austenite having an aspect ratio of 3 or more is 80% or more with respect to the total area of residual austenite, and the number of carbides having a grain diameter of 8 to 40 nm per square micrometer is five or more in the residual austenite.
    Type: Application
    Filed: July 15, 2021
    Publication date: August 17, 2023
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Eriko TSUKAMOTO, Kengo TAKEDA
  • Patent number: 11709449
    Abstract: A fixing device 9 includes a nozzle unit 9A and an opposite electrode 9B. The nozzle unit 9A sprays a fixing solution to a sheet S on which a toner image is formed. The opposite electrode 9B is located at an interval from the nozzle unit 9A. The opposite electrode 9B is applied with a voltage. The opposite electrode 9B has a first flat plate 31 and a plurality of first projections 32. The first flat plate 31 extends in a first direction. The plurality of first projections 32 extends from the first flat plate 31 in a second direction that is a direction facing from the opposite electrode 9B toward the nozzle unit 9A. The plurality of first projections 32 are aligned in the first direction.
    Type: Grant
    Filed: September 28, 2021
    Date of Patent: July 25, 2023
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Kengo Takeda, Yutaka Kakigahara, Masamitsu Takahashi, Satoshi Murata, Masataka Kamiya
  • Patent number: 11698596
    Abstract: A fixing device is for fixing a developing agent image to a recording sheet by electrostatically spraying a charged fixing solution toward the developing agent image on the sheet. The fixing device includes a container portion, a plurality of nozzles, and a potential difference generating portion. The container portion is configured to store therein the fixing solution. The plurality of nozzles is in communication with the container portion and configured to spray the fixing solution toward the developing agent image. The potential difference generating portion is configured to generate a potential difference between the fixing solution stored in the plurality of nozzles and the recording sheet conveyed at a position separated from the plurality of nozzles.
    Type: Grant
    Filed: May 13, 2021
    Date of Patent: July 11, 2023
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Yutaka Kakigahara, Kengo Takeda, Jun Mihara, Satoshi Murata, Shinya Yamamoto, Tomoaki Hattori, Kumiko Sakaguchi, Takayuki Higuchi, Tatsuya Ezaka, Emi Shimizu, Kentaro Murayama
  • Publication number: 20230193415
    Abstract: In a steel sheet according to the present embodiment, a Ti content and a N content satisfy Ti?3.5×N?0.003, at a sheet thickness ¼ position, a metallographic structure includes 90% or more of martensite in terms of volume fraction, at the sheet thickness ¼ position, a number density of TiC having a circle equivalent diameter of 1 to 500 nm is 3.5×104 particles/mm2 or more, at the sheet, thickness ¼ position, a value of a median value of a Mn concentration+3? is 5.00% or less, and a hardness measured at the sheet thickness ¼ position is 1.30 times or more a hardness measured at a position 50 ?m deep from a surface of the steel sheet.
    Type: Application
    Filed: August 16, 2021
    Publication date: June 22, 2023
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Arisa IKEDA, Kengo TAKEDA
  • 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
  • Patent number: 11635719
    Abstract: A fixing device 9 has a nozzle unit 9A. The nozzle unit 9A sprays the fixing solution to a sheet S on which a toner image is formed. The nozzle unit 9A has a housing 21, a nozzle electrode 23 and a plurality of nozzles 22. The plurality of nozzles 22 has a first nozzle 22A and a second nozzle 22B located at an interval from the first nozzle 22A in a first direction, and the nozzle electrode 23 is located inside the housing 21. The nozzle electrode 23 extends in the first direction. A length L1 of the nozzle electrode 23 in the first direction is greater than the interval between the first nozzle 22A and the second nozzle 22B in the first direction.
    Type: Grant
    Filed: September 28, 2021
    Date of Patent: April 25, 2023
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Yutaka Kakigahara, Masamitsu Takahashi, Satoshi Murata, Kengo Takeda, Masataka Kamiya