Patents by Inventor Min Ji PYO

Min Ji PYO 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).

  • Iron oxide magnetic powder and manufacturing method therefor
    Patent number: 11657935
    Abstract: The present invention relates to a method for producing a magnetic powder, including: preparing a precursor solution containing an iron precursor and a silica precursor; spraying the precursor solution to form iron/silica precursor droplets; drying the iron/silica precursor droplets to produce iron/silica precursor particles; and heat treating the iron/silica precursor particles to produce an iron oxide/silica composite powder in which iron oxide particles are embedded in a silica matrix. The present invention also relates to a magnetic powder produced by the method. The present invention may provide an iron oxide magnetic powder that does not use rare earth elements and a method for producing the same.
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: May 23, 2023
    Assignee: KOREA INSTITUTE OF MATERIALS SCIENCE
    Inventors: Youn Kyoung Baek, Jung Goo Lee, Kyung Min Kim, Young Kuk Kim, Min Ji Pyo
  • IRON OXIDE MAGNETIC POWDER AND MANUFACTURING METHOD THEREFOR
    Publication number: 20210241950
    Abstract: The present invention relates to a method for producing a magnetic powder, including: preparing a precursor solution containing an iron precursor and a silica precursor; spraying the precursor solution to form iron/silica precursor droplets; drying the iron/silica precursor droplets to produce iron/silica precursor particles; and heat treating the iron/silica precursor particles to produce an iron oxide/silica composite powder in which iron oxide particles are embedded in a silica matrix. The present invention also relates to a magnetic powder produced by the method. The present invention may provide an iron oxide magnetic powder that does not use rare earth elements and a method for producing the same.
    Type: Application
    Filed: July 17, 2019
    Publication date: August 5, 2021
    Inventors: Youn Kyoung BAEK, Jung Goo LEE, Kyung Min KIM, Young Kuk KIM, Min Ji PYO