Patents by Inventor Jae-Kyu MIN

Jae-Kyu MIN 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).

  • Phosphate solution for zinc or zinc-based alloy plated steel sheet, and zinc or zinc-based alloy plated steel sheet using the same
    Patent number: 9957619
    Abstract: A phosphate solution for a zinc or zinc-based alloy plated steel sheet, and a zinc or zinc-based alloy plated steel sheet using the same are provided. The phosphate solution for a zinc or zinc-based alloy plated steel sheet contains a molybdenum (Mo) ion, a calcium (Ca) ion and a phosphate ion. A zinc or zinc-based alloy plated steel sheet includes a base steel sheet, a zinc-based or zinc alloy-based plating layer formed on the base steel sheet, and a phosphate film formed on the zinc-based or zinc alloy-based plating layer. The phosphate film contains a molybdenum compound, Ca and a phosphate. A pitting phenomenon occurring at the time of treating a steel sheet with a phosphate is prevented, and excellent corrosion resistance is exhibited on a phosphate film.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: May 1, 2018
    Assignee: POSCO
    Inventors: Young-Jin Kwak, Kyung-Hoon Nam, Yong-Hwa Jung, Tae-Yeob Kim, Dong-Yoeul Lee, Seok-Won Cho, Young-Ra Lee, Mun-Jong Eom, Woo-Sung Jung, Seok-Jun Hong, Jae-Kyu Min, Hong-Kyun Sohn
  • PHOSPHATE SOLUTION FOR ZINC OR ZINC-BASED ALLOY PLATED STEEL SHEET, AND ZINC OR ZINC-BASED ALLOY PLATED STEEL SHEET USING THE SAME
    Publication number: 20150329972
    Abstract: A phosphate solution for a zinc or zinc-based alloy plated steel sheet, and a zinc or zinc-based alloy plated steel sheet using the same are provided. The phosphate solution for a zinc or zinc-based alloy plated steel sheet contains a molybdenum (Mo) ion, a calcium (Ca) ion and a phosphate ion. A zinc or zinc-based alloy plated steel sheet includes a base steel sheet, a zinc-based or zinc alloy-based plating layer formed on the base steel sheet, and a phosphate film formed on the zinc-based or zinc alloy-based plating layer. The phosphate film contains a molybdenum compound, Ca and a phosphate. A pitting phenomenon occurring at the time of treating a steel sheet with a phosphate is prevented, and excellent corrosion resistance is exhibited on a phosphate film.
    Type: Application
    Filed: December 28, 2012
    Publication date: November 19, 2015
    Applicant: POSCO
    Inventors: Young-Jin KWAK, Kyung-Hoon NAM, Yong-Hwa JUNG, Tae-Yeob KIM, Dong-Yoeul LEE, Seok-Won CHO, Young-Ra LEE, Mun-Jong EOM, Woo-Sung JUNG, Seok-Jun HONG, Jae-Kyu MIN, Hong-Kyun SOHN