Patents by Inventor Han Ma
Han Ma has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20260110045Abstract: A 460 MPa-grade corrosion resistant steel plate, and a production method thereof, adopts a corrosion-resistant alloying composition system with combined addition of Cr+Ni+Mo+Cu+P, which ensures corrosion resistance and weldability while economizing the use of precious alloys. Based on the comprehensive design of chemical components, through precise control of process parameters during rolling and cooling processes, accurate control of the steel plate's microstructure, inclusion content and size is achieved, obtaining a 460 MPa-grade steel plate for wind tower with excellent comprehensive properties and marine atmospheric corrosion resistance.Type: ApplicationFiled: September 28, 2023Publication date: April 23, 2026Inventors: Han MA, Chunjie LU
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Publication number: 20260095411Abstract: A method for managing network traffic flow for a commercial passenger vehicle is provided. The method comprises: receiving, by a server comprising at least one processor, a request for a network session from a passenger device operating in a communication network onboard a commercial passenger vehicle; obtaining, from a payload of a predesignated packet in the network session, metadata that contains network traffic information associated with the communication network; correlating an identifier for the passenger device to a traffic flow in the network session, wherein the identifier is based on the metadata; and applying, based on the network traffic information, a traffic shaping policy to the passenger device corresponding to the identifier, wherein the traffic shaping policy controls routing of traffic flow of the passenger device through the communication network.Type: ApplicationFiled: October 2, 2024Publication date: April 2, 2026Inventors: Lai Sheng MIAO, Han MA, Jayme SNYDER
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Publication number: 20260014607Abstract: A high carbon steel wire coil and a production method includes: smelting to obtain molten steel; continuously casting the molten steel to obtain a continuous casting bloom, and performing a reduction with reduction rate that is first high, then low, and then high applied to the continuous casting bloom during continuous casting; heating the continuous casting bloom and then performing blooming to obtain a billet; heating the billet and then performing rolling and air cooling to obtain the wire coil. By finely controlling the dynamic soft reduction parameters during continuous casting, and a reduction with reduction rate that is first high, then low, and then high applied to the continuous casting bloom, the present invention significantly improves the segregation and porosity issues in the central region of the bloom from the source.Type: ApplicationFiled: May 9, 2023Publication date: January 15, 2026Inventors: Jianchao MA, Kui SHEN, Han MA, Qiang LI
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Patent number: 12398450Abstract: The present invention reveals an ultra-thin ultra-high strength steel wire, a wire rod for an ultra-thin ultra-high strength steel wire and its producing method. The chemical components of the wire rod comprise in percentage by mass: C 0.90˜0.96%, Si 0.12˜0.30%, Mn 0.30˜0.65%, Cr 0.10˜0.30%, Al?0.004%, Ti?0.001%, Cu?0.01%, Ni?0.01%, S?0.01%, P?0.01%, O?0.0006%, N?0.0006%, and the balance is Fe and unavoidable impurity elements. The wire rod for the ultra-thin ultra-high strength steel wire may be used as a base material for producing the ultra-thin ultra-high strength steel wire having a diameter in a range of 50˜60 ?m and a tensile strength larger than or equal to 4500 MPa.Type: GrantFiled: August 19, 2019Date of Patent: August 26, 2025Assignees: INSTITUTE OF RESEARCH OF IRON AND STEEL, JIANGSU PROVINCE/SHA-STEEL, CO., LTD., JIANGSU SHAGANG GROUP CO., LTD.Inventors: Xianjun Hu, Jinxi Fan, Han Ma, Feng Fang, Long Cheng
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Patent number: 12378629Abstract: The present invention discloses a wire rod for an ultrahigh-strength steel cord and a manufacturing method thereof. The manufacturing method includes: smelting molten steel where inclusions in sizes ?5 ?m are at a number density ?0.5/mm2 and sizes of inclusions are ?30 ?m; casting the molten steel into an ingot blank with a center carbon segregation value of 0.92-1.08; cogging the ingot blank into an intermediate blank with a center carbon segregation value of 0.95-1.05; rolling the intermediate blank into a wire rod; and performing temperature control cooling on the wire rod to obtain a wire rod with high purity, high homogeneity and tensile strength ?1,150 MPa. The wire rod may be used for an ultrahigh-strength steel cord with single tensile strength ?3,600 MPa.Type: GrantFiled: October 17, 2019Date of Patent: August 5, 2025Assignees: INSTITUTE OF RESEARCH OF IRON AND STEEL, JIANGSU PROVINCE/SHA-STEEL, CO., LTD., ZHANGJIAGANG RONGSHENG SPECIAL STEEL CO., LTD., JIANGSU SHAGANG GROUP CO., LTD.Inventors: Changdong Zou, Han Ma, Jiaqi Zhao, Kui Shen, Xiaofeng Cai, Yixin Shi, Yonglin Huang
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Patent number: 12378622Abstract: Disclosed are a high-strength steel bar and a production method therefor. The high-strength steel bar comprises, by mass percentage, the following chemical components: C: 0.15-0.32%, Si+Mn: 0.5-1.9%, Mn+Cr+Mo+Ni: 1.1-2.1%, V: 0.02-0.8%, at least one of Nb, Ti and Al: 0.01-0.3%, and the balance of Fe and inevitable impurities; wherein Mn=(2.5-3.5)Si, and a carbon equivalent satisfies Ceq=C+Mn/6+(Cr+Mo+V)/5+(Cu+Ni)/15?0.56%.Type: GrantFiled: July 22, 2019Date of Patent: August 5, 2025Assignees: INSTITUTE OF RESEARCH OF IRON & STEEL, JIANGSU PROVINCE/SHA-STEEL, CO., LTD., HANGJIAGANG HONGCHANG STEEL PLATE CO., LTD., JIANGSU SHAGANG GROUP CO., LTD.Inventors: Yu Zhang, Han Ma, Yun Zhou, Huande Chen
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Publication number: 20250215542Abstract: Please cancel the abstract of this application and replace it with the following amended abstract presented in clean form according to the procedures outlines in MPEP 714 (II) (B): A corrosion-resistant steel bar and a preparation method, in percentage by weight, the corrosion-resistant steel bar comprises 0.03% to 0.15% of C, 0.8% to 2.0% of Si, 0.8% to 2.0% of Mn, 0.10% to 0.50% of Cu, 0.08% to 0.2% of P, 0.005% to 0.01% of S, 0 to 0.1% of Nb, 0 to 0.2% of V, 0 to 0.1% of Ti, 0 to 0.1% of Al, and the balance of Fe and inevitable impurities; wherein, 0.6?Si/Mn?2.0, 0.25%?(Cu+P+S)?0.62%.Type: ApplicationFiled: July 27, 2023Publication date: July 3, 2025Applicants: JIANGSU SHAGANG GROUP CO., LTD, INSTITUTE OF RESEARCH OF IRON AND STEEL, JIANGSU PROVINCE/SHA-STEEL, CO. LTD (CN)Inventors: Huande CHEN, Han MA, Xiaowei YANG, Yu ZHANG, Yun ZHOU
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Publication number: 20250207230Abstract: Provided in the present application are a corrosion-resistant alloy steel bar and a preparation method therefor, wherein the corrosion-resistant alloy steel bar comprises, in percentage by weight: 0.05-0.25% of C, 1.05-2% of Si, 0.3-1.5% of Mn, 0.5-2.5% of Cr, 0.05-1% of Ni, 0.001-0.005% of O, 0.001-0.0035% of S, 0.005-0.1% of Ti, 0.005-0.1% of Al, 0.005-0.03% of V, and 0.005-0.03% of Nb, with the balance being Fe and inevitable impurities. The preparation method therefor comprises the successive steps of smelting, refining, continuous casting, rolling and cooling. In the present application, elements such as Si, Ti, Al and Mn are used for compensating for the reduction in corrosion resistance caused by a decrease in the content of Cr, such that the production cost of the corrosion-resistant alloy steel bar are greatly reduced.Type: ApplicationFiled: January 18, 2023Publication date: June 26, 2025Applicants: INSTITUTE OF RESEARCH OF IRON AND STEEL, JIANGSU PROVINCE/SHA-STEEL, CO. LTD (CN), JIANGSU SHAGANG STEEL CO., LTD., JIANGSU SHAGANG GROUP CO., LTD.Inventors: Huande CHEN, Han MA, Jinyang JIANG, Fengjuan WANG, Yu ZHANG, Hongguo BAI, Xiaowei YANG, Hai ZHANG, Zhaoyi CHEN
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Publication number: 20250178134Abstract: A method for preparing a steel for a high-Ti pipeline submerged-arc welding wire, comprising converter smelting, LF refining, continuous casting, rolling and cooling; in LF refining, refined slag components by weight percentage are: 40 to 50% of (CaO+CaF2), 30 to 40% of Al2O3, 35% of SiO2, and 10 to 20% of MnO, and during the LF refining process, a pure calcium wire is fed before tapping. A steel for a submerged-arc welding wire and a preparation method therefor, a wire rod for a submerged-arc welding wire, a submerged-arc welding wire and a preparation method therefor. The steel for the submerged-arc welding wire and the preparation method for the submerged-arc welding wire overcome the defects of submerged-arc welding wire being high in cost and prone to nodulation; when the steel for the submerged-arc welding wire is prepared, it may continuously cast in more than 10 furnaces.Type: ApplicationFiled: September 22, 2023Publication date: June 5, 2025Inventors: Na WANG, Yu ZHANG, Han MA
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Publication number: 20250137081Abstract: A method for controlling brittle inclusions in cord steel. The method includes the following steps: adding alloys at the moment of tapping in a furnace primary smelting stage and adding silicon carbide and synthetic slag to a top of ladle slag at the end of tapping to form slag; adding the alloys in a refining stage and feeding carbon wires; and adding lime, silicon carbide, the synthetic slag, and performing electrification to slag, where the slag composition meets the following conditions: CaO/SiO2=0.9-1.2, Al2O3?5%, MgO 4-8%, [MnO+T·Fe]2-5%.Type: ApplicationFiled: July 12, 2022Publication date: May 1, 2025Inventors: Jiaqi ZHAO, Lianbing ZHANG, Jianchao MA, Han MA
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Publication number: 20240068064Abstract: The present invention discloses a 400 MPa corrosion-resistant steel bar and a production method thereof. The steel bar includes the following chemical ingredients: 9.5-10.4% of Cr, 1.0-1.2% of Mo, 0.3-0.6% of Mn, 0.01-1% of Ni, 0.01-0.5% of Cu, at most 0.014% of C, at most 0.004% of N, 0.01-0.05% of Nb, 0.2-0.6% of Si, and the balance of Fe, where Cr+Mo+0.5Mn+0.35Ni+0.25Cu is 11.1-12.2%, and C+N+0.3Si+Mn+1.8Nb is 0.4-0.8%.Type: ApplicationFiled: April 12, 2021Publication date: February 29, 2024Applicants: INSTITUTE OF RESEARCH OF IRON AND STEEL, JIANGSU PROVINCE/SHA-STEEL, CO. LTD (CN), JIANGSU SHAGANG GROUP CO., LTD.Inventors: Han MA, Yun ZHOU, Jiaqi ZHAO, Yu ZHANG, Huande CHEN
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Publication number: 20230416865Abstract: A wire rod for a 5000 MPa-grade diamond wire and a production method are provided. The wire rod includes the following chemical components: 1.01% to 1.1% of carbon, 0.15% to 0.4% of silicon, 0.3% to 0.6% of manganese, 0.01% to 0.4% of chromium, 0.0005% to 0.002% of boron and/or 0.01% to 0.09% of vanadium; and the balance of iron and impurities. The production method includes vacuum melting, electroslag remelting and/or vacuum consumable melting, grinding after cogging/forging, high-speed wire rolling and cooling, and cogging at 1030° C. to 1060° C. The wire rod, with structural uniformity and tensile strength of more than or equal to 1320 MPa, can be configured to prepare 5000 MPa-grade steel wires with a diameter of 40 ?m to 46 ?m.Type: ApplicationFiled: November 12, 2020Publication date: December 28, 2023Applicants: INSTITUTE OF RESEARCH OF IRON AND STEEL, JIANGSU PROVINCE/SHA-STEEL, CO. LTD (CN), ZHANGJIAGANG RONGSHENG SPECIAL STEEL CO. LTD., JIANGSU SHAGANG GROUP CO., LTD.Inventors: Han MA, Kui SHEN, Xianjun HU, Lei WANG
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Publication number: 20220340996Abstract: The present invention discloses a wire rod for an ultrahigh-strength steel cord and a manufacturing method thereof. The manufacturing method includes: smelting molten steel where inclusions in sizes ?5 ?m are at a number density ?0.5/mm2 and sizes of inclusions are ?30 ?m; casting the molten steel into an ingot blank with a center carbon segregation value of 0.92-1.08; cogging the ingot blank into an intermediate blank with a center carbon segregation value of 0.95-1.05; rolling the intermediate blank into a wire rod; and performing temperature control cooling on the wire rod to obtain a wire rod with high purity, high homogeneity and tensile strength ?1,150 MPa. The wire rod may be used for an ultrahigh-strength steel cord with single tensile strength ?3,600 MPa.Type: ApplicationFiled: October 17, 2019Publication date: October 27, 2022Inventors: CHANGDONG ZOU, HAN MA, JIAQI ZHAO, KUI SHEN, XIAOFENG CAI, YIXIN SHI, YONGLIN HUANG
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Publication number: 20220243310Abstract: The present invention reveals an ultra-thin ultra-high strength steel wire, a wire rod for an ultra-thin ultra-high strength steel wire and its producing method. The chemical components of the wire rod comprise in percentage by mass: C 0.90˜0.96%, Si 0.12˜0.30%, Mn 0.30˜0.65%, Cr 0.10˜0.30%, Al?0.004%, Ti?0.001%, Cu?0.01%, Ni?0.01%, S?0.01%, P?0.01%, O?0.0006%, N?0.0006%, and the balance is Fe and unavoidable impurity elements. The wire rod for the ultra-thin ultra-high strength steel wire may be used as a base material for producing the ultra-thin ultra-high strength steel wire having a diameter in a range of 50˜60 ?m and a tensile strength larger than or equal to 4500 MPa.Type: ApplicationFiled: August 19, 2019Publication date: August 4, 2022Inventors: XIANJUN HU, JINXI FAN, HAN MA, FENG FANG, LONG CHENG
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Publication number: 20220220573Abstract: Disclosed are a high-strength steel bar and a production method therefor. The high-strength steel bar comprises, by mass percentage, the following chemical components: C: 0.15-0.32%, Si+Mn: 0.5-1.9%, Mn+Cr+Mo+Ni: 1.1-2.1%, V: 0.02-0.8%, at least one of Nb, Ti and Al: 0.01-0.3%, and the balance of Fe and inevitable impurities; wherein Mn=(2.5-3.5)Si, and a carbon equivalent satisfies Ceq=C+Mn/6+(Cr+Mo+V)/5+(Cu+Ni)/15?0.56%.Type: ApplicationFiled: July 22, 2019Publication date: July 14, 2022Inventors: YU ZHANG, HAN MA, YUN ZHOU, HUANDE CHEN
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Patent number: 10316386Abstract: There is provided a high-carbon steel wire rod and a preparation method thereof. Wherein, the high-carbon steel wire rod comprising the following ingredients: C, Si, Mn, Cr, V, Ti and Fe. The high-carbon steel wire rod has satisfactory mechanical properties, including high strength with an average tensile strength of 1560 MPa as well as good plasticity with an average after-fracture shrinkage rate of 30% and an after-fracture elongation percentage larger than or equal to 9%, which can meet the performance requirements for producing 2300 MPa level pre-stressed steel strand.Type: GrantFiled: February 18, 2014Date of Patent: June 11, 2019Assignee: INSTITUTE OF RESEARCH OF IRON AND STEEL, JIANGSU PROVINCE/SHA-STEEL, CO. LTD.Inventors: Lei Wang, Han Ma, Ping Li
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Publication number: 20170175221Abstract: There is provided a high-carbon steel wire rod and a preparation method thereof. Wherein, the high-carbon steel wire rod comprising the following ingredients: C, Si, Mn, Cr, V, Ti and Fe. The high-carbon steel wire rod has satisfactory mechanical properties, including high strength with an average tensile strength of 1560 MPa as well as good plasticity with an average after-fracture shrinkage rate of 30% and an after-fracture elongation percentage larger than or equal to 9%, which can meet the performance requirements for producing 2300 MPa level pre-stressed steel strand.Type: ApplicationFiled: February 18, 2014Publication date: June 22, 2017Inventors: Lei WANG, Han MA, Ping LI
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Publication number: 20170113266Abstract: The present invention provides a sector-shaped section of a continuous casting machine for heavy reduction of a solidified terminal of a continuously cast slab and a heavy reduction method.Type: ApplicationFiled: January 9, 2017Publication date: April 27, 2017Inventors: Yonglin Kang, Xinhua Wang, Guoming Zhu, Han Ma, Jianchao Ma, Jinbo Qu, Hang Yu, Zhijun Zhang, Min Jiang, Zhigang Xu
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Publication number: 20170029919Abstract: The present invention relates to a steel rebar comprising the following ingredients: 0.005%-0.030% of C, 0.3%-0.6% of Si, 1.2%-2.5% of Mn, 0.01% or less of P, 0.01% or less of S, 8.0%-10.0% of Cr, 1.0%-3.0% of Mo, 0.2%-0.4% of Sn, 0.01%-0.05% of Rare Earth element, and the remainder being Fe and unavoidable impurities. The present invention also provides a production method of steel rebar. The steel rebar of the present invention has excellent comprehensive mechanical properties and corrosion resistance performance, while meeting the requirements of anti-knock, the service life in sea water of the steel rebar is increased, thus it can be widely used in reinforced concrete structures in ocean environment.Type: ApplicationFiled: June 27, 2014Publication date: February 2, 2017Applicant: Institute of Research of Iron and Steel, Jiangsu Province/Sha-Steel, Co. Ltd.Inventors: Jianchun ZHANG, Han MA, Wenke HUANG, Yang LI, Longfei ZUO
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Publication number: 20150307461Abstract: The present invention discloses compounds of Formula I: wherein the variables in Formula I are defined as described herein. Also disclosed are pharmaceutical compositions containing such compounds and methods for using the compounds of Formula I in the prevention or treatment of HCV infection.Type: ApplicationFiled: July 7, 2015Publication date: October 29, 2015Applicant: Hoffmann-La Roche Inc.Inventors: Joseph A. Bilotta, Zhi Chen, Elbert Chin, Qingjie Ding, Shawn D. Erickson, Stephen D. Gabriel, Klaus G. Klumpp, Han Ma, Eric Mertz, Jean-Marc Plancher, Robert J. Weikert