Patents by Inventor Kwang-Geum Chin

Kwang-Geum Chin 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).

  • COLD ROLLED STEEL SHEET HAVING SUPERIOR FORMABILITY AND HIGH YIELD RATIO, PROCESS FOR PRODUCING THE SAME
    Publication number: 20090126837
    Abstract: Disclosed herein is a Nb—Ti composite IF steel in which fine precipitates, such as CuS precipitates, having a size of 0.2 ?m or less are distributed. The distribution of fine precipitates in the Nb—Ti composite IF steel enhances the yield strength and lowers the in-plane anisotropy index. The nanometer-sized precipitates allow the formation of minute crystal grains. As a result, dissolved carbon is present in a larger amount in the crystal grain boundaries than within the crystal grains, which is advantageous in terms of room-temperature non-aging properties and bake handenability.
    Type: Application
    Filed: May 3, 2006
    Publication date: May 21, 2009
    Applicant: POSCO
    Inventors: Jeong-Bong Yoon, Noi-Ha Cho, Jin-Hee Chung, Man-Young Park, Kwang-Geum Chin, Sang-Ho Han, Sung-Il Kim, Ho-Seok Kim