Patents by Inventor Hirokazu Sugihara

Hirokazu Sugihara 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: 20220195555
    Abstract: A grain oriented electrical steel sheet is produced by heating a steel slab containing, by mass %, C:0.02-0.10%, Si:2.0-5.0%, Mn:0.01-1.00%, sol. Al:0.01-0.04%, N:0.004-0.020% and S+Se:0.002-0.040% to a temperature of higher than 1280° C., and subjecting the sheet to a hot rolling, a hot-band annealing, a single cold rolling or two or more cold rollings having an intermediate annealing between each cold rolling and a primary recrystallization annealing combined with a decarburization annealing, applying an annealing separator onto a steel sheet surface, and subjecting the sheet to a finish annealing and a flattening annealing, a rapid cooling is conducted at an average cooling rate of not less than 200° C./s from 800° C. to 300° C. in the cooling process from a maximum achieving temperature in at least one annealing of the hot-band annealing and the intermediate annealing.
    Type: Application
    Filed: April 22, 2020
    Publication date: June 23, 2022
    Applicant: JFE STEEL CORPORATION
    Inventors: Yuiko EHASHI, Masanori TAKENAKA, Hirokazu SUGIHARA, Soshi YOSHIMOTO
  • Publication number: 20220152694
    Abstract: A method for continuously casting steel capable of reducing center segregation that occurs in a slab. In a section in a continuous casting machine in a slab withdrawal direction, a section from a start point at which the average value of solid phase ratios along a thickness direction at a widthwise center of a slab is within a range of 0.4 or more and 0.8 or less to an end point at which the average value of solid phase ratios along the thickness direction at the widthwise center of the slab is greater than the average value of solid phase ratios at the start point and is 1.0 or less is set as a first section. The slab is cooled by water in the first section at a water flow rate per surface area of the slab within a range of 50 L/(m2×min) or more and 2,000 L/(m2×min) or less.
    Type: Application
    Filed: March 27, 2020
    Publication date: May 19, 2022
    Applicant: JFE STEEL CORPORATION
    Inventors: Shuhei IRIE, Satoshi UEOKA, Hirokazu SUGIHARA, Hiroyuki FUKUDA, Norichika ARAMAKI, Akitoshi MATSUI, Kenichi OSUKA, Sho KOKUFU
  • Publication number: 20220042137
    Abstract: When a grain-oriented electrical steel sheet is produced by heating a steel slab containing, by mass %, C: 0.020 to 0.10%, Si: 2.0 to 4.0%, Mn: 0.005 to 0.50%, Al: less than 0.010%, N, S and Se: less than 0.0050% each to a temperature of not higher than 1280° C., subjecting slab to hot rolling, hot-band annealing, single cold rolling or two or more cold rollings having intermediate annealing between each cold rolling and a primary recrystallization annealing combined with decarburization annealing, applying annealing separator onto steel sheet surface, and subjecting steel sheet to finish annealing and a flattening annealing, a rapid cooling is conducted at an average cooling rate of not less than 200° C./s from 800° C. to 300° C. in cooling process from maximum achieving temperature in at least one of hot band annealing and intermediate annealing, whereby grain-oriented electrical steel sheet having excellent magnetic properties is stably produced.
    Type: Application
    Filed: April 22, 2020
    Publication date: February 10, 2022
    Applicant: JFE STEEL CORPORATION
    Inventors: Yuiko EHASHI, Yukihiro SHINGAKI, Hirokazu SUGIHARA, Soshi YOSHIMOTO
  • Patent number: 11125721
    Abstract: Provided are a method for measuring the magnetic transformation rate of a steel sheet in an annealing furnace and an apparatus for measuring the same, and a continuous annealing process and a continuous galvanizing process which utilize the method and the apparatus. One such method includes delivering an alternating-current driving signal to the surface of the steel sheet by using an air-core driving coil having a size larger than, a width of the steel sheet, measuring the driving signal reflected by the steel sheet by using air-core receiving coils having a size larger than the width of the steel sheet, and determining the magnetic transformation rate of the steel sheet by using a measurement processing unit based on a distance between the steel sheet and the driving coil which has been corrected by using the measured values of the driving signal obtained by using the receiving coils.
    Type: Grant
    Filed: May 23, 2018
    Date of Patent: September 21, 2021
    Assignee: JFE Steel Corporation
    Inventors: Yoshimichi Hino, Hirokazu Sugihara
  • Publication number: 20210148859
    Abstract: Provided are a method for measuring the magnetic transformation rate of a steel sheet in an annealing furnace and an apparatus for measuring the same, and a continuous annealing process and a continuous galvanizing process which utilize the method and the apparatus. One such method includes delivering an alternating-current driving signal to the surface of the steel sheet by using an air-core driving coil having a size larger than, a width of the steel sheet, measuring the driving signal reflected by the steel sheet by using air-core receiving coils having a size larger than the width of the steel sheet, and determining the magnetic transformation rate of the steel sheet by using a measurement processing unit based on a distance between the steel sheet and the driving coil which has been corrected by using the measured values of the driving signal obtained by using the receiving coils.
    Type: Application
    Filed: May 23, 2018
    Publication date: May 20, 2021
    Applicant: JFE Steel Corporation
    Inventors: Yoshimichi Hino, Hirokazu Sugihara
  • Patent number: 10844449
    Abstract: A rapid-cooling quenching apparatus in which a high-temperature metal sheet is dipped and cooled in a liquid and a rapid-cooling quenching method for a steel sheet are provided. The rapid-cooling quenching apparatus includes a water tank containing the liquid in which the metal sheet is dipped, a jetting device having a plurality of nozzles through which the liquid is jetted onto front and back surfaces of the metal sheet and at least some of which are placed in the liquid in the water tank, and a pair or a plurality of pairs of restraining rolls which are placed between an entrance-side end of the jetting device and an exit-side end of the jetting device and restrain the metal sheet, in which nozzles nearest to the restraining rolls are inclined toward the restraining rolls from a horizontal plane in the jetting device.
    Type: Grant
    Filed: December 26, 2016
    Date of Patent: November 24, 2020
    Assignee: JFE STEEL CORPORATION
    Inventors: Soshi Yoshimoto, Hirokazu Sugihara, Fujio Tanaka, Tomohiro Hashimukai
  • Patent number: 10455648
    Abstract: The invention proposes a method for heating a steel sheet wherein the generation of buckling can be prevented regardless of presence or absence of rolls restraining the steel sheet by antecedently heating the widthwise central portion of the steel sheet with a solenoid type induction heating coil having a convex form projected onto the surface of the steel sheet toward an upstream side in rapidly heating the continuously traveling steel sheet, whereby an isotherm of the steel sheet in the heating is a convex form toward the upstream side, so that a large wrinkle is generated on the steel sheet, and also proposes a heating apparatus used in this method.
    Type: Grant
    Filed: July 25, 2012
    Date of Patent: October 22, 2019
    Assignee: JFE STEEL CORPORATION
    Inventors: Yoshimichi Hino, Hirokazu Sugihara
  • Publication number: 20190010564
    Abstract: A rapid-cooling quenching apparatus in which a high-temperature metal sheet is dipped and cooled in a liquid and a rapid-cooling quenching method for a steel sheet are provided. The rapid-cooling quenching apparatus includes a water tank containing the liquid in which the metal sheet is dipped, a jetting device having a plurality of nozzles through which the liquid is jetted onto front and back surfaces of the metal sheet and at least some of which are placed in the liquid in the water tank, and a pair or a plurality of pairs of restraining rolls which are placed between an entrance-side end of the jetting device and an exit-side end of the jetting device and restrain the metal sheet, in which nozzles nearest to the restraining rolls are inclined toward the restraining rolls from a horizontal plane in the jetting device.
    Type: Application
    Filed: December 26, 2016
    Publication date: January 10, 2019
    Applicant: JFE Steel Corporation
    Inventors: Soshi Yoshimoto, Hirokazu Sugihara, Fujio Tanaka, Tomohiro Hashimukai
  • Patent number: 9758847
    Abstract: Provided is a hot-rolled steel sheet having a composition containing 0.04 mass percent to 0.20 mass percent C, 0.7 mass percent to 2.3 mass percent Si, 0.8 mass percent to 2.8 mass percent Mn, 0.1 mass percent or less P, 0.01 mass percent or less S, 0.1 mass percent or less Al, and 0.008 mass percent or less N, the remainder being Fe and inevitable impurities. Internal oxides containing one or more selected from the group consisting of Si, Mn, and Fe are present at grain boundaries and in grains in a base metal. The internal oxides present at the grain boundaries in the base metal are located within 5 ?m from the surface of the base metal. The difference between the depths at which the internal oxides are formed in the cross direction of the steel sheet is 2 ?m or less.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: September 12, 2017
    Assignee: JFE Steel Corporation
    Inventors: Mai Miyata, Yoshitsugu Suzuki, Yasunobu Nagataki, Yoshiyasu Kawasaki, Hirokazu Sugihara
  • Patent number: 8931321
    Abstract: A hot rolled steel sheet cooling apparatus includes a gradual cooling header 2 including a rod-like cooling water nozzle 3 for gradual cooling and a rapid cooling header 4 including a rod-like cooling water nozzle 5 for rapid cooling such that the headers constitute a cooling unit 9. The cooling unit 9 includes an elevating unit 7 capable of moving upward and downward in unison with the cooling unit. In cooling the upper surface of a hot rolled steel sheet (hot rolled steel strip or steel plate), uniform and stable cooling is achieved while both of high cooling rate and low cooling rate are ensured.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: January 13, 2015
    Assignee: JFE Steel Corporation
    Inventors: Satoshi Ueoka, Hirokazu Sugihara, Takashi Kuroki, Nobuo Nishiura, Tsutomu Sugiyama
  • Publication number: 20140314616
    Abstract: Provided is a hot-rolled steel sheet having a composition containing 0.04 mass percent to 0.20 mass percent C, 0.7 mass percent to 2.3 mass percent Si, 0.8 mass percent to 2.8 mass percent Mn, 0.1 mass percent or less P, 0.01 mass percent or less S, 0.1 mass percent or less Al, and 0.008 mass percent or less N, the remainder being Fe and inevitable impurities. Internal oxides containing one or more selected from the group consisting of Si, Mn, and Fe are present at grain boundaries and in grains in a base metal. The internal oxides present at the grain boundaries in the base metal are located within 5 ?m from the surface of the base metal. The difference between the depths at which the internal oxides are formed in the cross direction of the steel sheet is 2 ?m or less.
    Type: Application
    Filed: November 2, 2012
    Publication date: October 23, 2014
    Applicant: JFE STEEL CORPORATION
    Inventors: Mai Miyata, Yoshitsugu Suzuki, Yasunobu Nagataki, Yoshiyasu Kawasaki, Hirokazu Sugihara
  • Publication number: 20140124503
    Abstract: The invention proposes a method for heating a steel sheet wherein the generation of buckling can be prevented regardless of presence or absence of rolls restraining the steel sheet by antecedently heating the widthwise central portion of the steel sheet with a solenoid type induction heating coil having a convex form projected onto the surface of the steel sheet toward an upstream side in rapidly heating the continuously traveling steel sheet, whereby an isotherm of the steel sheet in the heating is a convex form toward the upstream side, so that a large wrinkle is generated on the steel sheet, and also proposes a heating apparatus used in this method.
    Type: Application
    Filed: July 25, 2012
    Publication date: May 8, 2014
    Applicant: JFE STEEL CORPORATION
    Inventors: Yoshimichi Hino, Hirokazu Sugihara
  • Publication number: 20120103052
    Abstract: A hot rolled steel sheet cooling apparatus includes a gradual cooling header 2 including a rod-like cooling water nozzle 3 for gradual cooling and a rapid cooling header 4 including a rod-like cooling water nozzle 5 for rapid cooling such that the headers constitute a cooling unit 9. The cooling unit 9 includes an elevating unit 7 capable of moving upward and downward in unison with the cooling unit. In cooling the upper surface of a hot rolled steel sheet (hot rolled steel strip or steel plate), uniform and stable cooling is achieved while both of high cooling rate and low cooling rate are ensured.
    Type: Application
    Filed: March 25, 2010
    Publication date: May 3, 2012
    Applicant: JFE Steel Corporation
    Inventors: Satoshi Ueoka, Hirokazu Sugihara, Takashi Kuroki, Nobuo Nishiura, Tsutomu Sugiyama
  • Patent number: 7594984
    Abstract: The present invention provides an apparatus for measuring activity signals of a biological sample comprising: a measurement chamber (A) storing a target liquid containing a biological sample; a porous insulating substrate (5) provided with a measurement electrode (1) on at least one side; and a conveying device (8) which conveys the target liquid stored in the measurement chamber (A) and passes the target liquid through the porous insulating substrate (5) from the measurement electrode (1) side, wherein the conveying device (8) is operated to trap the biological sample contained in the target liquid onto the measurement electrode (1), so that the activity signals of the biological sample are measured through the measurement electrode (1). According to the apparatus, activity signals emitted from the biological sample can be detected easily, rapidly and accurately.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: September 29, 2009
    Assignee: Panasonic Corporation
    Inventors: Hiroaki Oka, Nobuhiko Ozaki, Hirokazu Sugihara
  • Patent number: 7585400
    Abstract: The present invention provides a chip 100 that enables an immunoassay with high accuracy and without requiring a high volatile reagent. The chip 100 includes a chip substrate 20, a reagent mixture 12 and potassium ferricyanide 11 that are immobilized leaving a space in between on the chip substrate 20. The reagent mixture 12 includes at least one selected from NADP and NADPH, malate dehydrogenase, and a substrate of malate dehydrogenase. The chip 100 further includes diaphorase, immobilized on the chip substrate 20, as a part of or a component other than the reagent mixture 12.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: September 8, 2009
    Assignee: Panasonic Corporation
    Inventors: Hidenobu Yaku, Hirokazu Sugihara
  • Patent number: 7521214
    Abstract: Immobilization of malate dehydrogenase on a substrate using a glycerol solution containing malate dehydrogenase is achieved through dropping a mixed solution obtained by adding at least one selected from malic acid and malate to the glycerol containing malate dehydrogenase on the substrate, and drying it thereon. It is preferable to prepare the mixed solution by adding the malate to the glycerol solution containing malate dehydrogenase. The malate is preferably at least one selected from potassium malate and sodium malate.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: April 21, 2009
    Assignee: Panasonic Corporation
    Inventors: Hidenobu Yaku, Hirokazu Sugihara
  • Publication number: 20080308419
    Abstract: The present invention provides a chip 100 that enables an immunoassay with high accuracy and without requiring a high volatile reagent. The chip 100 includes a chip substrate 20, a reagent mixture 12 and potassium ferricyanide 11 that are immobilized leaving a space in between on the chip substrate 20. The reagent mixture 12 includes at least one selected from NADP and NADPH, malate dehydrogenase, and a substrate of malate dehydrogenase. The chip 100 further includes diaphorase, immobilized on the chip substrate 20, as a part of or a component other than the reagent mixture 12.
    Type: Application
    Filed: October 30, 2007
    Publication date: December 18, 2008
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD
    Inventors: Hidenobu Yaku, Hirokazu Sugihara
  • Patent number: 7462324
    Abstract: A measurement device 10 includes a measurement cell 11. The measurement cell 11 includes a substrates 17 and a substrate 16 formed on the substrate 17. The substrates 16 and 17 are bonded to each other. Thus, a flow pass 9 is formed in the measurement cell 11. As shown in FIG. 3, on the substrate 17 of the measurement cell 11, provided are a concave well 19, a protruding microelectrode 1 connected to a terminal 4a and formed on a side wall surface of the well 19, communicating tubes 15a and 15b connected to both of side surfaces of the well 19 (i.e., the flow pass 9) to face to each other, resistance baths 6a and 6b connected to the communicating tubes 15a and 15b, thin film resistors 3a and 3b arranged in the resistance baths 6a and 6b, and a reference electrode 2 connected to a terminal 4b.
    Type: Grant
    Filed: November 19, 2002
    Date of Patent: December 9, 2008
    Assignee: Panasonic Corporation
    Inventors: Nobuhiko Ozaki, Hiroaki Oka, Hirokazu Sugihara
  • Patent number: 7449445
    Abstract: A peptide nanofiber having conductivity is provided. A conductive peptide nanofiber which includes a nanofiber formed through a manner of self-assembly of a peptide that has a nanofiber-forming ability and consists of an amino acid sequence of Xaa-Phe-Ile-Val-Ile-Phe-Xaa (SEQ ID NO: 1, wherein N-terminal Xaa is an arbitrary amino acid residue Xaa1; C-terminal Xaa is an arbitrary amino acid residue Xaa2; and Xaa1 and Xaa2 are an amino acid having an acidic side chain, an amino acid having a basic side chain, or an amino acid having a side chain with polarity according as acidity and basicity) or a derivative of the peptide and a conductive substance added thereto, the aforementioned conductive substance being added to an amino group of the peptide or the derivative.
    Type: Grant
    Filed: October 19, 2005
    Date of Patent: November 11, 2008
    Assignees: Panasonic Corporation, National University Corporation Kobe University
    Inventors: Kentaro Onizuka, Shuhei Tanaka, Hirokazu Sugihara, Atsuo Tamura
  • Patent number: D928330
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: August 17, 2021
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Ichiro Itagaki, Hirokazu Sugihara, Shunichi Nakamaru, Hiromi Takarada, Ryo Matsuo