Patents by Inventor Minglei HAN

Minglei HAN 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).

  • Sintered neodymium-iron-boron magnet and preparation method thereof
    Patent number: 11984244
    Abstract: The present disclosure discloses a sintered neodymium-iron-boron magnet and a preparation method thereof. The sintered neodymium-iron-boron magnet includes the following raw materials in mass percentage: 1%-40% of an iron powder or a steel powder with a magnetic induction intensity of more than 1.2 T, not more than 10% of a praseodymium-neodymium metal hydride powder, and a remainder of a neodymium-iron-boron fine powder, wherein the mass percentages of the above raw materials add up to 100%. The preparation method includes: weighing the raw materials in mass percentage; mixing the weighed raw materials uniformly, and then subjecting to magnetic-field press molding, isostatic pressing, sintering and tempering to obtain the sintered neodymium-iron-boron magnet.
    Type: Grant
    Filed: November 20, 2021
    Date of Patent: May 14, 2024
    Assignees: Baotou Jinmeng Magnetic Materials Co., Ltd.
    Inventors: Yujun Zeng, Minglei Han, Zhaoyong Liu, Xueliang Zhang, Zhigang Xue, Quanjin Zeng, Yuxiang Dong, Junxing Zhao, Lan Feng, Ze Liu, Xia Zhang, Jialiang Zhang, Xiangjun Chen
  • SINTERED NEODYMIUM-IRON-BORON MAGNET AND PREPARATION METHOD THEREOF
    Publication number: 20220246337
    Abstract: The present disclosure discloses a sintered neodymium-iron-boron magnet and a preparation method thereof. The sintered neodymium-iron-boron magnet includes the following raw materials in mass percentage: 1%-40% of an iron powder or a steel powder with a magnetic induction intensity of more than 1.2 T, not more than 10% of a praseodymium-neodymium metal hydride powder, and a remainder of a neodymium-iron-boron fine powder, wherein the mass percentages of the above raw materials add up to 100%. The preparation method includes: weighing the raw materials in mass percentage; mixing the weighed raw materials uniformly, and then subjecting to magnetic-field press molding, isostatic pressing, sintering and tempering to obtain the sintered neodymium-iron-boron magnet.
    Type: Application
    Filed: November 20, 2021
    Publication date: August 4, 2022
    Inventors: Yujun ZENG, Minglei HAN, Zhaoyong LIU, Xueliang ZHANG, Zhigang XUE, Quanjin ZENG, Yuxiang DONG, Junxing ZHAO, Lan FENG, Ze LIU, Xia ZHANG, Jialiang ZHANG, Xiangjun CHEN