Patents by Inventor Sumin Na

Sumin Na 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: 11249060
    Abstract: The present invention relates to a method for quantitatively analyzing Cl, remaining after synthesis, in zinc ferrite synthesized using chloride precursors such as zinc chloride and iron chloride, and provides a method capable of using, in a quantitative analysis method of Cl remaining after synthesis of an inorganic material, AQF-IC, which has been used only in the quantitative analysis of an organic sample since gaseous Cl, discharged after burning zinc ferrite in an automatic quick furnace (AQF) by using an Sn capsule and tungsten oxide (WO3), is analyzed through ion chromatography (IC).
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: February 15, 2022
    Inventors: Sangwoo Kim, Hyun Kyung Yoon, Sumin Na, Jieun Kim, Hyun Woo Nho
  • Publication number: 20200333303
    Abstract: The present invention relates to a method for quantitatively analyzing Cl, remaining after synthesis, in zinc ferrite synthesized using chloride precursors such as zinc chloride and iron chloride, and provides a method capable of using, in a quantitative analysis method of Cl remaining after synthesis of an inorganic material, AQF-IC, which has been used only in the quantitative analysis of an organic sample since gaseous Cl, discharged after burning zinc ferrite in an automatic quick furnace (AQF) by using an Sn capsule and tungsten oxide (WO3), is analyzed through ion chromatography (IC).
    Type: Application
    Filed: July 16, 2018
    Publication date: October 22, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Sangwoo Kim, Hyun Kyung Yoon, Sumin Na, Jieun Kim, Hyun Woo Nho
  • Publication number: 20200166452
    Abstract: A method for quantitative analysis of hydrogen gas generated due to the decomposition of Si—OH (silanol) in porous silica, which is a support of a metallocene catalyst is provided. The analysis enables the measurement of the content of hydrogen present in trace amounts in silica by employing an inert gas fusion-infrared absorption (IGFIA) method under specific pressure and temperature conditions.
    Type: Application
    Filed: January 16, 2019
    Publication date: May 28, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Sumin Na, Jieun Kim, Sunah Shin, Min Hwan Jung