Patents Examined by Jophy S Koshy
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Patent number: 11732319Abstract: Proposed is a non-oriented electrical steel sheet being low in iron loss and excellent in tensile strength and fatigue strength, which has a chemical composition comprising C: not more than 0.005 mass %, Si: 3 to 5 mass %, Mn: not more than 5 mass %, P: not more than 0.1 mass %, S: not more than 0.01 mass %, Al: not more than 3 mass %, N: not more than 0.005 mass %, Zn: 0.0005 mass % to 0.003 mass %, and the remainder being Fe and inevitable impurities, an average crystal grain size being not more than 40 ?m, the number of the inclusions having a diameter of not less than 5 ?m being not more than 5/mm2, a tensile strength being not less than 600 MPa, and the fatigue strength being not less than 450 MPa.Type: GrantFiled: December 10, 2019Date of Patent: August 22, 2023Assignee: JFE Steel CorporationInventors: Yoshihiko Oda, Yoshiaki Zaizen, Tomoyuki Okubo, Takaaki Tanaka, Yukino Miyamoto
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Patent number: 11718891Abstract: 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: GrantFiled: October 31, 2022Date of Patent: August 8, 2023Assignee: JFE STEEL CORPORATIONInventors: Yoshiaki Zaizen, Tomoyuki Okubo, Yoshihiko Oda, Yukino Miyamoto
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Patent number: 11718894Abstract: Provided is a method for separating copper from nickel and cobalt, which can efficiently and selectively separate copper from nickel and cobalt in a substance containing copper, nickel, and cobalt in a waste lithium ion battery, etc. In this method, a substance containing copper, nickel, and cobalt is sulfurated to obtain a sulfide, the obtained sulfide that contains copper, nickel, and cobalt is brought into contact with an acid solution to obtain a solid containing copper and a leachate containing nickel and cobalt. The sulfide preferably contains copper sulfide as a main component, and contains nickel metal and cobalt metal. In-addition, when bringing the sulfide into contact with the acid solution, the added amounts of the sulfide and the acid solution are preferably adjusted such that the oxidation-reduction potential of the obtained leachate is maintained at 150 mV or less where a silver/silver chloride electrode is a reference electrode.Type: GrantFiled: November 28, 2018Date of Patent: August 8, 2023Assignee: SUMITOMO METAL MINING CO., LTD.Inventors: Hiroshi Takenouchi, Hiroshi Kobayashi, Hirofumi Shoji, Tatsuya Higaki
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Patent number: 11718893Abstract: A method for recovery of gold from gold-containing materials, such as electronic waste material, minerals and sands is described. The method includes crushing the gold containing material to obtain a particulate material. The particulate material is then preheated in an oxygen-containing gas environment in a preheating zone. The method also includes mixing the oxidized particulate material with a chlorine-containing material and treating the mixture in a reaction zone. The treatment is carried out by heating the mixture to provide thermal decomposition of the chlorine-containing material and produce a chlorine-containing gas mixture, and by applying an electromagnetic field to the chlorine-containing gas mixture to provide ionization of chlorine. A volatile gold-containing chloride product, produced in the reaction zone as a result of a chemical reaction between gold and chlorine ions, is then cooled to convert the volatile gold-containing chloride product into solid phase gold-containing materials.Type: GrantFiled: November 1, 2018Date of Patent: August 8, 2023Assignee: YEDA RESEARCH AND DEVELOPMENT CO. LTD.Inventors: Igor Lubomirsky, Valery Kaplan, Nurlan Dosmukhamedov, Erzhan Zholdasbay
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Patent number: 11721460Abstract: A method for preparing a metal powder includes preparing a mixture by mixing a fluoride of a group 1 element, a fluoride of a group 2 element or a transition metal fluoride, with neodymium oxide, boron, iron, and a reducing agent; and heating the mixture at a temperature of 800° C. to 1100° C.Type: GrantFiled: October 18, 2017Date of Patent: August 8, 2023Inventors: June Ho In, Soon Jae Kwon, Ik Jin Choi, Hyoun Soo Uh, Jung Won Park, Byung Kyu Lim, Pum Suk Park
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Patent number: 11713497Abstract: A steel member according to an aspect of the present invention has a predetermined chemical composition, in which a metallographic structure includes, by a volume %, 60.0% to 85.0% of martensite, 10.0% to 30.0% of bainite, 5.0% to 15.0% of residual austenite, and 0% to 4.0% of a remainder in microstructure. A length of a maximum minor axis of the residual austenite is 30 nm or longer. A number density of a carbide which exist in the steel member and has a circle equivalent diameter of 0.1 ?m or more and an aspect ratio of 2.5 or less is 4.0×103 pieces/mm2 or less.Type: GrantFiled: April 23, 2019Date of Patent: August 1, 2023Assignee: NIPPON STEEL CORPORATIONInventors: Shinichiro Tabata, Yoshihiro Suwa, Kazuo Hikida, Kazuhisa Kusumi
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Patent number: 11707784Abstract: Bearing steel comprising cubic boron nitride (c-BN) and/or nickel coated cBN spark plasma sintered at a temperature in the range of 850-1050° C. is disclosed. The tribological and corrosion resistance of the bearing steel improved with increasing the amount of c-BN. Further improvement in the properties was achieved with the incorporation of nickel coated c-BN, which caused a phase transition of the bearing steel from magnetic to non-magnetic phase accompanied by interdiffusion enhancement between the matrix and c-BN reinforcement.Type: GrantFiled: October 15, 2019Date of Patent: July 25, 2023Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: Abbas Saeed Hakeem, Akeem Yusuf Adesina, Muhammad Umar Azam, Bilal Anjum Ahmed, Ahmad A. Sorour
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Patent number: 11702716Abstract: A case hardening steel having excellent fatigue resistance is provided at relatively low production cost. A case hardening steel has a chemical composition containing C: 0.10% to 0.30%, Si: 0.10% to 1.20%, Mn: 0.30% to 1.50%, S: 0.010% to 0.030%, Cr: 0.10% to 1.00%, B: 0.0005% to 0.0050%, Sb: 0.005% to 0.020%, and N: 0.0150% or less in a predetermined range, and further containing Al: 0.010%?Al?0.120% in the case where B?(10.8/14)N?0.0003%, and 27/14[N?(14/10.8)B+0.030]?Al?0.120% in the case where B?(10.8/14)N<0.0003%.Type: GrantFiled: January 25, 2016Date of Patent: July 18, 2023Assignee: JFE STEEL CORPORATIONInventors: Keisuke Ando, Kazuaki Fukuoka, Kunikazu Tomita
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Patent number: 11701696Abstract: A method for open-loop and/or closed-loop control of a heating of a cast or rolled metal product, includes the steps of determining the total enthalpy of the metal product from a sum of the free molar enthalpies (Gibbs energy) of all phases and/or phase fractions currently present in the metal product; determining a temperature distribution within the metal product by means of a dynamic temperature calculation model using the total enthalpy determined; and open-loop and/or closed-loop controlling of the heating of the metal product as a function of at least one output variable of the temperature calculation model.Type: GrantFiled: March 10, 2022Date of Patent: July 18, 2023Assignee: SMS GROUP GMBHInventors: Thomas Heimann, Heinz-Juergen Oudehinken, Christoph Hassel
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Patent number: 11703481Abstract: A method for checking a component to be produced in an additive manner, having the steps of mechanically exciting at least one additively constructed layer of the component during the additive production of the component, measuring a mechanical response signal of the component, and displaying a warning and/or interrupting the additive production of the component if the mechanical response signal lies outside of a specified tolerance range. A device for the additive production of a component, includes a device for mechanically exciting the at least one additively constructed layer of the component, a measuring unit for measuring the mechanical response signal of the component, and a control unit. The control unit is designed to display the warning and/or interrupt the additive production if the mechanical response signal lies outside of a specified tolerance range.Type: GrantFiled: December 5, 2016Date of Patent: July 18, 2023Assignee: SIEMENS ENERGY GLOBAL GMBH & CO.Inventors: Christoph Haberland, Matthias Jungbluth, Andreas Kreutzer, Heiko Lammers, Thomas Lorenz, Martin Regener, Kathrin Sperlich, Danny Tomuschat
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Patent number: 11696754Abstract: A method of making a suture needle having a bendable region includes obtaining a suture needle made of a martensitic alloy having an austenitic transition temperature. The suture needle has a proximal section, a distal section with a sharpened tip, and a bendable region located between the proximal and distal sections. The method includes heating the suture needle to a first temperature that is greater than the austenitic transition temperature of the martensitic alloy and quenching the suture needle to room temperature to harden the martensitic alloy, After heating and quenching, the bendable region of the suture needle is heated locally to a second temperature that is above 800 degrees Celsius, but below the austenitic transition temperature of the martensitic alloy so that the bendable region is softened and made more flexible relative to the proximal and distal sections of the suture needle.Type: GrantFiled: February 22, 2019Date of Patent: July 11, 2023Assignee: Ethicon, Inc.Inventor: Frank Richard Cichocki, Jr.
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Patent number: 11697856Abstract: A grain-oriented electrical steel sheet according to the present invention includes a base steel sheet having plural grooves on a surface and a glass film formed on the surface of the base steel sheet.Type: GrantFiled: February 6, 2019Date of Patent: July 11, 2023Assignee: NIPPON STEEL CORPORATIONInventors: Fumiaki Takahashi, Hideyuki Hamamura, Satoshi Arai
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Patent number: 11692242Abstract: A method for producing a biodegradable magnesium metal composite that includes a polycrystalline magnesium matrix and TiB2 grains which are homogenously distributed in the polycrystalline magnesium matrix involving spark plasma sintering a milled mixture of magnesium powder and TiB2 powder. The temperature, pressure, and time of the spark plasma sintering used in the method are used to give high microharness, macrohardness, and density with low porosity by limiting the grain growth in the composite. The method yields a biodegradable magnesium metal composite having an improved microhardness, macrohardness, density, and porosity compared to other composites and methods of making composites.Type: GrantFiled: November 4, 2019Date of Patent: July 4, 2023Assignee: King Fahd University of Petroleum and MineralsInventors: Mohamed Abdrabou Hussein, Murad Ali, Nasser Al-Aqeeli
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Patent number: 11692253Abstract: A duplex ferritic austenitic stainless steel having high formability utilizing the TRIP effect and high corrosion resistance with the balanced pitting resistance equivalent is formed with less than 0.04 weight % carbon, 0.2-0.8 weight % silicon, less than 2.0 weight % manganese, 16.5-19.5 weight % chromium, 3.0-4.7 weight % nickel, 1.5-4.0 weight % molybdenum, less than 3.5 weight % tungsten, less than 1 weight % copper, 0.13-0.26 weight % nitrogen, the rest being iron and inevitable impurities occurring in stainless steels.Type: GrantFiled: February 2, 2015Date of Patent: July 4, 2023Assignee: Outokumpu OyjInventors: James Oliver, Jan Y. Jonsson
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Patent number: 11679439Abstract: A method may comprise: placing a probe in a molten metal melt comprising a thixotropic metal alloy; injecting a gas into the molten metal melt to form a saturated slurry, the saturated slurry being at a temperature above a liquidus temperature of the thixotropic metal alloy after injecting the gas; removing the probe from the molten metal melt; and depositing the molten metal melt through an extruder of an additive manufacturing system.Type: GrantFiled: August 6, 2021Date of Patent: June 20, 2023Assignee: Goodrich CorporationInventors: Sergey Mironets, Thomas J. Martin, Alexander Staroselsky
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Patent number: 11667986Abstract: Ferritic stainless steel is characterized by including, by mass %: Cr: 12.0% to 16.0%; C: 0.020% or less; Si: 2.50% or less; Mn: 1.00% or less; P: 0.050% or less; S: 0.0030% or less; Al: 2.50% or less; N: 0.030% or less; Nb: 0.001% to 1.00%; one or more of B: 0.0200% or less, Sn: 0.20% or less, Ga: 0.0200% or less, Mg: 0.0200% or less, and Ca: 0.0100% or less; and a balance consisting of Fe and impurities, in which Expression (1) is satisfied. 10(B+Ga)+Sn+Mg+Ca>0.Type: GrantFiled: March 26, 2019Date of Patent: June 6, 2023Assignee: NIPPON STEEL STAINLESS STEEL CORPORATIONInventors: Masaharu Hatano, Mitsuki Sugeoi, Takumi Nishimoto
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Patent number: 11666966Abstract: A powder molding press method of a green compact for a cutting insert including: filling a molding space with raw material powder in a state where a lower punch is inserted from below into a hole portion of a die; performing preliminary molding by inserting an upper punch for preliminary molding including a preliminary molding surface having a shape different from a shape obtained by inverting the upper surface of the green compact for a cutting insert in a plane symmetry into the molding space from above such that a thick portion between the upper and lower surfaces in the direction of the insert center line is filled with more raw material powder than a thin portion therebetween, relative to a state before the step of performing the preliminary molding; and inserting an upper punch for final molding into the molding space from above to powder-molding-press the raw material powder.Type: GrantFiled: May 29, 2018Date of Patent: June 6, 2023Assignee: MITSUBISHI MATERIALS CORPORATIONInventors: Kentaro Ohno, Masaru Hotta, Tomotsugu Gouda, Yoshitomo Shibuya
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Patent number: 11660708Abstract: A TIG welding flux for dissimilar steels is used to solve the problem that the conventional friction stir welding procedure for butt-joint welding a stainless steel workpiece and a carbon steel workpiece cannot be used on site, as well as the problem that the increased operating time and manufacturing cost due to forming bevel faces on both the stainless steel workpiece and the carbon steel workpiece. The TIG welding flux for dissimilar steels includes 25-35 wt % of silicon dioxide (SiO2), 20-30 wt % of cobalt (II, III) oxide (Co3O4), 15-20 wt % of manganese (II, III) oxide (Mn3O4), 10-15 wt % of nickel (III) oxide (Ni2O3), 7-12 wt % of molybdenum trioxide (MoO3), 6-11 wt % of manganese (II) carbonate (MnCO3), 5-10 wt % of nickel (II) carbonate (NiCO3), and 2-4 wt % of aluminum fluoride (AlF3).Type: GrantFiled: July 22, 2021Date of Patent: May 30, 2023Assignee: NATIONAL PINGTUNG UNIVERSITY OF SCIENCE & TECHNOLOGYInventor: Kuang-Hung Tseng
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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
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Patent number: 11655528Abstract: Described is a hot-rolled steel having a tensile strength of at least 950 MPa and a microstructure that includes bainite at an area ratio of 70% or more; the balance being: martensite at an area ratio of 30% or less, and optionally ferrite at an area ratio of 20% or less. The hot-rolled steel has a chemical composition containing (in mass-%): C: 0.07-0.10, Si: 0.01-0.25, Mn: 1.5-2.0, Cr: 0.5-1.0, Ni: 0.1-0.5, Cu: 0.1-0.3, Mo: 0.01-0.2, Al: 0.01-0.05, Nb: 0.015-0.04, V: 0-0.1, i.e. optionally up to 0.1 mass-% Vanadium, Ti: 0-0.1, whereby the balance is Fe and unavoidable impurities.Type: GrantFiled: November 27, 2018Date of Patent: May 23, 2023Assignee: SSAB TECHNOLOGY ABInventor: Erik Nymann