Patents by Inventor Hyeon Bae LEE

Hyeon Bae 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).

  • AUSTENITIC STAINLESS STEEL HAVING A LARGE AMOUNT OF UNIFROMLY DISTRIBUTED NANOMETER-SIZED PRECIPITATES AND PREPARING METHOD OF THE SAME
    Publication number: 20230117314
    Abstract: Austenitic stainless steel includes 16 to 26 wt % of chromium (Cr), 8 to 22 wt % of nickel (Ni), 0.02 to 0.1 wt % of carbon (C), 0.2 to 1 wt % of niobium (Nb), and 2 to 3.5 wt % of manganese (Mn), and has an austenite matrix, wherein a nanosized niobium carbide (NbC) is precipitated in the austenite matrix, and the nanosized niobium carbide is uniformly dispersed in the austenite matrix. The austenitic stainless steel may further include 0.5 to 1.5 wt % of molybdenum (Mo).
    Type: Application
    Filed: December 6, 2019
    Publication date: April 20, 2023
    Inventors: Changheui JANG, Jiho SHIN, Byeong Seo KONG, Hyeon Bae LEE, Chaewon JEONG, Hyun Woo KOO
  • Austenitic stainless steel containing niobium and manufacturing method of the same
    Patent number: 11608542
    Abstract: The austenitic stainless steel containing niobium according to an exemplary embodiment of the present invention includes: 16 to 26 wt. % of chromium (Cr), 8 to 22 wt. % of nickel (Ni), 0.02 to 0.1 wt. % of carbon (C), 0.2 to 1 wt. % of niobium (Nb), 0.015 to 0.025 wt. % of titanium (Ti), 0.004 to 0.01 wt. % of nitrogen (N), and 0.5 to 2 wt. % of manganese (Mn), wherein the austenitic stainless steel containing niobium has an austenitic matrix structure, a fine niobium carbide and a fine titanium nitride are precipitated in the austenitic matrix structure, and the fine niobium carbide is uniformly dispersed in the austenitic matrix structure.
    Type: Grant
    Filed: November 30, 2021
    Date of Patent: March 21, 2023
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Chang-Heui Jang, Ji Ho Shin, Byeong Seo Kong, Ho-Sub Kim, Hyeon Bae Lee
  • Austenitic stainless steel containing niobium and manufacturing method of the same
    Patent number: 11326222
    Abstract: The austenitic stainless steel containing niobium according to an exemplary embodiment of the present invention includes: 16 to 26 wt. % of chromium (Cr), 8 to 22 wt. % of nickel (Ni), 0.02 to 0.1 wt. % of carbon (C), 0.2 to 1 wt. % of niobium (Nb), 0.015 to 0.025 wt. % of titanium (Ti), 0.004 to 0.01 wt. % of nitrogen (N), and 0.5 to 2 wt. % of manganese (Mn), wherein the austenitic stainless steel containing niobium has an austenitic matrix structure, a fine niobium carbide and a fine titanium nitride are precipitated in the austenitic matrix structure, and the fine niobium carbide is uniformly dispersed in the austenitic matrix structure.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: May 10, 2022
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Chang-Heui Jang, Ji Ho Shin, Byeong Seo Kong, Ho-Sub Kim, Hyeon Bae Lee
  • AUSTENITIC STAINLESS STEEL CONTAINING NIOBIUM AND MANUFACTURING METHOD OF THE SAME
    Publication number: 20220090229
    Abstract: The austenitic stainless steel containing niobium according to an exemplary embodiment of the present invention includes: 16 to 26 wt. % of chromium (Cr), 8 to 22 wt. % of nickel (Ni), 0.02 to 0.1 wt. % of carbon (C), 0.2 to 1 wt. % of niobium (Nb), 0.015 to 0.025 wt. % of titanium (Ti), 0.004 to 0.01 wt. % of nitrogen (N), and 0.5 to 2 wt. % of manganese (Mn), wherein the austenitic stainless steel containing niobium has an austenitic matrix structure, a fine niobium carbide and a fine titanium nitride are precipitated in the austenitic matrix structure, and the fine niobium carbide is uniformly dispersed in the austenitic matrix structure.
    Type: Application
    Filed: November 30, 2021
    Publication date: March 24, 2022
    Inventors: Chang-Heui JANG, Ji Ho SHIN, Byeong Seo KONG, Ho-Sub KIM, Hyeon Bae LEE
  • AUSTENITIC STAINLESS STEEL CONTAINING NIOBIUM AND MANUFACTURING METHOD OF THE SAME
    Publication number: 20210348248
    Abstract: The austenitic stainless steel containing niobium according to an exemplary embodiment of the present invention includes: 16 to 26 wt. % of chromium (Cr), 8 to 22 wt. % of nickel (Ni), 0.02 to 0.1 wt. % of carbon (C), 0.2 to 1 wt. % of niobium (Nb), 0.015 to 0.025 wt. % of titanium (Ti), 0.004 to 0.01 wt. % of nitrogen (N), and 0.5 to 2 wt. % of manganese (Mn), wherein the austenitic stainless steel containing niobium has an austenitic matrix structure, a fine niobium carbide and a fine titanium nitride are precipitated in the austenitic matrix structure, and the fine niobium carbide is uniformly dispersed in the austenitic matrix structure.
    Type: Application
    Filed: November 28, 2018
    Publication date: November 11, 2021
    Inventors: Chang-Heui JANG, Ji Ho SHIN, Byeong Seo KONG, Ho-Sub KIM, Hyeon Bae LEE