Patents by Inventor Sun-Mi Kwoun

Sun-Mi Kwoun 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).

  • Publication number: 20140216606
    Abstract: The present invention relates to a non-oriented electrical steel strip, which is used as a core for electrical devices such as motors and transformers, and a production method thereof. In accordance with one embodiment of the invention, there is provided a method for producing a (100) [0vw] non-oriented electrical steel strip having excellent magnetic properties, in which a slab having a composition comprising 0.0001-0.035 wt % of S and the balance of Fe and inevitable impurities, thereby showing a ferrite structure throughout the entire temperature range, is hot-rolled, pickled and cold-rolled, and the cold-rolled steel strip is annealed so that the selective growth of (100) grains on the surface of the cold-rolled steel strip occurs and the surface of the annealed steel strip is composed of the (100) [0vw] orientation.
    Type: Application
    Filed: January 17, 2013
    Publication date: August 7, 2014
    Inventors: Yoon-Jung Heo, Nam-Hoe Heo, Kyoung-Soon Park, Dong-Hoe Heo, Sun-Mi Kwoun, Hyuk-Ki Kwoun