Patents by Inventor Kye Man LEE

Kye Man LEE 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: 11946125
    Abstract: A ferritic stainless steel with improved mechanical properties of weld zone is disclosed. The ferritic stainless steel includes, in percent (%) by weight of the entire composition, C: 0.005 to 0.02%, N: 0.005 to 0.02%, Cr: 11.0 to 13.0%, Ti: 0.16 to 0.3%, Nb: 0.1 to 0.3%, Al: 0.005 to 0.05%, the remainder of iron (Fe) and other inevitable impurities, and the ferritic stainless steel has a texture maximum strength of 30 or less in the {001} direction after welding.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: April 2, 2024
    Assignee: POSCO CO., LTD
    Inventors: Kye-Man Lee, Jae-Seok Park
  • Publication number: 20220396849
    Abstract: Disclosed is a ferritic stainless steel having improved magnetization including, in percent by weight (wt %), 0.01% or less (excluding 0) of C) 0.003% or less (excluding 0) of N, 15 to 18% of Cr, 0.3 to 1.0% of Mn, 0.2 to 0.3% of Si, 0.005% or less (excluding 0) of Al, 0.005% or less (excluding 0) of Ti, and the balance of Fe and inevitable impurities, and satisfying the following equation, (Ti+Al+8*(C+N)/Mn)?0.3??Equation (1) (wherein Ti, Al, C, N, and Mn denote amounts (wt %) of the respective elements).
    Type: Application
    Filed: November 18, 2020
    Publication date: December 15, 2022
    Applicant: POSCO
    Inventors: Kye-man Lee, Hyung-gu Kang
  • Publication number: 20220033939
    Abstract: A ferritic stainless steel with improved mechanical properties of weld zone is disclosed. The ferritic stainless steel includes, in percent (%) by weight of the entire composition, C: 0.005 to 0.02%, N: 0.005 to 0.02%, Cr: 11.0 to 13.0%, Ti: 0.16 to 0.3%, Nb: 0.1 to 0.3%, Al: 0.005 to 0.05%, the remainder of iron (Fe) and other inevitable impurities, and the ferritic stainless steel has a texture maximum strength of 30 or less in the {001} direction after welding.
    Type: Application
    Filed: August 23, 2019
    Publication date: February 3, 2022
    Inventors: Kye-Man Lee, Jae-Seok Park
  • Publication number: 20190316237
    Abstract: Disclosed herein are a ferritic stainless steel having excellent ridging properties and excellent surface quality of a final product by modifying a microstructure of a central area of a cross-section by further performing cold rolling before hot annealing. A ferritic stainless steel according to the present disclosure includes, by wt %, 0.005 to 0.1% of carbon (C), 0.01 to 2.0% of silicon (Si), 0.01 to 1.5% of manganese (Mn), 0.05% or less of phosphorus (P), 0.005% or less of sulfur (S), 10 to 30% of chromium (Cr), 0.005 to 0.1% of nitrogen (N), 0.005 to 0.2% of aluminum (Al), and the remainder of iron (Fe) and other impurities, wherein a ?max value is in the range of 20% to less than 50%, and a surface microgroove area ratio is 2.0% or less.
    Type: Application
    Filed: July 4, 2017
    Publication date: October 17, 2019
    Inventors: Soo Ho PARK, Kye Man LEE