Patents Examined by Jophy S Koshy
  • Patent number: 12043875
    Abstract: Disclosed is a ferritic stainless steel with improved workability and high temperature strength through control of component composition and precipitate distribution, and a manufacturing method thereof. The ferritic stainless steel excellent in workability and high temperature strength according to an embodiment of the present disclosure includes, in percent (%) by weight of the entire composition, C: 0.0005 to 0.02%, N: 0.005 to 0.02%, Si: 0.01 to 1.0%, Mn: 0.01 to 1.2%, P: 0.001 to 0.05%, Cr: 10.0 to 25.0%, Mo: 1.5 to 3.0%, Nb: 0.3 to 0.7%, W: 0.5 to 2.0%, the remainder of iron (Fe) and other inevitable impurities, and the number of precipitates with an average diameter of 0.5 ?m or less is 105 pieces/mm2 or less.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: July 23, 2024
    Assignee: POSCO CO., LTD
    Inventors: Ji Eon Park, Il Chan Jung, Mi-Nam Park
  • Patent number: 12043883
    Abstract: A high-yield-ratio high-strength electrogalvanized steel sheet having an electrogalvanized coating layer formed on a surface of a base steel sheet, in which the base steel sheet has a certain chemical composition, and a steel microstructure, in which a total area fraction of one or both of bainite containing carbides having an average grain diameter of 50 nm or less and tempered martensite containing carbides having an average grain diameter of 50 nm or less is 90% or more in the whole of the steel microstructure, and in which a total area fraction of one or both of the bainite containing and the tempered martensite containing carbides is 80% or more in a region from the surface of the base steel sheet to a position located at ? of a thickness of the base steel sheet, and diffusible hydrogen in steel in an amount of 0.20 mass ppm or less.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: July 23, 2024
    Assignee: JFE Steel Corporation
    Inventors: Takuya Hirashima, Yoshihiko Ono
  • Patent number: 12043884
    Abstract: A high-ductility, high-strength electrolytic zinc-based coated steel sheet includes an electrolytic zinc-based coating on a base steel sheet, in which the base steel sheet has a predetermined composition and a steel microstructure in which the total area percentage of one or two of martensite containing a carbide having an average particle size of 50 nm or less and bainite containing a carbide having an average particle size of 50 nm or less is 90% or more in the entire steel microstructure, the total area percentage of one or two of the martensite containing a carbide having an average particle size of 50 nm or less and the bainite containing a carbide having an average particle size of 50 nm or less is 80% or more in a region extending from the surface of the base steel sheet to a depth of ? of the thickness of the base steel sheet.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: July 23, 2024
    Assignee: JFE Steel Corporation
    Inventors: Takuya Hirashima, Shinjiro Kaneko
  • Patent number: 12031203
    Abstract: A galvannealed steel sheet according to one aspect of the present invention has a hot-dip galvannealed layer on at least one surface of the steel sheet, and the steel sheet has a predetermined chemical composition, in which the steel sheet contains 10% or more and 90% or less of ferrite, and 10% or more of tempered martensite and tempered bainite in terms of an area ratio, a sum of the ferrite, the tempered martensite, and the tempered bainite is 90% or more, carbides having a major axis of 50 nm or more and 300 nm or less are contained in grains of the ferrite in a number density of 20/?m2 or more, and a two-dimensional homogeneous dispersion ratio S of Mn is 0.75 or more and 1.30 or less.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: July 9, 2024
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Mai Nagano, Koutarou Hayashi, Akihiro Uenishi
  • Patent number: 12030140
    Abstract: A lead-free solder alloy includes bismuth (Bi), content of which is equal to or greater than 56 wt % and equal to or less than 57.5 wt %, indium (In), content of which is equal to or greater than 0.05 wt % and equal to or less than 1.0 wt %, and the balance of tin (Sn) and another unavoidable impurity. The lead-free solder alloy of the disclosure may enable bonding with improved ductility and thermal shock reliability while not having a large melting point change compared to an Sn-58Bi alloy.
    Type: Grant
    Filed: October 4, 2022
    Date of Patent: July 9, 2024
    Assignee: MK ELECTRON CO., LTD.
    Inventors: Young Woo Lee, Seul Gi Lee, Hui Joong Kim, Jae Yool Son, Jae Hun Song, Jeong Tak Moon
  • Patent number: 12024761
    Abstract: A component for contacting hydrogen, including at least one surface, which is provided for coming into contact with a hydrogen atmosphere, at least this surface being made from steel, wherein the steel has a microstructure which includes austenite and ferrite, an austenitic structure fraction being present in a range from greater than or equal to 1 wt. % to less than or equal to 50 wt. %, and a ferritic structure fraction being present in a range from greater than or equal to 50 wt. % to less than or equal to 99 wt.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: July 2, 2024
    Assignee: ROBERT BOSCH GMBH
    Inventor: Matthias Kuntz
  • Patent number: 12024754
    Abstract: A method for manufacturing a low-carbon nitrogen-containing austenitic stainless steel bar sequentially includes smelting, electroslag remelting, and forging. During electroslag remelting, the steel ingot obtained in the smelting process is used as an electrode bar of the electroslag furnace and is remelted with specific slag and crystallized. The specific slag comprises CaF2 (65-70%), Al2O3 (15-20%), CaO (5-10%) and MgO (2-5%) in percentage by weight. Specific forging methods, including upsetting-and-drawing and radial forging, are used. In upsetting-and-drawing, the pass deformation is less than 35%, the pass reduction is 50-80 mm, the pass heating temperature is 1130-1150° C., and the pass deformation method is ellipse-ellipse-circle. The method can obtain the low-carbon high-strength nitrogen-containing austenitic stainless steel with uniformly distributed chemical composition, high purity and high strength.
    Type: Grant
    Filed: December 8, 2022
    Date of Patent: July 2, 2024
    Assignee: DAYE SPECIAL STEEL CO., LTD.
    Inventors: Xiaoliang Dong, Xiuli Zhang, Lixin Zhou, Yinghua Lei, Xianhua Wang, Guangpeng Xu, Peng Xu, Guoyang Sun, Zaoyu Li, Jun Zhang, Dong Ruan
  • Patent number: 12024762
    Abstract: A non-oriented electrical steel sheet has a chemical composition in which ?-? transformation can occur and which contains at least, in terms of mass %, at most 0.010% of C, 1.50% to 4.00% of Si, 0.0001% to 1.0% of sol. Al, at most 0.010% of S, at most 0.010% of N, and a total of 2.50% to 5.00% of at least one selected from the group consisting of Mn, Ni, and Cu, with the balance including Fe and impurities, wherein when an average grain size of {411} crystal grains is defined as d411 and an average grain size of {111} crystal grains is defined as d111, d411/d111?1.10.
    Type: Grant
    Filed: March 31, 2022
    Date of Patent: July 2, 2024
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Minako Fukuchi, Yoshiaki Natori, Tesshu Murakawa
  • Patent number: 12017307
    Abstract: Provided is a flux for resin-cored solder that is used in resin-cored solder that is supplied into a through hole formed along a central axis of a soldering iron. The flux includes 60% by mass to 99.9% by mass of a rosin ester to a total mass of the flux, 0.1% by mass to 15% by mass of a covalent halogen compound to the total mass of the flux, and more than 0% by mass to 10% by mass of rosin amine, N,N-diethyloctylamine, or rosin amine and N,N-diethyloctylamine to the total mass of the flux.
    Type: Grant
    Filed: November 10, 2021
    Date of Patent: June 25, 2024
    Assignees: Senju Metal Industry Co., Ltd., DENSO CORPORATION
    Inventors: Yoko Kurasawa, Motohiro Onitsuka, Hisashi Tokutomi, Kei Endo, Kazuyuki Hamamoto
  • Patent number: 12018386
    Abstract: The disclosure describes a method that includes forming a soft magnetic material by a technique including melt spinning. The soft magnetic material includes at least one of: at least one of an ??-Fe16(NxZ1-x)2 phase domain or an ??-Fe8(NxZ1-x), where Z includes at least one of C, B, or O, and where x is a number greater than zero and less than one; or at least one of an ??-Fe16N2 phase domain or an ??-Fe8N phase domain, and at least one of an ??-Fe16Z2 phase domain or an ??-Fe8Z phase domain.
    Type: Grant
    Filed: October 9, 2020
    Date of Patent: June 25, 2024
    Assignee: Regents of the University of Minnesota
    Inventors: Jian-Ping Wang, Bin Ma, Guannan Guo
  • Patent number: 12011787
    Abstract: A flux used for soldering with a tin-silver-copper alloy comprises an imidazole compound and/or an imidazoline compound; a dicarboxylic acid having 3 or more and 36 or less carbons; and a quaternary ammonium iodine salt. Relative to the total amount of the flux, the dicarboxylic acid content is 6 mass % or more and 25 mass % or less, and the iodine content is 200 ppm or more and 3600 ppm or less.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: June 18, 2024
    Assignee: HARIMA CHEMICALS, INCORPORATED
    Inventors: Kazuki Ikeda, Syota Tanaka
  • Patent number: 12012651
    Abstract: A method for protecting a neodymium-iron-boron watch magnet against corrosion is provided. The method includes a sandblasting treatment of the watch magnet surface following by an ion implantation in an oxygen plasma or a nitrogen plasma to obtain an impervious surface layer with all of the surface bonds saturated by the implanted ions acting as a barrier against oxidation and preventing corrosion of the watch magnet in a humid environment, under the usual conditions for wearing watches.
    Type: Grant
    Filed: October 1, 2021
    Date of Patent: June 18, 2024
    Assignee: Comadur SA
    Inventors: Alexandra Amherd-Hidalgo, Alexis Boulmay, Pierry Vuille
  • Patent number: 12011759
    Abstract: An extrusion printing process for conductive materials and a conductive material extrusion system. The process includes attaching a counter-electrode to a first side of a substrate. A drive voltage is applied to the counter-electrode and to a conductive material to be extruded onto a second side of the substrate, opposite the first side. The conductive material is extruded onto the second side of the substrate while the drive voltage is being applied to the counter-electrode and conductive material. The conductive material is selected from a metal having a melting point ranging from about ?20° C. to about 150° C.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: June 18, 2024
    Assignee: United States of America as represented by the Secretary of the Air Force
    Inventors: Christopher E Tabor, Alexander M Watson, Alexander B Cook
  • Patent number: 12006562
    Abstract: Provided are a hot dip galvanized steel sheet comprising a base steel sheet wherein the base steel sheet has a predetermined composition and contains ferrite: 0% to 50%, retained austenite: 0% to 30%, tempered martensite: 5% or more, fresh martensite: 0% to 10%, and pearlite and cementite in total: 0% to 5%, remaining structures consist of bainite, when defining a region having a hardness of 90% or less of the hardness at a position of ¼ thickness to the base steel sheet side from an interface of the base steel sheet and a hot dip galvanized layer as a “soft layer”, there is a soft layer having a thickness of 10 ?m or more at the base steel sheet side from the interface, the soft layer contains tempered martensite, and an increase rate in a thickness direction of an area % of tempered martensite from the interface to the inside of the base steel sheet inside the soft layer is 5.0%/?m or less, and a method for producing the same.
    Type: Grant
    Filed: February 6, 2020
    Date of Patent: June 11, 2024
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Takafumi Yokoyama, Hiroyuki Kawata, Kunio Hayashi, Yuji Yamaguchi, Satoshi Uchida
  • Patent number: 11998985
    Abstract: An assembly for densification under load along at least one direction of compression. The assembly includes: at least one volume to be densified having a powdery and/or porous composition and having variations in thickness along the direction of compression; and at least one counter-form of a powdery and/or porous composition, having at least one face facing at least one portion of the volume. The face and each of the portions are separated by at least one deformable interface layer.
    Type: Grant
    Filed: May 13, 2022
    Date of Patent: June 4, 2024
    Assignees: Universite Toulouse III—Paul Sabatier, Centre National De La Recherche Scientifique
    Inventors: Claude Estournes, Charles Maniere, Lise Durand
  • Patent number: 12000018
    Abstract: Provided is a method for separating copper from nickel and cobalt with which it is possible to selectively and efficiently separate copper, as well as nickel and cobalt, from an alloy including copper, nickel, and cobalt such as an alloy having high corrosion resistance that includes copper, nickel, and cobalt obtained by dry treatment of waste lithium ion cells. An alloy including copper, nickel, and cobalt is brought into contact with sulfuric acid in the joint presence of a sulfurizing agent, and a solid containing copper and a leachate containing nickel and cobalt are obtained.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: June 4, 2024
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Tatsuya Higaki, Hiroshi Takenouchi, Hiroshi Kobayashi, Satoshi Asano
  • Patent number: 11970756
    Abstract: The invention relates to an aluminum alloy having 0.04-0.1 wgt.-% Si, 0.8-1.8 wgt.-% Cu, 1.5-2.3 wgt.-% Mg, 0.15-0.6 wgt.-% Ag, 7.05-9.2 wgt.-% Zn, 0.08-0.14 wgt.-% Zr, 0.02-0.08 wgt.-% Ti, max. 0.35 wgt.-% Mn, max. 0.1 wgt.-% Fe, max. 0.06 wgt.-% Cr, optional 0.0015-0.008 wgt.-% Be, the remainder aluminum in addition to unavoidable impurities. The invention furthermore relates to an aluminum alloy product which is overaged according to T74xx, produced from such an alloy.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: April 30, 2024
    Assignee: OTTO FUCHS KOMMANDITGESELLSCHAFT
    Inventors: Joachim Becker, Matthias Hilpert, Thomas Witulski, Michael Besel
  • Patent number: 11970758
    Abstract: This hot-rolled steel sheet has a predetermined chemical composition. The metallographic structure at a sheet thickness ¼ depth from a surface and at a center position in a sheet width direction in a sheet width cross section parallel to a rolling direction contains, by area %, 77.0% to 97.0% of bainite and tempered martensite in total, 0% to 5.0% of ferrite, 0% to 5.0% of pearlite, 3.0% or more of residual austenite, and 0% to 10.0% of martensite. The average grain size of the metallographic structure excluding the residual austenite is 7.0 ?m or less. The C concentration in the residual austenite is 0.5 mass % or more. The number density of iron-based carbides having a diameter of 20 nm or more is 1.0×106 carbides/mm2 or more.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: April 30, 2024
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Hiroshi Shuto, Akifumi Sakakibara, Shinsuke Kai, Koutarou Hayashi, Hiroshi Kaido
  • Patent number: 11959151
    Abstract: Provided is a method for separating copper from nickel and cobalt, which is capable of efficiently and selectively separating copper, and nickel and cobalt from an alloy containing copper, nickel and cobalt such as a highly anticorrosive alloy that is obtained by subjecting a waste lithium ion battery to a dry treatment and contains copper, nickel and cobalt. According to the present invention, an alloy containing copper, nickel and cobalt is brought into contact with an acid in the coexistence of a sulfurization agent, thereby obtaining a solid that contains copper and a leachate that contains nickel and cobalt.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: April 16, 2024
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Tatsuya Higaki, Hiroshi Takenouchi, Hiroshi Kobayashi, Satoshi Asano
  • Patent number: 11939641
    Abstract: A grain oriented electrical steel sheet includes the texture aligned with Goss orientation. In the grain oriented electrical steel sheet, when (?1 ?1 ?1) and (?2 ?2 ?2) represent deviation angles of crystal orientations measured at two measurement points which are adjacent on the sheet surface and which have an interval of 1 mm, the boundary condition BA is defined as [(?2??1)2+(?2??1)2+(?2??1)2]1/2?0.5°, and the boundary condition BB is defined as [(?2??1)2+(?2??1)2+(?2??1)2]1/2?2.0°, the boundary which satisfies the boundary condition BA and which does not satisfy the boundary condition BB is included.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: March 26, 2024
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Shuichi Nakamura, Yusuke Kawamura, Shota Morimoto