Patents by Inventor Toshiya Takechi
Toshiya Takechi 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: 11661636Abstract: A method for manufacturing a grain-oriented electrical steel sheet according to an aspect of the present invention includes a step of obtaining a hot-rolled steel sheet by carrying out hot rolling on a slab containing a predetermined component composition with a remainder including Fe and impurities, a step of obtaining a hot-rolled annealed sheet by carrying out hot-rolled sheet annealing as necessary, a step of carrying out pickling to obtain a pickled sheet, a step of carrying out cold rolling to obtain a cold-rolled steel sheet, a step of carrying out primary recrystallization annealing, a step of applying an annealing separating agent including MgO to a surface and then carrying out final annealing to obtain a final-annealed sheet, and a step of applying an insulating coating and then carrying out flattening annealing.Type: GrantFiled: March 19, 2019Date of Patent: May 30, 2023Assignee: NIPPON STEEL CORPORATIONInventors: Nobusato Morishige, Takashi Kataoka, Haruhiko Atsumi, Yasuhiro Mayumi, Toshiya Takechi, Naoto Masumitsu, Tomoya Suenaga, Masamitsu Kubota, Hideyuki Hamamura, Kazuhiko Fukutani
-
Publication number: 20210017619Abstract: A method for manufacturing a grain-oriented electrical steel sheet according to an aspect of the present invention includes a step of obtaining a hot-rolled steel sheet by carrying out hot rolling on a slab containing a predetermined component composition with a remainder including Fe and impurities, a step of obtaining a hot-rolled annealed sheet by carrying out hot-rolled sheet annealing as necessary, a step of carrying out pickling to obtain a pickled sheet, a step of carrying out cold rolling to obtain a cold-rolled steel sheet, a step of carrying out primary recrystallization annealing, a step of applying an annealing separating agent including MgO to a surface and then carrying out final annealing to obtain a final-annealed sheet, and a step of applying an insulating coating and then carrying out flattening annealing.Type: ApplicationFiled: March 19, 2019Publication date: January 21, 2021Applicant: NIPPON STEEL CORPORATIONInventors: Nobusato MORISHIGE, Takashi KATAOKA, Haruhiko ATSUMI, Yasuhiro MAYUMI, Toshiya TAKECHI, Naoto MASUMITSU, Tomoya SUENAGA, Masamitsu KUBOTA, Hideyuki HAMAMURA, Kazuhiko FUKUTANI
-
Patent number: 10327287Abstract: The transverse flux induction heating device is allows an alternating magnetic field to intersect the sheet face of a conductive sheet which is conveyed in one direction, thereby inductively heating the conductive sheet. The transverse flux induction heating device includes a heating coil disposed such that a coil face faces the sheet face of the conductive sheet; a core around which the heating coil is coiled; a shielding plate formed of a conductor and disposed between the core and a side end portion in the direction perpendicular to a conveyance direction of the conductive sheet; and a non-conductive 10 soft magnetic material which is attached to the shielding plate, wherein the shielding plate is interposed between the core and the non-conductive soft magnetic material.Type: GrantFiled: August 22, 2018Date of Patent: June 18, 2019Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Kenji Umetsu, Tsutomu Ueki, Yasuhiro Mayumi, Toshiya Takechi
-
Patent number: 10292210Abstract: The transverse flux induction heating device is allows an alternating magnetic field to intersect the sheet face of a conductive sheet which is conveyed in one direction, thereby inductively heating the conductive sheet. The transverse flux induction heating device includes a heating coil disposed such that a coil face faces the sheet face of the conductive sheet; a core around which the heating coil is coiled; a shielding plate formed of a conductor and disposed between the core and a side end portion in the direction perpendicular to a conveyance direction of the conductive sheet; and a non-conductive soft magnetic material which is attached to the shielding plate, wherein the shielding plate is interposed between the core and the non-conductive soft magnetic material.Type: GrantFiled: February 18, 2011Date of Patent: May 14, 2019Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Kenji Umetsu, Tsutomu Ueki, Yasuhiro Mayumi, Toshiya Takechi
-
Publication number: 20180359817Abstract: The transverse flux induction heating device is allows an alternating magnetic field to intersect the sheet face of a conductive sheet which is conveyed in one direction, thereby inductively heating the conductive sheet. The transverse flux induction heating device includes a heating coil disposed such that a coil face faces the sheet face of the conductive sheet; a core around which the heating coil is coiled; a shielding plate formed of a conductor and disposed between the core and a side end portion in the direction perpendicular to a conveyance direction of the conductive sheet; and a non-conductive 10 soft magnetic material which is attached to the shielding plate, wherein the shielding plate is interposed between the core and the non-conductive soft magnetic material.Type: ApplicationFiled: August 22, 2018Publication date: December 13, 2018Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Kenji UMETSU, Tsutomu UEKI, Yasuhiro MAYUMI, Toshiya TAKECHI
-
Patent number: 10085306Abstract: The transverse flux induction heating device allows an alternating magnetic field to intersect the sheet face of a conductive sheet which is conveyed in one direction, thereby inductively heating the conductive sheet. The transverse flux induction heating device includes a heating coil disposed such that a coil face faces the sheet face of the conductive sheet; a core around which the heating coil is coiled; and a shielding plate formed of a conductor and disposed between the core and a side end portion in a direction perpendicular to the conveyance direction of the conductive sheet, wherein the shielding plate has a protruded portion, and the side surface of the protruded portion represents a closed loop when viewed from a direction perpendicular to the coil face.Type: GrantFiled: January 11, 2017Date of Patent: September 25, 2018Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Kenji Umetsu, Tsutomu Ueki, Yasuhiro Mayumi, Toshiya Takechi
-
Patent number: 9942949Abstract: A control unit of an induction heating unit controls AC power output to a heating coil of a transverse type induction heating unit that allows an alternating magnetic field to intersect a sheet surface of a conductive sheet that is being conveyed to inductively heat the conductive sheet. The control unit includes: a magnetic energy recovery switch that outputs AC power to the heating coil; a frequency setting unit that sets an output frequency in response to at least one of the relative permeability, resistivity, and sheet thickness of the conductive sheet; and a gate control unit that controls a switching operation of the magnetic energy recovery switch on the basis of the output frequency set by the frequency setting unit.Type: GrantFiled: December 14, 2015Date of Patent: April 10, 2018Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Kazuhiko Fukutani, Yasuhiro Mayumi, Toshiya Takechi, Kenji Umetsu
-
Patent number: 9907120Abstract: A control unit of an induction heating unit controls AC power output to a heating coil of a transverse type induction heating unit that allows an alternating magnetic field to intersect a sheet surface of a conductive sheet that is being conveyed to inductively heat the conductive sheet. The control unit includes: a magnetic energy recovery switch that outputs AC power to the heating coil; a frequency setting unit that sets an output frequency in response to at least one of the relative permeability, resistivity, and sheet thickness of the conductive sheet; and a gate control unit that controls a switching operation of the magnetic energy recovery switch on the basis of the output frequency set by the frequency setting unit.Type: GrantFiled: December 14, 2015Date of Patent: February 27, 2018Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Kazuhiko Fukutani, Yasuhiro Mayumi, Toshiya Takechi, Kenji Umetsu
-
Publication number: 20170127482Abstract: The transverse flux induction heating device allows an alternating magnetic field to intersect the sheet face of a conductive sheet which is conveyed in one direction, thereby inductively heating the conductive sheet. The transverse flux induction heating device includes a heating coil disposed such that a coil face faces the sheet face of the conductive sheet; a core around which the heating coil is coiled; and a shielding plate formed of a conductor and disposed between the core and a side end portion in a direction perpendicular to the conveyance direction of the conductive sheet, wherein the shielding plate has a protruded portion, and the side surface of the protruded portion represents a closed loop when viewed from a direction perpendicular to the coil face.Type: ApplicationFiled: January 11, 2017Publication date: May 4, 2017Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Kenji UMETSU, Tsutomu UEKI, Yasuhiro MAYUMI, Toshiya TAKECHI
-
Patent number: 9578693Abstract: The transverse flux induction heating device allows an alternating magnetic field to intersect the sheet face of a conductive sheet which is conveyed in one direction, thereby inductively heating the conductive sheet. The transverse flux induction heating device includes a heating coil disposed such that a coil face faces the sheet face of the conductive sheet; a core around which the heating coil is coiled; and a shielding plate formed of a conductor and disposed between the core and a side end portion in a direction perpendicular to the conveyance direction of the conductive sheet, wherein the shielding plate has a protruded portion, and the side surface of the protruded portion represents a closed loop when viewed from a direction perpendicular to the coil face.Type: GrantFiled: February 18, 2011Date of Patent: February 21, 2017Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Kenji Umetsu, Tsutomu Ueki, Yasuhiro Mayumi, Toshiya Takechi
-
Publication number: 20160100459Abstract: A control unit of an induction heating unit controls AC power output to a heating coil of a transverse type induction heating unit that allows an alternating magnetic field to intersect a sheet surface of a conductive sheet that is being conveyed to inductively heat the conductive sheet. The control unit includes: a magnetic energy recovery switch that outputs AC power to the heating coil; a frequency setting unit that sets an output frequency in response to at least one of the relative permeability, resistivity, and sheet thickness of the conductive sheet; and a gate control unit that controls a switching operation of the magnetic energy recovery switch on the basis of the output frequency set by the frequency setting unit.Type: ApplicationFiled: December 14, 2015Publication date: April 7, 2016Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Kazuhiko FUKUTANI, Yasuhiro MAYUMI, Toshiya TAKECHI, Kenji UMETSU
-
Publication number: 20160100458Abstract: A control unit of an induction heating unit controls AC power output to a heating coil of a transverse type induction heating unit that allows an alternating magnetic field to intersect a sheet surface of a conductive sheet that is being conveyed to inductively heat the conductive sheet. The control unit includes: a magnetic energy recovery switch that outputs AC power to the heating coil; a frequency setting unit that sets an output frequency in response to at least one of the relative permeability, resistivity, and sheet thickness of the conductive sheet; and a gate control unit that controls a switching operation of the magnetic energy recovery switch on the basis of the output frequency set by the frequency setting unit.Type: ApplicationFiled: December 14, 2015Publication date: April 7, 2016Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Kazuhiko FUKUTANI, Yasuhiro MAYUMI, Toshiya TAKECHI, Kenji UMETSU
-
Patent number: 9247590Abstract: A control unit of an induction heating unit controls AC power output to a heating coil of a transverse type induction heating unit that allows an alternating magnetic field to intersect a sheet surface of a conductive sheet that is being conveyed to inductively heat the conductive sheet. The control unit includes: a magnetic energy recovery switch that outputs AC power to the heating coil; a frequency setting unit that sets an output frequency in response to at least one of the relative permeability, resistivity, and sheet thickness of the conductive sheet; and a gate control unit that controls a switching operation of the magnetic energy recovery switch on the basis of the output frequency set by the frequency setting unit.Type: GrantFiled: November 22, 2010Date of Patent: January 26, 2016Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Kazuhiko Fukutani, Yasuhiro Mayumi, Toshiya Takechi, Kenji Umetsu
-
Publication number: 20120312805Abstract: The transverse flux induction heating device allows an alternating magnetic field to intersect the sheet face of a conductive sheet which is conveyed in one direction, thereby inductively heating the conductive sheet. The transverse flux induction heating device includes a heating coil disposed such that a coil face faces the sheet face of the conductive sheet; a core around which the heating coil is coiled; and a shielding plate formed of a conductor and disposed between the core and a side end portion in a direction perpendicular to the conveyance direction of the conductive sheet, wherein the shielding plate has a protruded portion, and the side surface of the protruded portion represents a closed loop when viewed from a direction perpendicular to the coil face.Type: ApplicationFiled: February 18, 2011Publication date: December 13, 2012Inventors: Kenji Umetsu, Tsutomu Ueki, Yasuhiro Mayumi, Toshiya Takechi
-
Publication number: 20120305548Abstract: The transverse flux induction heating device is allows an alternating magnetic field to intersect the sheet face of a conductive sheet which is conveyed in one direction, thereby inductively heating the conductive sheet. The transverse flux induction heating device includes a heating coil disposed such that a coil face faces the sheet face of the conductive sheet; a core around which the heating coil is coiled; a shielding plate formed of a conductor and disposed between the core and a side end portion in the direction perpendicular to a conveyance direction of the conductive sheet; and a non-conductive soft magnetic material which is attached to the shielding plate, wherein the shielding plate is interposed between the core and the non-conductive soft magnetic material.Type: ApplicationFiled: February 18, 2011Publication date: December 6, 2012Applicant: NIPPON STEEL CORPORATIONInventors: Kenji Umetsu, Tsutomu Ueki, Yasuhiro Mayumi, Toshiya Takechi
-
Publication number: 20120305547Abstract: A control unit of an induction heating unit controls AC power output to a heating coil of a transverse type induction heating unit that allows an alternating magnetic field to intersect a sheet surface of a conductive sheet that is being conveyed to inductively heat the conductive sheet. The control unit includes: a magnetic energy recovery switch that outputs AC power to the heating coil; a frequency setting unit that sets an output frequency in response to at least one of the relative permeability, resistivity, and sheet thickness of the conductive sheet; and a gate control unit that controls a switching operation of the magnetic energy recovery switch on the basis of the output frequency set by the frequency setting unit.Type: ApplicationFiled: November 22, 2010Publication date: December 6, 2012Inventors: Kazuhiko Fukutani, Yasuhiro Mayumi, Toshiya Takechi, Kenji Umetsu