Patents Examined by Alexandra M Moore
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Patent number: 11008637Abstract: In the method of producing a martensitic stainless steel strip, a quenching furnace of a quenching process includes at least a temperature raising unit and a holding unit. When a predetermined quenching temperature is set as T (° C.), the temperature raising unit is set to be within a temperature range of 0.7T (° C.) or higher and lower than T (° C.), and a set heating temperature on an exit side of the steel strip is set to be higher than a set heating temperature on an entry side of the steel strip when the steel strip passes through the temperature raising unit. The holding unit is set to the quenching temperature T (° C.). A time spent in the furnace by the steel strip in the temperature raising unit is equal to or longer than a time spent in the furnace by the steel strip in the holding unit.Type: GrantFiled: January 11, 2018Date of Patent: May 18, 2021Assignee: Hitachi Metals, Ltd.Inventor: Hiroyoshi Fujihara
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Patent number: 11000896Abstract: The invention belongs to the fields of amorphous alloy composites, additive manufacturing technology and hot isostatic pressing sintering forming, and in particular relates to a preparation method of tungsten particle reinforced amorphous matrix composites, comprising the following steps: (1) making tungsten powder and amorphous alloy powder into a preform by the micro-jetting and bonding 3D printing technology, specifically comprising: in the preforming process by micro-jetting and bonding, through a double-drum type powder feeding device, spraying tungsten powder and amorphous alloy powder into a layer of uniformly mixed powder layer by double nozzles, then bonding the powder layer into a bonding layer by the binder, and repeating the operations of spraying the powders and binder, so that a preform with uniform particle phase distribution is finally prepared; (2) placing the preform in a capsule, and performing heating and vacuumizing on the capsule in a heating furnace; and (3) placing the capsule in the hType: GrantFiled: March 30, 2018Date of Patent: May 11, 2021Assignee: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Pan Gong, Xinyun Wang, Yunfei Ma, Lei Deng, Junsong Jin
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Patent number: 11001903Abstract: In some examples, an apparatus includes a pallet supporting a plurality of workpieces, the pallet including through-holes structured to pass a quenching fluid. In some examples, the apparatus further includes a reservoir of quenching fluid configured to provide the quenching fluid, and a plurality of upturned wall portions extending from the pallet and substantially surrounding the exteriors of the plurality of workpieces. The plurality of upturned wall portions may be located in relative orientation to the plurality of workpieces to regulate heat transfer coefficients of the plurality of workpieces during a quenching operation.Type: GrantFiled: November 8, 2017Date of Patent: May 11, 2021Assignee: Rolls-Royce CorporationInventors: Gangshu Shen, Nathan J. Cooper, Nathan Wesley Ottow, Robert Louis Goetz, John F. Matlik
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Patent number: 10994333Abstract: A system (100) for building a three dimensional object includes a powder delivery station (10) for applying a layer of powder material on a building tray (200), a digital printing station (30) for printing a mask pattern on the layer, a sintering station (50) for selectively sintering the portion of the layer that is defined by the mask to be sintered and a stage (250) for repeatedly advancing the building tray (200) to each of the powder delivery station, digital printing station and sintering station to build a plurality of layers that together form the three dimensional object. The mask pattern defines a negative portion of the layer to be sintered. Optionally, the system includes a die compaction station (40) for compacting per layer of powder material.Type: GrantFiled: May 7, 2015Date of Patent: May 4, 2021Assignee: Stratasys Ltd.Inventor: Yehoshua Sheinman
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Patent number: 10988836Abstract: A method for producing a high-strength galvanized steel sheet having excellent fatigue resistance properties. The method includes an oxidation processing in which a steel sheet is heated at a temperature of 400 to 750° C. in an atmosphere having an O2 concentration of 1000 ppm by volume or more and a H2O concentration of 1000 ppm by volume or more, and the steel sheet is heated at a temperature of 600 to 850° C. in an atmosphere having an O2 concentration of less than 1000 ppm by volume and a H2O concentration of 1000 ppm by volume or more. The method also includes reduction-annealing in which the steel sheet is heated at a heating rate of 0.1° C./sec or more to a temperature of 650 to 900° C. in an atmosphere having a H2 concentration of 5 to 30 vol % and a H2O concentration of 10 to 1000 ppm by volume.Type: GrantFiled: February 16, 2017Date of Patent: April 27, 2021Assignee: JFE STEEL CORPORATIONInventors: Yoichi Makimizu, Yoshitsugu Suzuki, Gentaro Takeda, Hiroshi Hasegawa
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Patent number: 10968499Abstract: Ferritic stainless steel that has excellent formability and ridging resistance and can be produced with high productivity is provided. The ferritic stainless steel has: a predetermined chemical composition; a microstructure containing ferrite crystal grains which satisfy at least one of a C concentration of 2CC or more and an N concentration of 2CN or more, the ferrite crystal grains having a volume fraction with respect to a whole volume of the microstructure of 5% or more and 50% or less, where CC and CN are respectively C content and N content in the steel in mass %; and a Vickers hardness of 180 or less.Type: GrantFiled: July 2, 2015Date of Patent: April 6, 2021Assignee: JFE STEEL CORPORATIONInventors: Akito Mizutani, Masataka Yoshino, Mitsuyuki Fujisawa, Ayako Ta
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Patent number: 10960470Abstract: The present invention provides compositions and methods of making bimetallic metal alloys of composition for example, Rh/Pd; Rh/Pt; Rh/Ag; Rh/Au; Rh/Ru; Rh/Co; Rh/Ir; Rh/Ni; Ir/Pd; Ir/Pt; Ir/Ag; Ir/Au; Pd/Ni; Pd/Pt; Pd/Ag; Pd/Au; Pt/Ni; Pt/Ag; Pt/Au; Ni/Ag; Ni/Au; or Ag/Au prepared using microwave irradiation.Type: GrantFiled: April 11, 2014Date of Patent: March 30, 2021Assignee: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEMInventors: Simon M. Humphrey, Stephany Garcia
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Patent number: 10954578Abstract: Disclosed is a steel sheet having a predetermined chemical composition and a steel microstructure that contains, in area ratio, 35% or more and 80% or less of polygonal ferrite and 5% or more and 25% or less of martensite, and that contains, in volume fraction, 8% or more of retained austenite, in which the polygonal ferrite, the martensite, and the retained austenite have a mean grain size of 6 ?m or less, 3 ?m or less, and 3 ?m or less, respectively, and each have a mean grain aspect ratio of 2.0 or less, and in which a value obtained by dividing an Mn content in the retained austenite in mass % by an Mn content in the polygonal ferrite in mass % equals 2.0 or more.Type: GrantFiled: October 29, 2015Date of Patent: March 23, 2021Assignee: JFE STEEL CORPORATIONInventors: Yoshiyasu Kawasaki, Hiroshi Matsuda, Takeshi Yokota, Takako Yamashita, Kazuhiro Seto
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Patent number: 10946448Abstract: The present invention discloses a cold additive and hot forging combined forming method of amorphous alloy parts.Type: GrantFiled: April 24, 2018Date of Patent: March 16, 2021Assignee: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Xinyun Wang, Pan Gong, Yunfei Ma, Lei Deng, Junsong Jin
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Patent number: 10941475Abstract: A method for producing a high-strength galvanized steel sheet having excellent fatigue resistance properties. The method includes an oxidation processing in which a steel sheet is heated at a temperature of 400 to 750° C. in an atmosphere having an O2 concentration of 1000 ppm by volume or more and a H2O concentration of 1000 ppm by volume or more, and the steel sheet is heated at a temperature of 600 to 850° C. in an atmosphere having an O2 concentration of less than 1000 ppm by volume and a H2O concentration of 1000 ppm by volume or more. The method also includes reduction-annealing in which the steel sheet is heated at a heating rate of 0.1° C./sec or more to a temperature of 650 to 900° C. in an atmosphere having a H2 concentration of 5 to 30 vol % and a H2O concentration of 10 to 1000 ppm by volume.Type: GrantFiled: February 16, 2017Date of Patent: March 9, 2021Assignee: JFE STEEL CORPORATIONInventors: Yoichi Makimizu, Yoshitsugu Suzuki, Gentaro Takeda, Hiroshi Hasegawa
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Patent number: 10941472Abstract: Systems and methods for drawing high aspect ratio metallic glass-based materials are provided. Methods of drawing a high aspect ratio metallic glass-based material are premised on stably drawing high aspect ratio metallic glass-based material from a preform metallic glass-based composition, accounting for the relationships between: the desired formation of an amorphous structure that is substantially homogenous along the majority of the length of the drawn high aspect ratio material; the desired final geometry of the drawn high aspect ratio material; the nature of the force that is used to draw the molten metallic glass-based composition; the velocity at which the high aspect ratio material is drawn; the viscosity profile of the material along its length as it is being drawn; and/or the effect of temperature on the metallic glass-based material.Type: GrantFiled: January 9, 2017Date of Patent: March 9, 2021Assignee: Metal Morphing Technologies, Inc.Inventors: Thomas M. Hodges, John Brooke Delfini
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Patent number: 10941470Abstract: A Cr—Mn—N austenitic heat-resistant steel is provided. The heat-resistant steel comprises, in weight percentage, carbon 0.20% to 0.50%, silicon 0.50% to 2.00%, manganese 2.00% to 5.00%, phosphorus less than 0.04%, sulphur less than 0.03%, chromium 20.00% to 27.00%, nickel 6.00% to 8.00%, molybdenum less than 0.50%, niobium less than 0.60%, tungsten less than 0.60%, vanadium less than 0.15%, nitrogen 0.30% to 0.60%, zirconium less than 0.10%, cobalt less than 0.10%, yttrium less than 0.10%, boron less than 0.20%, with the balance iron. The heat-resistant steel has high temperature strength, high thermal conductivity, low thermal expansion coefficient, good dimensional stability, good ductility, heat resistance, impact resistance, and low production costs, and meets the requirements for high performance engines.Type: GrantFiled: August 25, 2017Date of Patent: March 9, 2021Assignee: TIANJIN NEW WEI SAN INDUSTRIAL CO., LTD.Inventors: Yousan Chen, Changbin Chen, Zhengde Lin, Zhixiong Guo, Michel Millot, Chengxing Xie, Jinhui Wang, Xuewen Wen, Mingming Tan, Lintao Zong, Henglin Tian
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Patent number: 10920296Abstract: A method for producing an alloy steel composition includes the following steps: performing a first heat treatment on an alloy steel composition and maintaining for a first time period to soften the alloy steel composition; performing a first cooling treatment on the softened alloy steel composition; performing a treatment on the softened the alloy steel composition to form a workpiece; performing a second heat treatment on the workpiece and maintaining for a second time period; and performing a second cooling treatment on the workpiece to make the workpiece become to be a Bainite structure, and a cooling rate of the second cooling treatment is high than the cooling rate of the first cooling treatment.Type: GrantFiled: May 24, 2017Date of Patent: February 16, 2021Assignee: ASUSTeK COMPUTER INC.Inventor: Shih-Wei Chiu
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Patent number: 10919093Abstract: The invention relates to a method for producing a sintered gear comprising a gear body on which at least one elastomer element is arranged, according to which a green compact is produced by pressing a powder, the green compact is sintered into a gear body and is hardened by carburization and subsequent quenching or sinter-hardening and subsequent quenching with a gas and afterwards the at least one elastomer element is vulcanized onto the gear body.Type: GrantFiled: June 22, 2017Date of Patent: February 16, 2021Assignee: Miba Sinter Austria GmbHInventors: Magdalena Dlapka, Christian Dumanski, Karl Dickinger, Martin Heissl
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Patent number: 10899929Abstract: The invention concerns the use of an aqueous suspension of solid particles of a calcium/magnesium compound of formula (A): nCa(OH)2.mCaCO3.aMgO.bMg(OH)2.cMgCO3.I as an agent regulating the breaking of a bitumen emulsion. The invention also concerns a bituminous road material obtained by mixing a solid mineral fraction with a cationic bitumen emulsion of the type binder in water, characterised in that it involves adding, to the mineral fraction, an aqueous suspension of solid particles of a calcium/magnesium compound of formula (A). The invention also concerns a method for preparing a material according to the invention and the use of same for producing surface courses, tack coats or temporary surface courses. The invention finally concerns a method for obtaining a tack coat by spreading a cationic bitumen emulsion, comprising a step of applying an aqueous suspension of solid particles of a calcium/magnesium compound of formula (A).Type: GrantFiled: July 10, 2015Date of Patent: January 26, 2021Assignee: LHOIST RECHERCHE ET DEVELOPMENTInventors: Frédéric Delfosse, Ivan Drouadaine, Bernard Laurent, Didier Lesueur
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Patent number: 10898956Abstract: A manufacturing method of a copper bonded part in which a first copper member and a second copper member are bonded together. The first copper member and the second copper member are made of copper or a copper alloy, and at least one of the first copper member and the second copper member includes a copper porous body made of copper or a copper alloy. This manufacturing method has a bonding material disposing step S01 of disposing a bonding material between the first copper member and the second copper member, and a reduction sintering step S02 of heating and holding the first copper member, the second copper member, and the bonding material in a reducing atmosphere in a range of 600° C. or higher and 1,050° C. or lower. The bonding material contains a copper oxide or a mixture of metallic copper and the copper oxide.Type: GrantFiled: October 12, 2016Date of Patent: January 26, 2021Assignee: MITSUBISHI MATERIALS CORPORATIONInventors: Jun Kato, Koichi Kita
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Patent number: 10894905Abstract: A catalyst for use with a phenolic resins which imparts accelerated curing at reduced temperatures. The catalyst is selected from elemental halogen or opium polyhalide compounds of the general formula: O+X(2n+1)?, where 1?n?4, Q is onium group, preferably selected from ammonium, sulfonium and phosphonium; and X is a halide. Each X may be the same or different and may include mixed halides such a X?Br2Cl or Cl2Br.Type: GrantFiled: August 23, 2017Date of Patent: January 19, 2021Assignee: 3M Innovative Properties CompanyInventors: Ilya Gorodisher, Gregory P. Sorenson, Guy D. Joly
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Patent number: 10876179Abstract: A method is provided for producing a hot-formed component, in particular a sheet-metal component made of steel, aluminum, magnesium or a combination of the materials. The method includes the acts of: heating a semifinished product, in particular a sheet-metal blank or a pre-shaped sheet-metal component, inserting the semifinished product into a molding tool, and quenching the semifinished product in the molding tool, wherein a change is made to the microstructure of the material at least in one portion. Before the insertion of the semifinished product into the molding tool, an insulating device is applied in at least one predetermined region of the semifinished product. The insulating device is connected in a form-fitting, integral and/or force-fitting manner to the semifinished product.Type: GrantFiled: February 3, 2017Date of Patent: December 29, 2020Assignee: Bayerische Motoren Werke AktiengesellschaftInventors: Bernd Kupetz, Juergen Becker
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Patent number: 10870902Abstract: A cold-rolled steel sheet has: a predetermined chemical composition; and a microstructure in which tempered martensite and bainite are contained in a total area ratio of 95-100% with respect to a whole volume of the microstructure; a number of predetermined inclusion groups is at most 0.8/mm2, the inclusion groups being formed by one or more inclusion particles, the one or more inclusion particles having a major axis length of 0.3 ?m or more and extending and/or distributed in a dot-sequence manner along a rolling direction; a number of carbides mainly composed of Fe having a predetermined size is at most 3,500/mm2; a number of carbides that are distributed in the tempered martensite and/or in the bainite and that have a diameter of 10 nm to 50 nm is at least 0.7×107/mm2; and prior ? grains have a mean grain size of 18 ?m or less.Type: GrantFiled: March 23, 2016Date of Patent: December 22, 2020Assignee: JFE STEEL CORPORATIONInventors: Yoshihiko Ono, Yoshimasa Funakawa, Ryosuke Yamaguchi, Nobuyuki Nakamura
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Patent number: 10843269Abstract: A method of producing a sintered and forged member includes a mixing process in which a manganese-containing powder made of Fe—Mn—C—Si containing manganese as a main component, an iron powder made of Fe, a copper powder made of Cu, and a graphite powder made of graphite are mixed together to prepare a mixed powder; a molding process in which the mixed powder is compression-molded into a molded product; a sintering process in which, when the molded product is heated, copper derived from the copper powder and manganese contained in the manganese-containing powder are alloyed, the alloyed copper-manganese alloy is brought into a liquid phase state, and the molded product is sintered to produce a sintered product while elements of the copper-manganese alloy diffuse into an iron base of the molded product; and a process in which the sintered product is forged.Type: GrantFiled: May 9, 2018Date of Patent: November 24, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Nobuyuki Shinohara, Kimihiko Ando, Toshiyuki Kosai