Patents by Inventor Atsushi Seto

Atsushi Seto 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: 10701768
    Abstract: The disclosed heat generating apparatus includes: a rotary shaft, a heat generator, a plurality of permanent magnets, a magnet holder, and a heat recovery system. The rotary shaft is rotatably supported by a non-rotative body. The heat generator is fixed to the body. The magnets are arrayed to face the heat generator with a gap such that magnetic pole arrangements of adjacent ones of the magnets are opposite to each other. The magnet holder holds the magnets and is fixed to the rotary shaft. The heat recovery system collects heat generated in the heat generator. A non-magnetic partition wall is provided in the gap between the heat generator and the magnets.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: June 30, 2020
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Hiroyuki Yamaguchi, Atsushi Seto, Kenji Imanishi, Hiroshi Nogami
  • Patent number: 10667334
    Abstract: The disclosed heat generating apparatus includes: a rotary shaft, a heat generator, a plurality of permanent magnets, a magnet holder, and a heat recovery system. The rotary shaft is rotatably supported by a non-rotative body. The heat generator is fixed to the rotary shaft. The magnets are arrayed to face the heat generator with a gap such that magnetic pole arrangements of adjacent ones of the magnets are opposite to each other. The magnet holder holds the magnets and is fixed to the body. The heat recovery system collects heat generated in the heat generator.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: May 26, 2020
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Hiroyuki Yamaguchi, Atsushi Seto, Kenji Imanishi, Hiroshi Nogami
  • Patent number: 10468006
    Abstract: A transportation vehicle part includes: a patch member 13 constructed of a plate-like metal patch panel 12, and a vibration attenuating resin layer 14 provided along a surface of the patch panel 12; and a metal base plate 16 closely adhered with the vibration attenuating resin layer 14 of the patch member 13 and affixed with the patch member 13. The patch panel 12 is produced via a rolling step. An acute angle between a longitudinal direction and a rolling direction of the patch panel 12 is 30 to 70 degrees. According to this structure, the natural frequency in a primary mode is made high, whereby the vibration characteristic is improved.
    Type: Grant
    Filed: February 2, 2015
    Date of Patent: November 5, 2019
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Atsushi Seto, Koichi Hamada
  • Patent number: 10330386
    Abstract: A steel sheet heating method that heats a steel sheet (K) to be pressed before hot press molding includes: bringing the steel sheet into a heating furnace (10) including a heater (15) on an inside surface of the heating furnace in a state where the steel sheet is supported in a vertical direction while an unnecessary portion of the steel sheet that becomes unnecessary after molding is fixedly supported by a support member (30); and performing heating at a prescribed temperature in the heating furnace, then taking the steel sheet out of the heating furnace, and after that cutting and removing the unnecessary portion before hot press molding or during hot press molding.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: June 25, 2019
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Hiroshi Fukuchi, Naruhiko Nomura, Atsushi Seto
  • Patent number: 10195656
    Abstract: In hot press forming a thin steel sheet K, when cooling the thin steel sheet K by supplying a refrigerant to an ejection hole (27) communicated from a supply path (28) inside a lower mold (12), precooling in which an ejection amount per unit time period of the refrigerant from the ejection hole (27) is suppressed is carried out, and thereafter, main cooling is carried out by increasing the ejection amount per unit time period.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: February 5, 2019
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Hiroshi Fukuchi, Naruhiko Nomura, Atsushi Seto
  • Patent number: 9978353
    Abstract: A transportation vehicle part that includes: a patch member constructed of a plate-like metal patch panel, and a vibration attenuating resin layer provided along a surface of the patch panel; and a metal base plate closely adhered with the vibration attenuating resin layer of the patch member and affixed with the patch member; according to this configuration, the transportation vehicle part which has a superior vibration characteristic without greatly increasing the thickness and the weight of the transportation vehicle part is provided.
    Type: Grant
    Filed: February 2, 2015
    Date of Patent: May 22, 2018
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Atsushi Seto, Koichi Hamada
  • Patent number: 9944169
    Abstract: A fuel tank for a vehicle is formed of a tank main body in which an upper tank and a lower tank are mutually joined to form a closed space in which fuel is housed, and a sub-tank fixed to a bottom surface part of the lower tank by spot welding, in which a plurality of rows of the spot welding are set along a longitudinal direction of the lower tank with an interval therebetween in a width direction of the sub-tank, at least one bead positioned between the rows of the spot welding and extending continuously along the longitudinal direction of the lower tank is formed on the bottom surface part of the lower tank, and a lower surface of the sub-tank has no portion that is not brought into contact with the bottom surface part of the lower tank except for the bead.
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: April 17, 2018
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Yuuichi Yosida, Shuji Yamamoto, Atsushi Seto
  • Patent number: 9903023
    Abstract: A hot rolled steel sheet consisting of, in mass %, C: 0.05% to 0.15%, Si: 0% to 0.2%, Al: 0.5% to 3.0%, Mn: 1.2% to 2.5%, P: 0.1% or less, S: 0.01% or less, N: 0.007% or less, Ti: 0.03% to 0.10%, Nb: 0.008% to 0.06%, V: 0% to 0.12%, one or more of Cr, Cu, Ni, and Mo: 0% to 2.0% in total, B: 0% to 0.005%, one or more of Ca, Mg, La, and Ce: 0% to 0.01% in total, total amount of Si and Al: 0.8×(Mn?1)% or more, total amount of Ti and Nb: 0.04% to 0.14%, and the balance: Fe and impurities. In a structure of steel, a total area ratio of martensite and retained austenite is 3% to 20%, an area ratio of ferrite is 50% to 96%, and an area ratio of pearlite is 3% or less. In a superficial layer part, the thickness in a sheet thickness direction of a region in which a network-like oxide is present is less than 0.5 ?m, and a maximum tensile strength is 720 MPa or more.
    Type: Grant
    Filed: September 26, 2013
    Date of Patent: February 27, 2018
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Naoki Maruyama, Tatsuo Yokoi, Hiroyuki Tanahashi, Atsushi Seto, Atsushi Itami
  • Publication number: 20180035493
    Abstract: A heat generating apparatus includes a rotary shaft, a heat generating drum, a plurality of permanent magnets, a magnet holding ring, a switching mechanism, and a heat recovery system. The magnets are arrayed in a circumferential direction along the circumference of the rotary shaft throughout the whole circumference such that magnetic pole arrangements of circumferentially adjacent ones of the permanent magnets are opposite to each other. The magnet holding ring holds the magnets. The switching mechanism switches between a state to generate magnetic circuits between the magnets and the heat generating drum and a state to generate no magnetic circuits between the magnets and the heat generating drum. The heat recovery system collects heat generated in the heat generating drum. Thereby, thermal energy can be recovered from the kinetic energy of the rotary shaft efficiently.
    Type: Application
    Filed: February 23, 2016
    Publication date: February 1, 2018
    Inventors: Kenji IMANISHI, Atsushi SETO, Hiroshi NOGAMI, Eisuke NAKAYAMA, Hiroyuki YAMAGUCHI
  • Publication number: 20170339752
    Abstract: The disclosed heat generating apparatus includes: a rotary shaft, a heat generator, a plurality of permanent magnets, a magnet holder, and a heat recovery system. The rotary shaft is rotatably supported by a non-rotative body. The heat generator is fixed to the body. The magnets are arrayed to face the heat generator with a gap such that magnetic pole arrangements of adjacent ones of the magnets are opposite to each other. The magnet holder holds the magnets and is fixed to the rotary shaft. The heat recovery system collects heat generated in the heat generator. A non-magnetic partition wall is provided in the gap between the heat generator and the magnets.
    Type: Application
    Filed: November 5, 2015
    Publication date: November 23, 2017
    Inventors: Hiroyuki YAMAGUCHI, Atsushi SETO, Kenji IMANISHI, Hiroshi NOGAMI
  • Publication number: 20170339753
    Abstract: The disclosed heat generating apparatus includes: a rotary shaft, a heat generator, a plurality of permanent magnets, a magnet holder, and a heat recovery system. The rotary shaft is rotatably supported by a non-rotative body. The heat generator is fixed to the rotary shaft. The magnets are arrayed to face the heat generator with a gap such that magnetic pole arrangements of adjacent ones of the magnets are opposite to each other. The magnet holder holds the magnets and is fixed to the body. The heat recovery system collects heat generated in the heat generator.
    Type: Application
    Filed: November 5, 2015
    Publication date: November 23, 2017
    Inventors: Hiroyuki YAMAGUCHI, Atsushi SETO, Kenji IMANISHI, Hiroshi NOGAMI
  • Publication number: 20170069304
    Abstract: [Object] A transportation vehicle part for appropriately improving a vibration characteristic, and a panel member having a vibration characteristic that is appropriately improved, are provided. [Solution] A transportation vehicle part relating to the present invention includes: a patch member 13 constructed of a plate-like metal patch panel 12, and a vibration attenuating resin layer 14 provided along a surface of the patch panel 12; and a metal base plate 16 closely adhered with the vibration attenuating resin layer 14 of the patch member 13 and affixed with the patch member 13. The patch panel 12 is produced via a rolling step. An acute angle between a longitudinal direction and a rolling direction of the patch panel 12 is 30 to 70 degrees. According to this structure, the natural frequency in a primary mode is made high, whereby the vibration characteristic is improved.
    Type: Application
    Filed: February 2, 2015
    Publication date: March 9, 2017
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Atsushi SETO, Koichi HAMADA
  • Publication number: 20170011730
    Abstract: [Object] To provide a transportation vehicle part which has a superior vibration characteristic without greatly increasing the thickness and the weight of the transportation vehicle part and is to provide a panel member for improving the vibration characteristic of the transportation vehicle part without greatly increasing the thickness and the weight of the transportation vehicle part. [Solution] A transportation vehicle part according to the present invention includes: a patch member constructed of a plate-like metal patch panel, and a vibration attenuating resin layer provided along a surface of the patch panel; and a metal base plate closely adhered with the vibration attenuating resin layer of the patch member and affixed with the patch member. According to this configuration, the transportation vehicle part which has a superior vibration characteristic without greatly increasing the thickness and the weight of the transportation vehicle part is provided.
    Type: Application
    Filed: February 2, 2015
    Publication date: January 12, 2017
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Atsushi SETO, Koichi HAMADA
  • Publication number: 20160320128
    Abstract: A steel sheet heating method that heats a steel sheet (K) to be pressed before hot press molding includes: bringing the steel sheet into a heating furnace (10) including a heater (15) on an inside surface of the heating furnace in a state where the steel sheet is supported in a vertical direction while an unnecessary portion of the steel sheet that becomes unnecessary after molding is fixedly supported by a support member (30); and performing heating at a prescribed temperature in the heating furnace, then taking the steel sheet out of the heating furnace, and after that cutting and removing the unnecessary portion before hot press molding or during hot press molding.
    Type: Application
    Filed: January 23, 2015
    Publication date: November 3, 2016
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Hiroshi FUKUCHI, Naruhiko NOMURA, Atsushi SETO
  • Publication number: 20160167101
    Abstract: In hot press forming a thin steel sheet K, when cooling the thin steel sheet K by supplying a refrigerant to an ejection hole (27) communicated from a supply path (28) inside a lower mold (12), precooling in which an ejection amount per unit time period of the refrigerant from the ejection hole (27) is suppressed is carried out, and thereafter, main cooling is carried out by increasing the ejection amount per unit time period.
    Type: Application
    Filed: September 11, 2014
    Publication date: June 16, 2016
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Hiroshi FUKUCHI, Naruhiko NOMURA, Atsushi SETO
  • Publication number: 20160067760
    Abstract: Provided is a surface layer grain refining hot-shearing method including: heating and keeping a steel sheet in a temperature range of from Ac3 to 1400° C. to austenitize the steel sheet; subsequently shearing the steel sheet in a state in which the steel sheet is placed on a die; and quenching by rapidly cooling the sheared steel sheet, wherein a start temperature of the shearing is set to be a temperature (° C.) obtained by adding a temperature of from 30° C. to 140° C. to a previously measured Ar3 of the steel sheet.
    Type: Application
    Filed: May 9, 2013
    Publication date: March 10, 2016
    Inventors: Takashi MATSUNO, Yoshihito SEKITO, Tamaki SUZUKI, Kaoru KAWASAKI, Atsushi SETO
  • Patent number: 9206940
    Abstract: A structure including a structural member configured like a frame with four sides is disclosed. A closed cross-section structural member serving as a reinforcing material is provided in a crossing corner of the structural member. The closed cross-section structural member includes two horizontal portions separated from each other in a thickness direction of the structural member and extending in an in-plane direction of the structural member and two vertical portions one of which connects first ends of the two horizontal portions together and the other of which connects second ends of the two horizontal portions together. The closed cross-section structural member includes a first opening formed therein facing an inner-peripheral flat surface of the structural member and a second opening formed therein facing inside of the structural member.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: December 8, 2015
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Atsushi Seto, Takashi Matsuno, Eisaku Sakurada
  • Publication number: 20150218708
    Abstract: A hot rolled steel sheet consisting of, in mass %, C: 0.05% to 0.15%, Si: 0% to 0.2%, Al: 0.5% to 3.0%, Mn: 1.2% to 2.5%, P: 0.1% or less, S: 0.01% or less, N: 0.007% or less, Ti: 0.03% to 0.10%, Nb: 0.008% to 0.06%, V: 0% to 0.12%, one or more of Cr, Cu, Ni, and Mo: 0% to 2.0% in total, B: 0% to 0.005%, one or more of Ca, Mg, La, and Ce: 0% to 0.01% in total, total amount of Si and Al: 0.8×(Mn?1)% or more, total amount of Ti and Nb: 0.04% to 0.14%, and the balance: Fe and impurities. In a structure of steel, a total area ratio of martensite and retained austenite is 3% to 20%, an area ratio of ferrite is 50% to 96%, and an area ratio of pearlite is 3% or less. In a superficial layer part, the thickness in a sheet thickness direction of a region in which a network-like oxide is present is less than 0.5 ?m, and a maximum tensile strength is 720 MPa or more.
    Type: Application
    Filed: September 26, 2013
    Publication date: August 6, 2015
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Naoki Maruyama, Tatsuo Yokoi, Hiroyuki Tanahashi, Atsushi Seto, Atsushi Itami
  • Publication number: 20150152995
    Abstract: A structure including a structural member configured like a frame with four sides is disclosed. A closed cross-section structural member serving as a reinforcing material is provided in a crossing corner of the structural member. The closed cross-section structural member includes two horizontal portions separated from each other in a thickness direction of the structural member and extending in an in-plane direction of the structural member and two vertical portions one of which connects first ends of the two horizontal portions together and the other of which connects second ends of the two horizontal portions together. The closed cross-section structural member includes a first opening formed therein facing an inner-peripheral flat surface of the structural member and a second opening formed therein facing inside of the structural member.
    Type: Application
    Filed: December 5, 2014
    Publication date: June 4, 2015
    Inventors: Atsushi Seto, Takashi Matsuno, Eisaku Sakurada
  • Patent number: 8979104
    Abstract: A structure (10) for a front section of a vehicle body in a vehicle body (1) comprising a front chamber (3) disposed on the forward side of a vehicle interior (2) is provided with the following: a pair of front side members (11), located within the front chamber, that extend in the longitudinal direction of the vehicle body; a pair of strut towers (16) disposed on either side in the width direction of the front chamber and within which front wheel suspensions are disposed; and reinforcement members (20) that link the top of each strut tower with the front side members that face the strut towers, and that extend between the strut towers and the front side members. This configuration allows a structure for a front section of a vehicle body to be provided that can efficiently improve the rigidity of the vehicle body of an automobile against torsion and against lateral bending, and that can efficiently reduce the weight of the vehicle body by means of thickness reduction using a high-strength steel plate.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: March 17, 2015
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Toshiyuki Niwa, Masayoshi Suehiro, Atsushi Seto, Takeshi Kawachi, Masaaki Mizumura, Seiichi Daimaru, Kaoru Kawasaki, Hatsuhiko Oikawa, Yasunobu Miyazaki, Tatsuya Sakiyama, Nobutaka Shimizu, Naoki Yoshinaga