Patents Examined by Anthony Liang
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Patent number: 10006111Abstract: A sintered alloy includes, in percentage by mass, Cr: 11.75 to 39.98, Ni: 5.58 to 24.98, Si: 0.16 to 2.54, P: 0.1 to 1.5, C: 0.58 to 3.62 and the balance of Fe plus unavoidable impurities; a phase A containing precipitated metallic carbides with an average particle diameter of 10 to 50 ?m; and a phase B containing precipitated metallic carbides with an average particle diameter of 10 ?m or less, wherein the phase A is randomly dispersed in the phase B and the average particle diameter DA of the precipitated metallic carbides in the phase A is larger than the average particle diameter DB of the precipitated metallic carbides of the phase B.Type: GrantFiled: December 1, 2016Date of Patent: June 26, 2018Assignee: HITACHI POWDERED METALS CO., LTD.Inventors: Daisuke Fukae, Hideaki Kawata
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Patent number: 9982563Abstract: A sintered alloy includes, in percentage by mass, Cr: 10.37 to 39.73, Ni: 5.10 to 24.89, Si: 0.14 to 2.52, Cu: 1.0 to 10.0, P: 0.1 to 1.5, C: 0.18 to 3.20 and the balance of Fe plus unavoidable impurities; a phase A containing precipitated metallic carbide with an average particle diameter of 10 to 50 ?m; and a phase B containing precipitated metallic carbide with an average particle diameter of 10 ?m or less, wherein the phase A is randomly dispersed in the phase B and the average particle diameter DA of the precipitated metallic carbide in the phase A is larger than the average particle diameter DB of the precipitated metallic carbide of the phase B.Type: GrantFiled: December 4, 2017Date of Patent: May 29, 2018Assignee: HITACHI CHEMICAL COMPANY, LTD.Inventors: Daisuke Fukae, Hideaki Kawata
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Patent number: 9982562Abstract: A sintered alloy includes, in percentage by mass, Cr: 10.37 to 39.73, Ni: 5.10 to 24.89, Si: 0.14 to 2.52, Cu: 1.0 to 10.0, P: 0.1 to 1.5, C: 0.18 to 3.20 and the balance of Fe plus unavoidable impurities; a phase A containing precipitated metallic carbide with an average particle diameter of 10 to 50 ?m; and a phase B containing precipitated metallic carbide with an average particle diameter of 10 ?m or less, wherein the phase A is randomly dispersed in the phase B and the average particle diameter DA of the precipitated metallic carbide in the phase A is larger than the average particle diameter DB of the precipitated metallic carbide of the phase B.Type: GrantFiled: March 3, 2014Date of Patent: May 29, 2018Assignee: HITACHI CHEMICAL COMPANY, LTD.Inventors: Daisuke Fukae, Hideaki Kawata
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Patent number: 9943625Abstract: The present invention relates to a magnesium alloy having controlled corrosion resistance properties, which comprises magnesium (Mg) and an alloying element and includes a magnesium phase and a phase composed of magnesium and the alloying element, wherein the difference in electrical potential between the magnesium phase and the phase composed of magnesium and the alloying element is greater than 0 V but not greater than 0.2 V.Type: GrantFiled: December 9, 2016Date of Patent: April 17, 2018Assignee: U&I CorporationInventors: Ja-Kyo Koo, Hyun-Kwang Seok, Seok-Jo Yang, Yu-Chan Kim, Sung-Youn Cho, Jong-Tack Kim
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Patent number: 9914988Abstract: Provided are a high-strength cold-rolled steel sheet having excellent formability, excellent ductility, excellent hole expansibility, and high yield ratio and a method for producing the same. The high-strength cold-rolled steel sheet contains 0.05% to 0.15% C, 0.10% to 0.90% Si, 1.0% to 2.0% Mn, 0.005% to 0.05% P, 0.0050% or less S, 0.01% to 0.10% Al, 0.0050% or less N, and 0.010% to 0.100% Nb, which are chemical components, on a mass basis, the balance being Fe and unavoidable impurities; has a microstructure which is a multi-phase structure containing 90% or more of a ferrite phase and 0.5% to less than 5.0% of a martensite phase on a volume fraction basis, the remainder being low-temperature transformation phases; and has a yield ratio of 70% or more.Type: GrantFiled: November 30, 2011Date of Patent: March 13, 2018Assignee: JFE Steel CorporationInventors: Katsutoshi Takashima, Yuki Toji, Kohei Hasegawa
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Patent number: 9855603Abstract: Material and method for the production of material with isotropic, mechanical properties and improved wear resistance and high hardness potential. Method includes producing in a powder metallurgical (PM) method a slug or ingot from a material of ledeburite tool steel alloy, and subjecting one of the slug or ingot or a semi-finished product produced from the slug or ingot to full annealing at a temperature of over 1100° C., but at least 10° C. below the fusing temperature of the lowest melting structure phase with a duration of over 12 hrs. In this manner, an average carbide phase size of the material is increased by at least 65%, a surface shape of the material is rounded and a matrix is homogenized. Method further includes subsequently processing the material into thermally tempered tools with high wear resistance occurs or into parts to which abrasive stress is applied.Type: GrantFiled: May 7, 2013Date of Patent: January 2, 2018Assignee: Boehler Edelstahl GmbH & Co. KGInventors: Gert Kellezi, Devrim Caliskanoglu
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Patent number: 9859055Abstract: Provided is a method for manufacturing a rare-earth magnet capable of manufacturing a rare-earth magnet with high degree of orientation by sufficient plastic deformation while suppressing cracks at the side faces of a compact that is plastic-deformed during the hot deformation processing. The method includes a step of preparing a compact S, preparing a plastic processing mold including a die D in which a cavity Ca is provided, and punches P that are slidable in the cavity Ca, the cavity Ca having a cross section that is larger in cross-sectional dimensions than a cross section of the compact S that is orthogonal to a pressing direction by the punches P; and a step of placing the compact S in the cavity Ca and performing hot deformation processing, thus manufacturing an orientational magnet C.Type: GrantFiled: October 4, 2013Date of Patent: January 2, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Noritaka Miyamoto, Daisuke Ichigozaki, Tetsuya Shoji, Eisuke Hoshina, Akira Kano, Osamu Yamashita
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Patent number: 9847169Abstract: A production method includes producing a rare-earth magnet precursor (S?) by performing first hot working in which, in two side surfaces of a sintered body, which are parallel to a pressing direction and are opposite to each other, one side surface is brought to a constrained state to suppress deformation, and the other side surface is brought to an unconstrained state to permit deformation; and producing a rare-earth magnet by performing second hot working in which, in two side surfaces (S?1, S?2) of the rare-earth magnet precursor (S?), which are parallel to the pressing direction, a side surface (S?2), which is in the unconstrained state in the first hot working, is brought to the constrained state to suppress deformation, and a side surface (S?1), which is in the constrained state in the first hot working, is brought to the unconstrained state to permit deformation.Type: GrantFiled: March 31, 2014Date of Patent: December 19, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Akira Kano, Dai Kobuchi, Eisuke Hoshina, Osamu Yamashita, Noritaka Miyamoto
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Patent number: 9847158Abstract: The present invention relates to a grain oriented electrical steel sheet having excellent core loss and to a method for manufacturing same. The electrical steel sheet according to one aspect of the present invention may have a composition comprising, by weight %, Si: 1.0 to 4.0%, Al: 0.1 to 4.0%, and a rare earth element: 0.0001 to 0.5% by the total content of the whole rare earth element.Type: GrantFiled: December 28, 2012Date of Patent: December 19, 2017Assignee: POSCOInventors: Byung-Deug Hong, Dong-Kyun Kim
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Patent number: 9797030Abstract: An aluminum alloy including additions of scandium, zirconium, erbium and, optionally, silicon.Type: GrantFiled: September 27, 2016Date of Patent: October 24, 2017Assignees: The Boeing Company, Ford Global Technologies, LLC, Northwestern UniversityInventors: Christopher S. Huskamp, Christopher Booth-Morrison, David C. Dunand, David N. Seidman, James M. Boileau, Bita Ghaffari
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Patent number: 9776243Abstract: A selective laser sintering method reduces a warping deformation of a three-dimensional shaped object, the warping deformation being due to the scanning of a light beam. The manufacturing method is a method for manufacturing a three-dimensional shaped object by alternate repetition of a powder-layer forming and a solidified-layer forming, wherein a scanning of the light irradiation is divided into light beam-scannings “A” and “B”, the light beam-scanning “A” being for the light irradiation of a peripheral portion corresponding to a periphery of the three-dimensional shaped object, and the light beam-scanning “B” being for the light irradiation of an internal portion corresponding to a region of the three-dimensional shaped object, the region being located inside the periphery. In particular, the peripheral portion is subjected to a discontinuous light beam-irradiation in the light beam-scanning “A” such that an irradiation path of the light beam is divided into a plurality of sub-irradiation paths.Type: GrantFiled: March 4, 2015Date of Patent: October 3, 2017Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Satoshi Abe, Masataka Takenami, Isamu Matsumoto
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Patent number: 9767836Abstract: A method for making an ordered magnetic alloy includes (a) providing a thermally conductive base having opposite first and second surfaces; (b) forming a thermal barrier layer on the first surface of the thermally conductive base; (c) forming a disordered magnetic alloy layer on the thermal barrier layer, the disordered magnetic alloy layer being made from a disordered alloy which contains a first metal selected from Fe, Co, and Ni, and a second metal selected from Pt and Pd; and (d) after step (c), applying a transient heat to the thermally conductive base to cause rapid thermal expansion of the thermally conductive base, which, in turn, causes generation of an in-plane tensile stress in the disordered magnetic alloy layer.Type: GrantFiled: October 25, 2013Date of Patent: September 19, 2017Assignee: NATIONAL TSING HUA UNIVERSITYInventors: Chih-Huang Lai, Liang-Wei Wang, Yun-Chung Wu, Wen-Chieh Shih
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Patent number: 9761342Abstract: A method of preparing silver-based oxide electrical contact materials with fiber-like arrangement, includes the following steps of: (1) uniformly mixing the silver-metal alloy powders and graphite powders and then ball-milling; (2) internally oxidizing the ball-milled powders; (3) sieving; (4) placing the sieved powders and the matrix powders into the powder mixer for mixing; (5) cold-isostatically pressing; (6) sintering; (7) hot-pressing; and (8) hot-extruding, thereby obtaining the silver-based oxide electrical contact material with fiber-like arrangement. The method of the present invention can obtain the silver-based oxide electrical contact material having neat fiber-like arrangement with no specific requirement on processing deformation, plasticity and ductility of the reinforcing phase. The production process in this method is simple and is easy to operate. Besides, there is no particular requirement on the equipment.Type: GrantFiled: April 11, 2011Date of Patent: September 12, 2017Assignee: Wenzhou Hongfeng Electrical Alloy Co., Ltd.Inventors: Lesheng Chen, Xiao Chen, Gengxin Qi, Chengfa Mu
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Patent number: 9761358Abstract: A method for producing a nanocrystalline rare earth magnet having a grain and a grain boundary phase includes: quenching a melt of a rare earth magnet composition to form a quenched thin ribbon having a nanocrystalline structure; sintering the quenched thin ribbon to obtain a sintered body; heat treating the sintered body at a temperature which is higher than a lowest temperature in a first temperature range where the grain boundary phase diffuses or flows, and which is lower than a lowest temperature in a second temperature range where the grain becomes coarse; and quenching the heat treated sintered body to 200° C. or less at a cooling speed of 50° C./min or more.Type: GrantFiled: August 22, 2012Date of Patent: September 12, 2017Assignee: Toyota Jidosha Kabushiki KaishaInventors: Noritsugu Sakuma, Hidefumi Kishimoto
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Patent number: 9744591Abstract: An iron-based sintered sliding member is provided in which solid lubricating agent is dispersed uniformly inside of powder particles in addition to inside of pores and particle interfaces of the powder, the agent is strongly fixed, and sliding properties and mechanical strength are superior. The iron-based sintered sliding member contains S: 3.24 to 8.10 mass %, remainder: Fe and inevitable impurities, as an overall composition; the metallic structure includes a ferrite base in which sulfide particles are dispersed, and pores; and the sulfide particles are dispersed at a ratio of 15 to 30 vol % versus the base.Type: GrantFiled: March 18, 2014Date of Patent: August 29, 2017Assignee: HITACHI CHEMICAL COMPANY, LTD.Inventors: Daisuke Fukae, Hideaki Kawata
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Patent number: 9732405Abstract: A hot rolled steel sheet includes, as a chemical composition, at least one selected from Ti, REM, and Ca, and includes, as a metallographic structure, a ferrite as a primary phase, at least one of a martensite and a residual austenite as a secondary phase, and plural inclusions, wherein a total length in the rolling direction of both inclusion-cluster whose length in the rolling direction is 30 ?m or more and independent-inclusion whose length in the rolling direction is 30 ?m or more is 0 mm to 0.25 mm per 1 mm2.Type: GrantFiled: March 16, 2012Date of Patent: August 15, 2017Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Yuzo Takahashi, Junji Haji, Osamu Kawano
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Patent number: 9732394Abstract: A method of treating bearing rolling elements or bearing rings after a hardening and temper heat treatment is disclosed. The method may include treating the bearing rolling elements in a tumbling treatment and then in a duplex hardening treatment. The method may include treating the bearing rings in a peening treatment and then in a duplex hardening treatment. The duplex hardening treatment may also include at least one sequential process segment consisting of subjecting the bearing rolling element & rings to a nitriding process to increase the surface hardness and compressive residual stress. The combined two-step process produces a deep surface/sub-surface residual stress greater than the depth of the maximum operating von-Mises shear stress along with an ultra-hard surface with high magnitude of compressive residual stress. In so doing, the bearing ring and rolling elements will have significantly enhanced rolling contact fatigue resistance and resistance to surface imperfections and debris.Type: GrantFiled: May 17, 2012Date of Patent: August 15, 2017Assignee: UNITED TECHNOLOGIES CORPORATIONInventors: Herbert A. Chin, William P. Ogden, David A. Haluck, Sean McCutchan, Ronald F. Spitzer, Allen V. Keller
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Patent number: D1016347Type: GrantFiled: September 30, 2021Date of Patent: February 27, 2024Assignee: COPLUS INC.Inventor: Po-Hua Wu
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Patent number: D1016358Type: GrantFiled: December 7, 2021Date of Patent: February 27, 2024Inventor: Hamid Rashidi Doust
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Patent number: D1017116Type: GrantFiled: January 4, 2022Date of Patent: March 5, 2024Assignee: W SCHONBEK LLCInventor: Roslyn J. Yando