Patents by Inventor Junjie Hao

Junjie Hao 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).

  • Patent number: 11821063
    Abstract: A high-strength steel allowing low-temperature welding and high-heat input welding and a production method thereof are provided, which belongs to the technical field of steel production. The high-strength steel includes the following chemical components by mass fraction: 0.03-0.16% of C, 0.05-0.5% of Si, 1.0-1.9% of Mn, 0.002-0.02% of P, 0.001-0.01% of S, 0.005-0.07% of Al, 0.005-0.04% of Ti, 0.1-0.5% of Cr, 0.0005-0.005% of B, 0.002-0.01% of Mg+Zr, 0.001-0.008% of O, 0.004-0.01% of N, and the balance of Fe and residual elements. Magnesium and zirconium are added to form magnesium/zirconium oxide, titanium and boron are added to form titanium/boron nitride, and the two types of precipitates work synergistically to improve the microstructure of a heat-affected zone. The method optimizes the chemical composition and production process of existing high-strength steel.
    Type: Grant
    Filed: July 29, 2022
    Date of Patent: November 21, 2023
    Assignee: NORTHEASTERN UNIVERSITY
    Inventors: Chao Wang, Junjie Hao, Guo Yuan, Jian Kang, Zhenlei Li, Guodong Wang
  • Publication number: 20230175105
    Abstract: A high-strength steel allowing low-temperature welding and high-heat input welding and a production method thereof are provided, which belongs to the technical field of steel production. The high-strength steel includes the following chemical components by mass fraction: 0.03-0.16% of C, 0.05-0.5% of Si, 1.0-1.9% of Mn, 0.002-0.02% of P, 0.001-0.01% of S, 0.005-0.07% of A1, 0.005-0.04% of Ti, 0.1-0.5% of Cr, 0.0005-0.005% of B, 0.002-0.01% of Mg+Zr, 0.001-0.008% of O, 0.004-0.01% of N, and the balance of Fe and residual elements. Magnesium and zirconium are added to form magnesium/zirconium oxide, titanium and boron are added to form titanium/boron nitride, and the two types of precipitates work synergistically to improve the microstructure of a heat-affected zone. The method optimizes the chemical composition and production process of existing high-strength steel.
    Type: Application
    Filed: July 29, 2022
    Publication date: June 8, 2023
    Applicant: Northeastern University
    Inventors: Chao WANG, Junjie HAO, Guo YUAN, Jian KANG, Zhenlei LI, Guodong WANG
  • Patent number: 11623999
    Abstract: A method for preparing a fluorescent polarizing film based on directional arrangement of quantum rods. In the method, an inkjet printing technology is used for printing quantum-rod ink having proper viscosity and surface tension on a substrate according to a preset pattern, and directionally arranging quantum rods to obtain a fluorescent polarizing film. The diameter and spacing of fluorescent lines obtained by the method can be controlled and adjusted according to parameter conditions such as a needle aperture, a printing speed, and a preset pattern. The prepared transparent fluorescent film with directionally arranged quantum rods has a high degree of polarization, can be prepared on a flexible substrate in a normal temperature environment, and has wide applicability.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: April 11, 2023
    Assignee: SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
    Inventors: Xiaowei Sun, Kai Wang, Haochen Liu, Ziming Zhou, Zhe Zhang, Junjie Hao, Zuoliang Wen
  • Patent number: 11401627
    Abstract: Disclosed is a method for preparing a quantum rod/polymer fiber membrane by using electrospinning technique. The method comprises the following steps: (1) preparing a quantum rod solution; (2) preparing a polymer solution, and adding the quantum rod solution obtained in step (1) into the polymer solution so as to form an electrospinning precursor solution with a volume concentration of the quantum rods of 5%-80%; and (3) adding the electrospinning precursor solution into an electrospinning device, regulating the voltage of a generator and the receiving distance, and then performing electrospinning to prepare the quantum rod/polymer fiber membrane. By adjusting the concentration of the quantum rod solution and parameters in the electrospinning process, the method realizes directional arrangements of the quantum rods in the electrospinning process, thereby obtaining the quantum rod/polymer fiber membrane with high degree of polarization performance.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: August 2, 2022
    Assignee: SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
    Inventors: Kai Wang, Ziming Zhou, Jing Qin, Zuoliang Wen, Shang Li, Junjie Hao, Wei Chen, Xiaowei Sun
  • Publication number: 20200224049
    Abstract: A method for preparing a fluorescent polarizing film based on directional arrangement of quantum rods. In the method, an inkjet printing technology is used for printing quantum-rod ink having proper viscosity and surface tension on a substrate according to a preset pattern, and directionally arranging quantum rods to obtain a fluorescent polarizing film. The diameter and spacing of fluorescent lines obtained by the method can be controlled and adjusted according to parameter conditions such as a needle aperture, a printing speed, and a preset pattern. The prepared transparent fluorescent film with directionally arranged quantum rods has a high degree of polarization, can be prepared on a flexible substrate in a normal temperature environment, and has wide applicability.
    Type: Application
    Filed: September 13, 2017
    Publication date: July 16, 2020
    Applicant: SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
    Inventors: Xiaowei Sun, Kai Wang, Haochen Liu, Ziming Zhou, Zhe Zhang, Junjie Hao, Zuoliang Wen
  • Publication number: 20190249337
    Abstract: Disclosed is a method for preparing a quantum rod/polymer fiber membrane by using electrospinning technique. The method comprises the following steps: (1) preparing a quantum rod solution; (2) preparing a polymer solution, and adding the quantum rod solution obtained in step (1) into the polymer solution so as to form an electrospinning precursor solution with a volume concentration of the quantum rods of 5%-80%; and (3) adding the electrospinning precursor solution into an electrospinning device, regulating the voltage of a generator and the receiving distance, and then performing electrospinning to prepare the quantum rod/polymer fiber membrane. By adjusting the concentration of the quantum rod solution and parameters in the electrospinning process, the method realizes directional arrangements of the quantum rods in the electrospinning process, thereby obtaining the quantum rod/polymer fiber membrane with high degree of polarization performance.
    Type: Application
    Filed: November 15, 2016
    Publication date: August 15, 2019
    Applicant: SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
    Inventors: Kai Wang, Ziming Zhou, Jing Qin, Zuoliang Wen, Shang Li, Junjie Hao, Wei Chen, Xiaowei Sun
  • Patent number: 9887326
    Abstract: The invention discloses a quantum dot composite fluorescent particle including quantum dots, a mesoporous material, and a water-blocking and oxygen-blocking material. The quantum dots are distributed in the mesoporous material, and the water-blocking and oxygen-blocking material is filled in the gaps between the quantum dots and the mesoporous material. The quantum dot composite fluorescent particles may also include metal nanoparticles distributed within the mesoporous material and/or a blocking layer coating the outer surface of the mesoporous material. These features greatly improve the water and oxygen blocking properties and thus, the stability of the quantum dot composite fluorescent particles. The metal nanoparticles help the quantum dots capture more blue lights due to the localized surface resonance plasma and consequently improve the utilization ratio of the blue lights. The quantum dot composite fluorescent particle can then be integrated into an LED module to improve its service life.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: February 6, 2018
    Assignee: Tianjin Zhonghuan Quantum Tech Co., Ltd.
    Inventors: Kai Wang, Wei Chen, Junjie Hao, Rui Lu, Lei Yang, Dun Bian, Chunfeng Li, Xiaowei Sun
  • Patent number: D860800
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: September 24, 2019
    Inventor: Junjie Hao
  • Patent number: D869229
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: December 10, 2019
    Inventor: Junjie Hao
  • Patent number: D869230
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: December 10, 2019
    Inventor: Junjie Hao
  • Patent number: D890564
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: July 21, 2020
    Inventor: Junjie Hao
  • Patent number: D907959
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: January 19, 2021
    Assignee: Shenzhen Mlife Household Products Co., Ltd.
    Inventor: Junjie Hao
  • Patent number: D933424
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: October 19, 2021
    Assignee: Shenzhen Mlife Household Products Co., Ltd.
    Inventor: Junjie Hao
  • Patent number: D933425
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: October 19, 2021
    Assignee: Shenzhen Mlife Household Products Co., Ltd.
    Inventor: Junjie Hao
  • Patent number: D939887
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: January 4, 2022
    Assignee: Shenzhen Mlife Household Products Co., Ltd.
    Inventor: Junjie Hao
  • Patent number: D942209
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: February 1, 2022
    Assignee: Shenzhen Mlife Household Products Co., Ltd.
    Inventor: Junjie Hao
  • Patent number: D943342
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: February 15, 2022
    Assignee: Shenzhen MLife Household Products Co., Ltd.
    Inventor: Junjie Hao
  • Patent number: D955817
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: June 28, 2022
    Assignee: Shenzhen Mlife Household Products Co., Ltd.
    Inventor: Junjie Hao
  • Patent number: D1008729
    Type: Grant
    Filed: February 2, 2021
    Date of Patent: December 26, 2023
    Assignee: Shenzhen Mlife Household Products Co., Ltd
    Inventor: Junjie Hao
  • Patent number: D1053009
    Type: Grant
    Filed: September 29, 2022
    Date of Patent: December 3, 2024
    Inventor: Junjie Hao