Patents Examined by Jophy S Koshy
  • Grain-oriented electrical steel sheet and method for producing grain-oriented electrical steel sheet
    Patent number: 11562840
    Abstract: A grain-oriented electrical steel sheet includes: a base steel sheet having a predetermined chemical composition; a glass coating provided on the surface of the base steel sheet; and a tension-applying insulation coating provided on the surface of the glass coating, in which linear thermal strains having, a predetermined angle (?) with respect to a transverse direction which is a direction orthogonal to a rolling direction are periodically formed on the surface of the tension-applying insulation coating at predetermined intervals along the rolling direction, a full width at half maximum F1 on the linear thermal strain and a full width at half maximum F2 at an intermediate position between the two linear thermal strains adjacent to each other satisfy 0.00<(F1?F2)/F2?0.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: January 24, 2023
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Takashi Kataoka, Ichiro Tanaka, Haruhiko Atsumi, Kazutoshi Takeda, Hirotoshi Tada
  • Gold sputtering target and method for producing the same
    Patent number: 11560620
    Abstract: A gold sputtering target has a gold purity of 99.999% or more. In such a gold sputtering target, an average value of Vickers hardness is 20 or more and less than 40, an average crystal grain size is 15 ?m or more and 200 ?m or less, and a {110} plane of gold is preferentially oriented to a surface to be sputtered of the gold sputtering target.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: January 24, 2023
    Assignee: TANAKA KIKINZOKU KOGYO K. K.
    Inventors: Tetsuya Kato, Takashi Terui, Masahiro Takahashi
  • Duplex stainless steel
    Patent number: 11555231
    Abstract: The invention relates a duplex ferritic austenitic stainless steel having high formability utilizing the TRIP effect and high corrosion resistance with the balanced pitting resistance equivalent. The duplex stainless steel contains less than 0.04 weight % carbon, less than 0.7 weight % silicon, less than 2.5 weight % manganese, 18.5-22.5 weight % chromium, 0.8-4.5 weight % nickel, 0.6-1.4 weight % molybdenum, less than 1 weight % copper, 0.10-0.24 weight % nitrogen, the rest being iron and inevitable impurities occurring in stainless steels.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: January 17, 2023
    Assignee: OUTOKUMPU OYJ
    Inventors: James Oliver, Jan Y. Jonsson, Alexander Thulin
  • Producing method for gold sputtering target and producing method for gold film
    Patent number: 11555238
    Abstract: A production method for a gold sputtering target includes: producing a gold sputtering target which is made of gold and inevitable impurities and in which an average value of Vickers hardness is 40 or more and 60 or less, an average value of crystal grain size is 15 ?m or more and 200 ?m or less, and the {110} plane of gold is preferentially oriented to a surface to be sputtered of the gold sputtering target.
    Type: Grant
    Filed: June 5, 2020
    Date of Patent: January 17, 2023
    Assignee: TANAKA KIKINZOKU KOGYO K. K.
    Inventors: Tetsuya Kato, Yohei Mizuno, Chiharu Ishikura
  • Composite iron pellets and methods of making same
    Patent number: 11530464
    Abstract: Disclosed herein are methods and compositions for producing composite pellets comprising a core comprising: iron ore and a carbonaceous reducing agent; and a shell comprising: iron ore; and having a core and shell transition in a manner such that no visible boundary exists between the core and the shell in a cross-section of the pellet. The methods can be used to produce composite pellets with improved productivity and quality, and the resulting composite pellets can be used to produce direct reduced iron (DRI).
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: December 20, 2022
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Mohamed Bahgat Saddik, Hesham Ahmed Hanafy
  • Thermal energy storage devices, systems, and methods
    Patent number: 11525642
    Abstract: Methods, systems, and device for thermal energy storage are provided. For example, some embodiments include a thermal energy storage device that may include: a first casing wall; a second casing wall; and/or multiple support structures located between the first casing wall and the second casing wall. The multiple support structures may provide continuous thermal paths and/or continuous mechanical paths between the first casing wall and the second casing wall. The thermal energy storage device may be fabricated utilizing an additive manufacturing technique, such as direct laser metal sintering. Some embodiments may be manufactured utilizing printed metals, such as an aluminum alloy. In some embodiments, a phase-change material is charged between the first casing wall and the second casing wall. The phase-change material may include paraffin.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: December 13, 2022
    Assignee: Roccor, LLC
    Inventors: Steven Isaacs, Greg Shoukas, Diego Arias
  • Non-oriented electrical steel sheet and method for producing same, and motor core and method for producing same
    Patent number: 11525169
    Abstract: A non-oriented electrical steel sheet with an average magnetostriction ?p-p at 400 Hz and 1.0 T of not more than 4.5×10?6, and area ratio of recrystallized grains at a section in rolling direction of steel sheet of 40 to 95% and an average grain size of 10 to 40 ?m is obtained by subjecting a steel slab containing, in mass %, C: not more than 0.005%, Si: 2.8 to 6.5%, Mn: 0.05 to 2.0%, Al: not more than 3.0%, P: not more than 0.20%, S: not more than 0.005%, N: not more than 0.005%, Ti: not more than 0.003%, V: not more than 0.005% and Nb: not more than 0.005% and satisfying Si—2Al—Mn?0 to hot rolling, hot-band annealing, cold rolling and finish annealing under adequate cold rolling and finish annealing conditions, and a motor core is manufactured by such a steel sheet.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: December 13, 2022
    Assignee: JFE STEEL CORPORATION
    Inventors: Yoshiaki Zaizen, Tomoyuki Okubo, Yoshihiko Oda, Yukino Miyamoto
  • High-strength steel having excellent low-yield-ratio characteristics, and manufacturing method therefor
    Patent number: 11519045
    Abstract: A high-strength steel having excellent low-yield-ratio characteristics, according to one embodiment of the present invention, comprises, by wt %, 0.06-0.12% of C, 0.2-0.5% of Si, 1.5-2.0% of Mn, 0.003-0.05% of Al, 0.01% or less of N, 0.02% or less of P, 0.003% or less of S, 0.05-0.5% of Cr, 0.05-0.5% of Mo, 0.01-0.05% of Nb, 0.0005-0.005% of Ca and the balance of Fe and other inevitable impurities, and comprises polygonal ferrite as a microstructure, wherein the area fraction of the polygonal ferrite is 10-30% and the average hardness of the polygonal ferrite can be 180 Hv or less.
    Type: Grant
    Filed: December 24, 2018
    Date of Patent: December 6, 2022
    Assignee: POSCO
    Inventor: Hwan-Gyo Jung
  • Duplex stainless steel and manufacturing method thereof
    Patent number: 11512374
    Abstract: A duplex stainless steel and method of manufacturing the same, said steel having an amount of Cr in an extraction residue [Cr] of 0.005 to 0.050% and an amount of Nb in an extraction residue [Nb] of 0.001 to 0.080%, the [Nb]/[Cr] ratio being 0.2 or more. By slow cooling down to 800° C., then fast cooling down to 600° C., it is possible to control the precipitation of chromium nitrides and niobium nitrides, and by making the ratio [Nb]/[Cr] 0.2 or more, it is possible to raise the corrosion resistance. Further, by reducing Mn to less than 2.0% and N to 0.25% or less, then adding a trace amount of Nb, the effect of raising the critical pitting temperature CPT is obtained.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: November 29, 2022
    Assignee: NIPPON STEEL STAINLESS STEEL CORPORATION
    Inventors: Shinji Tsuge, Yuusuke Oikawa
  • Device and method for manufacturing multilayer molded article
    Patent number: 11498127
    Abstract: A die having a cavity and a lower punch fitted into the cavity. The cavity is divided and the parts slide along a division plane passing through the cavity parallel to the fitting direction of the die and the lower punch. The divided cavity parts are placed in a state of alignment along the division plane. The divided cavity parts are each filled with raw material powder. The die and the lower punch are then slid along the division plane, whereby the divided cavity parts are combined as the original cavity. The raw material powder in the cavity in a combined state is compressed by an upper punch and the lower punch.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: November 15, 2022
    Assignee: DIAMET CORPORATION
    Inventors: Tsuneo Maruyama, Shinichi Takezoe, Hideo Sakai
  • High-strength steel sheet and method for producing the same
    Patent number: 11492677
    Abstract: A high-strength steel sheet has a specific composition and a microstructure. In the microstructure, the area fraction of elongated ferrite phase grains having an aspect ratio of 3 or more is 1% or less, the average crystal grain size of martensite included in a region extending 50 ?m from a surface of the steel sheet is 20 ?m or less, the content of oxide particles having a minor axis length of 0.8 ?m or less in the region extending 50 ?m from the surface of the steel sheet is 1.0×1010 particles/m2 or more, and the content of coarse oxide particles having a minor axis length of more than 1 ?m in the region extending 50 ?m from the surface of the steel sheet is 1.0×108 particles/m2 or less. The content of hydrogen trapped in the steel sheet is 0.05 ppm by mass or more.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: November 8, 2022
    Assignee: JFE Steel Corporation
    Inventors: Hiroshi Hasegawa, Hidekazu Minami, Tatsuya Nakagaito, Kana Sasaki, Shoji Tanaka
  • Soft magnetic alloy
    Patent number: 11482355
    Abstract: The present invention relates to a soft magnetic alloy containing: Ni, and at least one element selected from the group consisting of Al, Si and V, with the balance being Fe and inevitable impurities, in which, when the content of Ni and the total content of Al, Si and V are expressed by [Ni] and [M], respectively in mass %, and a relationship between [Ni] and [M] is plotted, the coordinate ([Ni], [M]) is present in a region surrounded by the straight lines A, B, C, D, and E.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: October 25, 2022
    Assignee: DAIDO STEEL CO., LTD.
    Inventors: Akihiko Saito, Takeshi Takano, Yu Nakama
  • Metal gasket and production method therefor
    Patent number: 11471929
    Abstract: Provided is a metal gasket including, expressed in mass %, C: 0.10% or less, Si: 1.0% or less, Mn: 2.0% or less, P: 0.04% or less (including 0%), S: 0.01% or less (including 0%), Ni: 25.0-60.0%, Cr: 10.0-20.0%, either Mo or W alone, or both Mo+W/2:0.05-5.0%, Al: more than 0.8% to 3.0% or less, Ti: 1.5-4.0%, Nb: 0.05-2.5%, V: 1.0% or less (including 0%), B: 0.001-0.015%, Mg: 0.0005-0.01%, S/Mg: 1.0 or less, N: 0.01% or less (including 0%), and O: 0.005%) or less (including 0%), with the remainder being Fe and unavoidable impurities. The metal gasket has a metal structure in which a precipitate ?? phase having an average equivalent circle diameter of 25 nm or larger is not present within the austenite base.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: October 18, 2022
    Assignee: HITACHI METALS, LTD.
    Inventors: Toshihiro Uehara, Junichi Nishida
  • Spheroidal graphite cast iron
    Patent number: 11466349
    Abstract: A spheroidal graphite cast iron having an excellent impact strength at low temperature and a method for producing the same are provided. The present disclosure relates to the spheroidal graphite cast iron comprising: C: 3.5 mass % to 4.2 mass %; Si: 2.0 mass % to 2.8 mass %; Mn: 0.2 mass % to 0.4 mass %; Cu: 0.1 mass % to 0.7 mass %; Mg: 0.02 mass % to 0.06 mass %; Cr: 0.01 mass % to 0.15 mass %; and the balance: Fe and inevitable impurities, wherein Mn+Cr+Cu is 0.431 mass % to 1.090 mass %, a graphite nodule count is 230/mm2 or less, and a pearlite fraction is 30% to 85%.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: October 11, 2022
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN TAKAOKA CO., LTD.
    Inventors: Takumi Hijii, Yoshimasa Ureshino, Hitoshi Sakuma, Gou Nakamura, Zhong-zhi Zhang
  • Non-oriented electrical steel sheet and method for manufacturing non-oriented electrical steel sheet
    Patent number: 11469018
    Abstract: A non-oriented electrical steel sheet according to one embodiment of the invention has a chemical composition represented by C: 0.0030% or less, Si: 2.00% or less, Al: 1.00% or less, Mn: 0.10% to 2.00%, S: 0.0030% or less, one or more selected from the group consisting of Mg, Ca, Sr, Ba, Nd, Pr, La, Ce, Zn, and Cd: greater than 0.0100% and not greater than 0.0250% in total, a parameter Q represented by Q=[Si]+2×[Al]?[Mn]: 2.00 or less; Sn: 0.00% to 0.40%, Cu: 0.00% to 1.00%, and a remainder: Fe and impurities, and a parameter R represented by R=(I100+I310+I411+I521)/(I111+I211+I332+I221) is 0.80 or greater.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: October 11, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Takeshi Kubota, Takeaki Wakisaka, Masafumi Miyazaki, Takashi Morohoshi
  • Railway wheel
    Patent number: 11458762
    Abstract: A railway wheel is capable of suppressing formation of pro-eutectoid cementite even if the C content is high. The railway wheel has a chemical composition consisting of: in mass %, C: 0.80 to 1.15%; Si: 0.45% or less; Mn: 0.10 to 0.85%; P: 0.050% or less; S: 0.030% or less; Al: 0.120 to 0.650%; N: 0.0030 to 0.0200%; Cr: 0 to 0.25%; and V: 0 to 0.12%, with the balance being Fe and impurities, wherein an amount of pro-eutectoid cementite, which is defined by Formula (1), in a microstructure of the railway wheel is not more than 1.50 pieces/100 ?m: Amount of pro-eutectoid cementite (pieces/100=a total sum of the number of pieces of pro-eutectoid cementite which intersect with two diagonal lines in a square visual field of 200 ?m×200 ?m/(5.66×100 ?m) (1).
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: October 4, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Taketo Maejima, Manabu Kubota
  • Non-oriented electrical steel sheet and method for manufacturing non-oriented electrical steel sheet
    Patent number: 11459632
    Abstract: A non-oriented electrical steel sheet according to one embodiment of the invention has a chemical composition represented by C: 0.0030% or less, Si: 2.00% or less, Al: 1.00% or less, Mn: 0.10% to 2.00%, S: 0.0030% or less, one or more selected from the group consisting of Mg, Ca, Sr, Ba, Nd, Pr, La, Ce, Zn, and Cd: 0.0015% to 0.0100% in total, a parameter Q represented by Q=[Si]+2×[Al]?[Mn]: 2.00 or less; Sn: 0.00% to 0.40%, Cu: 0.00% to 1.00%, and a remainder: Fe and impurities, and a parameter R represented by R=(I100+I310+I411+I521)/(I111+I211+I332+I221) is 0.80 or greater.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: October 4, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Takeshi Kubota, Takeaki Wakisaka, Takashi Morohoshi, Masafumi Miyazaki
  • Non-heat treated steel for induction hardening
    Patent number: 11447849
    Abstract: A non-heat treated steel for induction hardening contains, in mass %, C: 0.35 to 0.44%, Si: 0.01 to less than 0.30%, Mn: 0.80 to 1.50%, P: 0.030% or less, S: more than 0.010 to 0.095%, Cr: more than 0.10 to 0.30%, V: 0.050 to 0.200%, N: 0.0040 to 0.0200%, O: 0.0024% or less, Cu: 0.05% or less and Ni: 0.05% or less, and for which fn1?50.0, fn2: 0.70 to 1.00, and fn3?1.30. In the steel, a ratio of a number of Mn oxides containing oxygen in an amount of 20.0 mass % or more and Mn in an amount of 10.0 mass % or more to the number of oxides is 10.0% or less fn1=80C2+55C+13Si+4.8Mn+30P+30S+1.5Cr fn2=C+(Si/10)+(Mn/5)?(5S/7)+(5Cr/22)+1.65V fn3=?2C—Si+2.33Mn+0.26Cr+V?1.5Cu?1.5Ni.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: September 20, 2022
    Assignee: Nippon Steel Corporation
    Inventors: Makoto Egashira, Shigefumi Nishitani
  • Resettable alloys and manufacturing method for the same
    Patent number: 11447843
    Abstract: A resettable alloy having a resetting mechanism introduced thereinto through simple resetting treatment, thereby prolonging the lifespan of materials, and a manufacturing method for the same are provided. The resettable alloy comprises a body-centered tetragonal(BCT)-face-centered cubic(FCC) dual structure comprising: BCT martensite phase matrix; and FCC austenite phase present within the matrix, wherein the FCC phase is formed by selective segregation of component elements and can be repetitively reset through metastable reversible phase transformation.
    Type: Grant
    Filed: August 18, 2020
    Date of Patent: September 20, 2022
    Assignee: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Eun Soo Park, Kook Noh Yoon, Min Seok Kim, Sang Jun Kim, Jeong Won Yeh
  • Flux composition for brazing aluminum and method for brazing aluminum using the same
    Patent number: 11440143
    Abstract: Disclosed are a composition for brazing aluminum, and a method for brazing aluminum using the same. The composition for brazing aluminum may have excellent adhesion or bonding strength and improved corrosion resistance, for example, after bonding. The composition for brazing aluminum may include an amount of about 30 to 60 parts by weight of a zinc-based compound, and an amount of about 10 to 40 parts by weight of a metal titanium. For example, by using the composition for brazing aluminum in, base metals may be bonded by applying and heat treating the flux without addition of separate filler metal, thereby simplifying a bonding process and reducing a bonding time.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: September 13, 2022
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Chang Yeol Yoo