Patents Examined by Anthony M Liang
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Patent number: 12157921Abstract: In the present invention, there is provided a coating liquid for forming an insulation coating for a grain-oriented electrical steel sheet, including: a solvent; and one or two more layered clay mineral powders having a specific surface area of 20 m2/g or more. In addition, in the present invention, there is provided a grain-oriented electrical steel sheet including: a base metal; and an insulation coating provided on a surface of the base metal, in which the insulation coating contains SiO2, and one or two of Al2O3 and MgO, and has a porosity of 10% or less.Type: GrantFiled: March 19, 2019Date of Patent: December 3, 2024Assignee: NIPPON STEEL CORPORATIONInventors: Shuichi Yamazaki, Kazutoshi Takeda, Hiroyasu Fujii, Toru Nagai
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Patent number: 12157936Abstract: Grain-oriented electrical steel sheet excellent in magnetic properties and excellent in adhesion of primary coating to steel sheet provided with a base metal steel sheet having a predetermined chemical composition and a primary coating formed on a surface of the base metal steel sheet and containing Mg2SiO4 as a main constituent, where a peak position of Al emission intensity obtained when performing elemental analysis by glow discharge optical emission spectrometry from a surface of the primary coating in a thickness direction of the grain-oriented electrical steel sheet is arranged within a range of 2.4 to 12.0 ?m from the surface of the primary coating in the thickness direction, a number density of Al oxides at the peak position of Al emission intensity and of a size of 0.2 ?m or more in terms of a circle equivalent diameter based on the area is 0.03 to 0.Type: GrantFiled: January 8, 2020Date of Patent: December 3, 2024Assignee: NIPPON STEEL CORPORATIONInventors: Ryutaro Yamagata, Ichiro Tanaka
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Patent number: 12152286Abstract: Grain-oriented electrical steel sheet excellent in magnetic properties and excellent in adhesion of the primary coating to the steel sheet is provided. This is provided with a base metal steel sheet containing a predetermined chemical composition and a primary coating formed on a surface of the base metal steel sheet and containing Mg2SiO4 as a main constituent. A peak position of Al emission intensity obtained when performing elemental analysis by glow discharge optical emission spectrometry from a surface of the primary coating in a thickness direction of the grain-oriented electrical steel sheet is arranged within a range of 2.0 to 10.0 ?m from the surface of the primary coating in the thickness direction. A number density of Al oxides of a size of 0.2 ?m or more in terms of a circle equivalent diameter based on the area at the peak position of Al emission intensity is 0.032 to 0.Type: GrantFiled: January 8, 2020Date of Patent: November 26, 2024Assignee: NIPPON STEEL CORPORATIONInventors: Ryutaro Yamagata, Ichiro Tanaka
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Patent number: 12152296Abstract: A cobalt based superalloy and a method of producing the same. The superalloy includes a nominal composition comprising at least cobalt, aluminum, Z and vanadium, Z being at least one of tantalum and niobium, processed such that the superalloy comprises gamma and gamma-prime phases with stable gamma+gamma-prime microstructures.Type: GrantFiled: May 22, 2019Date of Patent: November 26, 2024Assignee: NORTHWESTERN UNIVERSITYInventors: David C. Dunand, Fernando Reyes Tirado
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Patent number: 12146212Abstract: When a steel material is processed to produce a grain-oriented electrical steel sheet, conditions of a decarburization annealing process and conditions of a process before the decarburization annealing are adjusted so that a difference in concentration of O, Si, Al, Mn and P between the front and back surfaces of the steel sheet after the decarburization annealing is within a given range with respect to an average concentration between the front and back surfaces, and hence the difference in concentration of each of O, Si and Mg between the front and back surfaces of the product sheet is within ±5%, the difference in concentration of one or more of Al, Mn and P between the front and back surfaces is within ±15% and the difference in the concentration of one or more of Ca and Ti between the front and back surfaces is within ±20%.Type: GrantFiled: September 25, 2019Date of Patent: November 19, 2024Assignee: JFE Steel CorporationInventors: Makoto Watanabe, Hidemasa Kodama
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Patent number: 12139772Abstract: A high strength steel sheet according to the present invention contains a predetermined chemical composition, in a metallographic structure, the total area ratio of tempered martensite and bainite is 80% or more, at a sheet thickness ¼ position of a cross section parallel to a rolling direction and perpendicular to a rolled surface, the standard deviation of number densities of precipitates having a diameter of 10 nm or less and including one or both of Ti and Nb is less than 5×1010 numbers/mm3, and the tensile strength is 780 MPa or more.Type: GrantFiled: July 8, 2020Date of Patent: November 12, 2024Assignee: NIPPON STEEL CORPORATIONInventors: Genki Abukawa, Hiroshi Shuto
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Patent number: 12139773Abstract: A method for producing ultra-thin hot-rolled strip steel, the method comprising the following process steps: A. a smelting process: feeding scrap steel into an induction electric furnace (1) for smelting so that the scrap steel melts into molten steel; B. a refining process: using a ladle refining furnace (2) and a ladle vacuum degassing furnace (3) to refine the molten steel; C. a continuous casting process: casting the refined molten steel into a cast strip blank that has a thickness of 1.6-2.5 mm by means of a dual-roller thin strip continuous casting system (4); D. a hot rolling process: directly feeding the cast strip blank that was cast in the continuous casting process to a single-stand hot rolling mill (9) for rolling to produce hot-rolled strip steel, the thickness of the hot-rolled strip steel being 0.8-1.5 mm; E. a cooling coiling process: performing atomizing cooling on the hot-rolled strip steel, and coiling after the strip steel temperature is controlled to be 400-750° C.Type: GrantFiled: September 12, 2019Date of Patent: November 12, 2024Assignee: BAOSHAN IRON & STEEL CO., LTD.Inventors: Yuan Fang, Jianchun Wu, Jian Zhang
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Patent number: 12139781Abstract: A non-oriented electrical steel sheet according to an embodiment of the present invention includes: in wt %, C at 0.004 wt % or less (excluding 0 wt %), Si at 2.5 to 4.0 wt %, P at 0.1 wt % or less (excluding 0 wt %), Al at 0.3 to 2.0 wt %, N at 0.003 wt % or less (excluding 0 wt %), S at 0.003 wt % or less (excluding 0 wt %), Mn at 0.15 to 2.5 wt %, Cr at 0.5 wt % (excluding 0 wt %), and the balance including Fe and other impurities unavoidably added thereto; satisfies the following Equation 1; and has an average grain size of 20 ?m or less. [Mn]?1450×[S]?0.8??[Equation 1] (In Equation 1, [Mn] and [S] represent a content (wt %) of Mn and S, respectively.).Type: GrantFiled: May 23, 2019Date of Patent: November 12, 2024Assignee: POSCO CO., LTDInventors: Jae-Song Kim, Seung Il Kim, Jae Kim, Su-Yong Shin, Yong-Soo Kim
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Patent number: 12139778Abstract: An alloy formed of aluminum, nickel, scandium and optionally one, two or more further metals. The aluminum alloy is suitable for additive manufacturing of lightweight highly thermally conductive components for aircraft, such as heat exchangers. In a first step, a powder of the described aluminum alloy is produced by additive manufacturing, such as laser melting in the L-PBF process. Large grains are able to grow epitaxially along the build direction thereby increasing phonon and electron mobility along the build direction. With this, a higher thermal conductivity can be achieved. In a second step, the preliminary part is hardened by precipitation of secondary phases at 250 to 400 C to form the hardened part. 3D-printed lightweight parts with high thermal conductivity are obtained.Type: GrantFiled: September 2, 2022Date of Patent: November 12, 2024Assignee: AIRBUS SASInventor: David Schimbäck
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Patent number: 12134801Abstract: The present invention provides a high strength hot rolled steel sheet and a method for manufacturing same, the steel sheet containing, in weight percentage, 0.11-0.14% of C, 0.20-0.50% of Si, 1.8-2.0% of Mn, 0.03% or less of P, 0.02% or less of S, 0.01-0.04% of Nb, 0.5-0.8% of Cr, 0.01-0.03% of Ti, 0.2-0.4% of Cu, 0.1-0.4% of Ni, 0.2-0.4% of Mo, 0.007% or less of N, 0.001-0.006% of Ca, 0.01-0.05% of Al, a balance of Fe and inevitable impurities, wherein relational expressions 1 to 3 below are satisfied, and a microstructure includes, by area percentage, 88% or more of bainite, 10% or less of ferrite, 2% or less of pearlite, and 0.8% or less of island martensite. [Relational Expression 1] 7?(Mo/93)/(P/31)?16. [Relational Expression 2] 1.6?Cr+3Mo+2Ni?2. [Relational Expression 3] 6?(3C/12+Mn/55)×100?7.Type: GrantFiled: November 26, 2019Date of Patent: November 5, 2024Assignee: POSCO CO., LTDInventor: Jin-Ho Bae
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Patent number: 12134802Abstract: Grain-oriented electrical steel sheet excellent in magnetic properties and excellent in adhesion of the primary coating to the steel sheet is provided. The grain-oriented electrical steel sheet according to the present invention is provided with a base metal steel sheet containing a chemical composition containing, by mass %, C: 0.005% or less, Si: 0.5 to 7.0%, Mn: 0.05 to 1.00%, a total of S and Se: 0.005% or less, sol. Al: 0.005% or less, and N: 0.005% or less and having a balance comprised of Fe and impurities and with a primary coating formed on a surface of the base metal steel sheet and containing Mg2SiO4 as a main constituent, wherein a peak position of Al emission intensity obtained when performing elemental analysis by glow discharge optical emission spectrometry from a surface of the primary coating in a thickness direction of the grain-oriented electrical steel sheet is arranged within a range of 2.0 to 12.Type: GrantFiled: January 8, 2020Date of Patent: November 5, 2024Assignee: NIPPON STEEL CORPORATIONInventors: Ryutaro Yamagata, Ichiro Tanaka
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Patent number: 12134808Abstract: A hot-stamping formed body includes: a steel sheet having a predetermined chemical composition; and a plating layer provided on a surface of the steel sheet, the plating layer having an adhesion amount of 10 g/m2 to 90 g/m2 and a Ni content of 10 mass % to 25 mass %, and containing a remainder consisting of Zn and impurities.Type: GrantFiled: May 13, 2020Date of Patent: November 5, 2024Assignee: NIPPON STEEL CORPORATIONInventors: Daisuke Maeda, Yuri Toda, Kazuo Hikida
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Patent number: 12129526Abstract: Provided are a gradient steel material having a surface layer with ferrite and an inner layer with ferrite+pearlite, and a manufacturing method, the weight percentages of the components are: C?0.15%, Si?1%, Mn?1.5%, the balance of Fe and inevitable impurities, and the surface layer of the steel material is ferrite, the inner layer is ferrite+pearlite. The manufacturing method thereof includes: smelting, casting, rolling, heat treatment; wherein, in the heat treatment step, the steel material is heated above the austenitizing temperature Ac3, and hold at the temperature more than 3 min to ensure that the material is completely austenitized; subsequently, it is cooled to a temperature below Ar1 at a cooling rate lower than 0.5° C./s. The present steel material does not need to be obtained by means of the compound preparation of different materials, and is only processed and prepared by a single material, the process is short, the procedure is simple, and the cost is low.Type: GrantFiled: December 27, 2019Date of Patent: October 29, 2024Assignee: BAOSHAN IRON & STEEL CO., LTD.Inventors: Suoquan Zhang, Sihai Jiao, Jianhua Ding, Xiaojun Liang
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Patent number: 12129535Abstract: Provided is a steel sheet for cans. A steel sheet for cans comprises: a chemical composition containing, in mass %, C: 0.010% or more and 0.130% or less, Si: 0.04% or less, Mn: 0.10% or more and 1.00% or less, P: 0.007% or more and 0.100% or less, S: 0.0005% or more and 0.0090% or less, Al: 0.001% or more and 0.100% or less, N: 0.0050% or less, Ti: 0.0050% or more and 0.1000% or less, and Cr: 0.08% or less, and satisfying a relationship 0.005?(Ti*/48)/(C/12)?0.700 where Ti*=Ti?1.5S, with a balance consisting of Fe and inevitable impurities; a microstructure in which a proportion of cementite in ferrite grains is 10% or less; and an upper yield strength of 550 MPa or more.Type: GrantFiled: November 13, 2019Date of Patent: October 29, 2024Assignee: JFE STEEL CORPORATIONInventors: Nobusuke Kariya, Fusae Shiimori, Katsumi Kojima, Daisuke Otani
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Patent number: 12122884Abstract: A method for preparing an aqueous mineral suspension from an aqueous metal ore residue may include introducing into the aqueous metal ore residue a polymer (P) having a molecular mass Mw measured by GPC ranging from 2,000 to 20,000 g/mol. The polymer (P) may be prepared by radical polymerization of at least one anionic monomer (M). The suspension produced by such a method may have a Brookfield viscosity of which is lower than 1,800 mPa·s or a yield point of lower than 80 Pa.Type: GrantFiled: June 5, 2019Date of Patent: October 22, 2024Assignee: COATEXInventors: Mehdi Bouzid, Christian Jacquemet, Benoit Magny, Jacques Mongoin
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Patent number: 12123081Abstract: A hot rolled steel having a composition including the following elements, expressed in percentage by weight: 15%?Nickel?25% 6%?Cobalt?12% 2%?Molybdenum?6% 0.1%?Titanium?1% 0.0001%?Carbon?0.03% 0.002%?Phosphorus?0.02% 0%?Sulfur?0.005%. 0%?Nitrogen?0.01% and can contain one or more of the following optional elements 0%?Aluminum?0.1% 0%?Niobium?0.1% 0%?Vanadium?0.3% 0%?Copper?0.5% 0%?Chromium?0.5% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet comprising in area fraction, 20% to 40% Tempered Martensite, at least 60% of Reverted Austenite and inter-metallic compounds of Molybdenum, Titanium and Nickel.Type: GrantFiled: December 11, 2019Date of Patent: October 22, 2024Assignee: ArcelorMittalInventors: Lode Duprez, Tom Waterschoot, Nele Van Steenberge, Laura Moli Sanchez
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Patent number: 12123084Abstract: A method for producing a grain oriented electrical steel sheet includes a decarburization annealing process where an oxidation degree PH2O/PH2 is controlled and pickling is conducted after decreasing temperature, an annealing separator applying process where a mass ratio of MgO and Al2O3 in an annealing separator is controlled, a final annealing process where an oxidation degree is controlled when atmosphere includes hydrogen or a dew point is controlled when atmosphere consists of inert gas, an annealing separator removing process where water-washing is conducted using solution with inhibitor, and an insulation coating forming process where a mass ratio of phosphoric acid and metal compound in insulation coating forming solution is controlled.Type: GrantFiled: January 16, 2020Date of Patent: October 22, 2024Assignee: NIPPON STEEL CORPORATIONInventors: Shinsuke Takatani, Yoshiyuki Ushigami
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Patent number: 12121968Abstract: A method for binder jetting a three-dimensional (3D) object includes receiving a geometry of the object to be printed and generating instructions for printing the object. Generating the instructions includes slicing the geometry of the object into a series of cross-sectional shapes corresponding to where a binder fluid will be deposited onto a powder bed to form the object, and including a plurality of negatively printed features within at least some of the series of cross-sectional shapes, wherein an amount of binder fluid to be deposited in the negatively printed features is less than an amount of binder fluid to be deposited in a remainder of the cross-sectional shape. The amount of binder fluid to be deposited in the negatively printed features and a size of the negatively printed features is configured to allow gas to escape from the powder bed.Type: GrantFiled: January 18, 2021Date of Patent: October 22, 2024Assignee: Desktop Metal, Inc.Inventors: Alexander C. Barbati, George Steven Hudelson, Christopher Benjamin Renner, Michael Andrew Gibson
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Patent number: 12123068Abstract: A grain oriented electrical steel sheet includes: by mass %, 0.010% or less of C; 2.50 to 4.00% of Si; 0.010% or less of acid soluble Al; 0.012% or less of N; 1.00% or less of Mn; 0.020% or less of S; and a balance comprising Fe and impurities, and has a tension-insulation coating at steel sheet surface and a SiO2 intermediate oxide film layer with an average thickness of 1.0 nm to 1.0 ?m at an interface between the tension-insulation coating and the steel sheet surface. In the grain oriented electrical steel, when a surface of the intermediate oxide film layer is analyzed by an infrared reflection spectroscopy, a peak intensity IA at 1250 cm?1 and a peak intensity IB at 1200 cm?1 satisfy IB/IA?0.010.Type: GrantFiled: July 13, 2018Date of Patent: October 22, 2024Assignee: NIPPON STEEL CORPORATIONInventors: Takashi Kataoka, Yoshiyuki Ushigami, Shuichi Nakamura, Hiroyasu Fujii, Shunsuke Okumura
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Patent number: 12122222Abstract: A door beam includes an outer flange, an inner flange, and a pair of webs connecting the outer flange and the inner flange. The outer flange, the inner flange, and the pair of webs define a closed cross-sectional portion. The outer flange includes an outer central portion constituting the closed cross-sectional portion, and outer protruding portions protruding outward from the closed cross-sectional portion. The inner flange is formed with an attachment press working portion having been subjected to press working so as to serve as an attachment portion with respect to the inner panel at both end portions in the longitudinal direction. The outer protruding portion is formed with a mastic press working portion having been subjected to press working so as to serve as an attachment portion with respect to the outer panel.Type: GrantFiled: November 4, 2020Date of Patent: October 22, 2024Assignee: Kobe Steel, Ltd.Inventors: Hideki Ishitobi, Narikazu Hashimoto