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).

  • Publication number: 20260110045
    Abstract: 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: Application
    Filed: September 28, 2023
    Publication date: April 23, 2026
    Inventors: Han MA, Chunjie LU
  • Publication number: 20260095411
    Abstract: 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: Application
    Filed: October 2, 2024
    Publication date: April 2, 2026
    Inventors: Lai Sheng MIAO, Han MA, Jayme SNYDER
  • Publication number: 20260014607
    Abstract: 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: Application
    Filed: May 9, 2023
    Publication date: January 15, 2026
    Inventors: Jianchao MA, Kui SHEN, Han MA, Qiang LI
  • Patent number: 12398450
    Abstract: 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: Grant
    Filed: August 19, 2019
    Date of Patent: August 26, 2025
    Assignees: 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
  • Patent number: 12378629
    Abstract: 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: Grant
    Filed: October 17, 2019
    Date of Patent: August 5, 2025
    Assignees: 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
  • Patent number: 12378622
    Abstract: 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: Grant
    Filed: July 22, 2019
    Date of Patent: August 5, 2025
    Assignees: 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
  • Publication number: 20250215542
    Abstract: 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: Application
    Filed: July 27, 2023
    Publication date: July 3, 2025
    Applicants: 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
  • Publication number: 20250207230
    Abstract: 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: Application
    Filed: January 18, 2023
    Publication date: June 26, 2025
    Applicants: 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
  • Publication number: 20250178134
    Abstract: 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: Application
    Filed: September 22, 2023
    Publication date: June 5, 2025
    Inventors: Na WANG, Yu ZHANG, Han MA
  • Publication number: 20250137081
    Abstract: 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: Application
    Filed: July 12, 2022
    Publication date: May 1, 2025
    Inventors: Jiaqi ZHAO, Lianbing ZHANG, Jianchao MA, Han MA
  • Publication number: 20240068064
    Abstract: 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: Application
    Filed: April 12, 2021
    Publication date: February 29, 2024
    Applicants: 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
  • Publication number: 20230416865
    Abstract: 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: Application
    Filed: November 12, 2020
    Publication date: December 28, 2023
    Applicants: 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
  • Publication number: 20220340996
    Abstract: 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: Application
    Filed: October 17, 2019
    Publication date: October 27, 2022
    Inventors: CHANGDONG ZOU, HAN MA, JIAQI ZHAO, KUI SHEN, XIAOFENG CAI, YIXIN SHI, YONGLIN HUANG
  • Publication number: 20220243310
    Abstract: 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: Application
    Filed: August 19, 2019
    Publication date: August 4, 2022
    Inventors: XIANJUN HU, JINXI FAN, HAN MA, FENG FANG, LONG CHENG
  • Publication number: 20220220573
    Abstract: 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: Application
    Filed: July 22, 2019
    Publication date: July 14, 2022
    Inventors: YU ZHANG, HAN MA, YUN ZHOU, HUANDE CHEN
  • Patent number: 10316386
    Abstract: 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: Grant
    Filed: February 18, 2014
    Date of Patent: June 11, 2019
    Assignee: INSTITUTE OF RESEARCH OF IRON AND STEEL, JIANGSU PROVINCE/SHA-STEEL, CO. LTD.
    Inventors: Lei Wang, Han Ma, Ping Li
  • Publication number: 20170175221
    Abstract: 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: Application
    Filed: February 18, 2014
    Publication date: June 22, 2017
    Inventors: Lei WANG, Han MA, Ping LI
  • Publication number: 20170113266
    Abstract: 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: Application
    Filed: January 9, 2017
    Publication date: April 27, 2017
    Inventors: Yonglin Kang, Xinhua Wang, Guoming Zhu, Han Ma, Jianchao Ma, Jinbo Qu, Hang Yu, Zhijun Zhang, Min Jiang, Zhigang Xu
  • Publication number: 20170029919
    Abstract: 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: Application
    Filed: June 27, 2014
    Publication date: February 2, 2017
    Applicant: Institute of Research of Iron and Steel, Jiangsu Province/Sha-Steel, Co. Ltd.
    Inventors: Jianchun ZHANG, Han MA, Wenke HUANG, Yang LI, Longfei ZUO
  • Publication number: 20150307461
    Abstract: 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: Application
    Filed: July 7, 2015
    Publication date: October 29, 2015
    Applicant: 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