Patents by Inventor Xiaoting Zhao
Xiaoting Zhao 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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Patent number: 11957996Abstract: Disclosed is a microwave chemical method for totally extracting fluorine and rare earth from bastnaesite concentrate, including: alkaline conversion defluorination of bastnaesite through microwave irradiation, microwave-assisted leaching of fluorine, solid-liquid separation of leaching solution and microwave-assisted leaching of rare earth. The rare earth hydrochloric acid solution for leaching contains no fluorine ion, so that the fluorine interference of subsequent processes such as impurity removal can be completely avoided; the fluorine and the rare earth are leached with microwaves, which does not need the stirring, so that the automatic control is easy to implement; the fluorine and rare earth leaching speed is high, the leaching time is short and the complete leaching of fluorine and little residual alkali in the slag can be realized by two-time leaching; and no fluorine-containing waste water is discharged, and the total extraction of the rare earth can be realized by one-time leaching.Type: GrantFiled: April 26, 2021Date of Patent: April 16, 2024Assignee: Sichuan Normal UniversityInventors: Shilin Zhao, Hongcheng Zhang, Jun Ma, Yang Liao, Liyang Han, Meng Jiang, Hao Huang, Chaoqun Li, Xiaoting Li, Hongyan Shang
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Publication number: 20220277375Abstract: Methods, systems, and apparatuses, including computer programs encoded on a computer storage medium, that rank items based on user interactions within the same web session. The method includes: providing a first content page for display on a client device; receiving a set of user interactions with one or more items of the first plurality of items; determining an affinity score representing a user interest in the attribute based on the set of user interactions; updating an attribute repository storing a second plurality of attributes and corresponding current affinity scores; identifying a second plurality of items and a corresponding third plurality of attributes; ranking the second plurality of items; and providing a second content page for display on the client device.Type: ApplicationFiled: February 28, 2022Publication date: September 1, 2022Inventors: Congzhe Su, Amey Barapatre, Xiaoting Zhao, Diane Hu, Xu Liu
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Patent number: 11180836Abstract: Provided is a low-yield-ratio high-strength-toughness thick steel plate with excellent low-temperature impact toughness, which comprises: 0.05%-0.11% of C, 0.10%-0.40% of Si, 1.60%-2.20% of Mn, S?0.003%, 0.20-0.70% of Cr, 0.20%-0.80% of Mo, 0.02%-0.06% of Nb, 3.60%-5.50% of Ni, 0.01%-0.05% of Ti, 0.01%-0.08% of Al, 0<N?0.0060%, 0<O?0.0040%, and 0<Ca?0.0045%, with the balance being Fe and inevitable impurities; in addition, Ni+Mn?5.5 is also satisfied. The manufacturing method for the above-mentioned steel plate comprises smelting, casting, heating, two-stage rolling, quenching, cooling after quenching, and tempering.Type: GrantFiled: December 8, 2015Date of Patent: November 23, 2021Assignee: BAOSHAN IRON & STEEL CO., LTD.Inventors: Sixin Zhao, Liandeng Yao, Xiaobo Wang, Xiaoting Zhao
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Patent number: 10865458Abstract: A bulletproof steel plate with a tensile strength of 2000 MPa grade and a Brinell Hardness of 600 grade and a manufacturing method thereof, characterized by that the chemical elements in mass percentage thereof being: 0.35-0.45% of C, 0.80-1.60% of Si, 0.3-1.0% of Mn, 0.02-0.06% of Al, 0.3-1.2% of Ni, 0.30-1.00% of Cr, 0.20-0.80% of Mo, 0.20-0.60% of Cu, 0.01-0.05% of Ti, 0.001-0.003% of B, and the balance being Fe and inevitable impurities. The tensile strength of the steel plate can reach a grade of 2000 MPa and its Brinell Hardness can reach a grade of 600.Type: GrantFiled: August 25, 2016Date of Patent: December 15, 2020Assignee: Baoshan Iron & Steel Co., Ltd.Inventors: Xiaoting Zhao, Fengbin Li, Liandeng Yai, Hongbin Li
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Patent number: 10851435Abstract: A dual-hardness clad steel plate. One surface of the steel plate is a high-hardness layer, the other surface of the steel plate is a low-hardness layer, and a combination of atoms is achieved between the high-hardness layer and the low-hardness layer by rolling bonding, wherein Mn13 steel is adopted for the low-hardness layer, and the Brinell hardness of the high-hardness layer is greater than 600. Further disclosed is a production method of the dual-hardness clad steel plate, comprising: 1) respectively preparing a high-hardness layer slab and a low-hardness layer slab; 2) assembling: preprocessing combined faces of the slabs, carrying out peripheral welded sealing on joint faces of the slabs, and carrying out vacuumizing treatment on a composite slab after welded sealing; 3) heating; 4) carrying out composite rolling; 5) cooling; and 6) carrying out thermal treatment, wherein the heating temperature is 1050-1100° C.Type: GrantFiled: December 14, 2016Date of Patent: December 1, 2020Assignee: Baoshan Iron & Steel Co., Ltd.Inventors: Xiaoting Zhao, Bao Yan, Liandeng Yao, Sihai Jiao, Hongbin Li
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Publication number: 20180363093Abstract: A dual-hardness clad steel plate. One surface of the steel plate is a high-hardness layer, the other surface of the steel plate is a low-hardness layer, and a combination of atoms is achieved between the high-hardness layer and the low-hardness layer by rolling bonding, wherein Mn13 steel is adopted for the low-hardness layer, and the Brinell hardness of the high-hardness layer is greater than 600. Further disclosed is a production method of the dual-hardness clad steel plate, comprising: 1) respectively preparing a high-hardness layer slab and a low-hardness layer slab; 2) assembling: preprocessing combined faces of the slabs, carrying out peripheral welded sealing on joint faces of the slabs, and carrying out vacuumizing treatment on a composite slab after welded sealing; 3) heating; 4) carrying out composite rolling; 5) cooling; and 6) carrying out thermal treatment, wherein the heating temperature is 1050-1100° C.Type: ApplicationFiled: December 14, 2016Publication date: December 20, 2018Applicant: BAOSHAN IRON & STEEL CO., LTD.Inventors: Xiaoting ZHAO, Bo YAN, Liandeng YAO, Sihai JIAO, Hongbin LI
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Publication number: 20180265942Abstract: A bulletproof steel plate with a tensile strength of 2000 MPa grade and a Brinell Hardness of 600 grade and a manufacturing method thereof, characterized by that the chemical elements in mass percentage thereof being: 0.35-0.45% of C, 0.80-1.60% of Si, 0.3-1.0% of Mn, 0.02-0.06% of Al, 0.3-1.2% of Ni, 0.30-1.00% of Cr, 0.20-0.80% of Mo, 0.20-0.60% of Cu, 0.01-0.05% of Ti, 0.001-0.003% of B, and the balance being Fe and inevitable impurities. The tensile strength of the steel plate can reach a grade of 2000 MPa and its Brinell Hardness can reach a grade of 600.Type: ApplicationFiled: August 25, 2016Publication date: September 20, 2018Applicant: BAOSHAN IRON & STEEL CO., LTD.Inventors: Xiaoting ZHAO, Fengbin LI, Liandeng YAI, Hongbin LI
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Publication number: 20180073116Abstract: Provided is a low-yield-ratio high-strength-toughness thick steel plate with excellent low-temperature impact toughness, which comprises: 0.05%-0.11% of C, 0.10%-0.40% of Si, 1.60%-2.20% of Mn, S?0.003%, 0.20-0.70% of Cr, 0.20%-0.80% of Mo, 0.02%-0.06% of Nb, 3.60%-5.50% of Ni, 0.01%-0.05% of Ti, 0.01%-0.08% of Al, 0<N?0.0060%, 0<O?0.0040%, and 0<Ca?0.0045%, with the balance being Fe and inevitable impurities; in addition, Ni+Mn?5.5 is also satisfied. The manufacturing method for the above-mentioned steel plate comprises smelting, casting, heating, two-stage rolling, quenching, cooling after quenching, and tempering.Type: ApplicationFiled: December 8, 2015Publication date: March 15, 2018Applicant: BAOSHAN IRON & STEEL CO., LTD.Inventors: Sixin Zhao, Liandeng Yao, Xiaobo Wang, Xiaoting Zhao
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Patent number: 8702876Abstract: The present invention provides a steel plate having a low welding crack susceptibility and a yield strength of 800 MPa and a manufacturing method for the same. The steel plate having a low welding crack susceptibility comprises the following chemical components (wt. %: percent by weight): C: 0.03-0.08 wt. %, Si: 0.05-0.70 wt. %, Mn: 1.30-2.20 wt. %, Mo: 0.10-0.30 wt. %, Nb: 0.03-0.10 wt. %, V: 0.03-0.45 wt. %, Ti: 0.002-0.040 wt. %, Al: 0.02-0.04 wt. %, B: 0.0010-0.0020 wt. %, the balance being Fe and unavoidable impurities, and the welding crack susceptibility index meets the following formula: Pcm?0.20%. The thermo-mechanical controlled rolling and cooling processes is used to obtain an ultrafine bainite batten matrix structure, which increases the intensity, plasticity and toughness of the steel plate. The steel plate with a low welding crack susceptibility of the present invention has a yield strength of greater than 800 MPa, a tensile strength of greater than 900 MPa, a Charpy impact energy Akv (?20° C.Type: GrantFiled: October 24, 2008Date of Patent: April 22, 2014Assignee: Boashan Iron & Steel Co., Ltd.Inventors: Liandeng Yao, Xiaoting Zhao, Sixin Zhao
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Publication number: 20100032062Abstract: The present invention provides a steel plate having a low welding crack susceptibility and a yield strength of 800 MPa and a manufacturing method for the same. The steel plate having a low welding crack susceptibility comprises the following chemical components (wt. %: percent by weight): C: 0.03-0.08 wt. %, Si: 0.05-0.70 wt. %, Mn: 1.30-2.20 w.t %, Mo: 0.10-0.30 wt. %, Nb: 0.03-0.10 wt. %, V: 0.03-0.45 wt. %, Ti: 0.002-0.040 wt. %, Al: 0.02-0.04 wt. %, B: 0.0010-0.0020 wt. %, the balance being Fe and unavoidable impurities, and the welding crack susceptibility index meets the following formula: Pcm?0.20%. The thermo-mechanical controlled rolling and cooling processes is used to obtain an ultrafine bainite batten matrix structure, which increases the intensity, plasticity and toughness of the steel plate. The steel plate with a low welding crack susceptibility of the present invention has a yield strength of greater than 800 MPa, a tensile strength of greater than 900 MPa, a Charpy impact energy Akv (?20° C.Type: ApplicationFiled: October 24, 2008Publication date: February 11, 2010Applicant: BAOSHAN IRON & STEEL CO., LTD.Inventors: Liandeng Yao, Xiaoting Zhao, Sixin Zhao
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Patent number: D950737Type: GrantFiled: August 19, 2020Date of Patent: May 3, 2022Assignee: SHENZHEN QUALITY MEDICAL TECHNOLOGY CO., LTD.Inventor: Xiaoting Zhao
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Patent number: D975840Type: GrantFiled: September 15, 2021Date of Patent: January 17, 2023Assignee: DONGGUAN QUANDING MEDICAL SUPPLIES CO., LTDInventor: Xiaoting Zhao