Patents by Inventor Byeong-Goo Kim

Byeong-Goo Kim 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).

  • Method for manufacturing grain-oriented electrical steel sheet having excellent magnetic properties
    Patent number: 9663839
    Abstract: Provided is a method for manufacturing a grain-oriented electrical steel sheet, the method comprising: heating a grain-oriented electrical steel sheet slab; hot-rolling the heated slab; optionally annealing the hot-rolled steel sheet; subjecting the resulting steel sheet to one cold rolling or two or more cold rollings with intermediate annealing therebetween; subjecting the cold-rolled steel sheet to primary recrystallization annealing; and subjecting the annealed steel sheet to secondary recrystallization annealing, wherein the primary recrystallization annealing sequentially comprises an ultra-rapid heating process of heating the steel sheet at an average heating rate of 300° C./sec or higher, a rapid heating process of heating the steel sheet at a lower average heating rate than the average heating rate of the ultra-rapid heating process, but not lower than 100° C.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: May 30, 2017
    Assignee: POSCO
    Inventors: Hyung-Don Joo, Chang-Soo Kim, Jong-Tae Park, Jong-Ho Park, Byeong-Goo Kim, Jin-Wook Seo
  • Method for Manufacturing Grain-Oriented Electrical Steel Sheets Having Excellent Magnetic Properties
    Publication number: 20130306202
    Abstract: Provided is a method for manufacturing a grain-oriented electrical steel sheet, the method comprising: heating a grain-oriented electrical steel sheet slab; hot-rolling the heated slab; optionally annealing the hot-rolled steel sheet; subjecting the resulting steel sheet to one cold rolling or two or more cold rollings with intermediate annealing therebetween; subjecting the cold-rolled steel sheet to primary recrystallization annealing; and subjecting the annealed steel sheet to secondary recrystallization annealing, wherein the primary recrystallization annealing sequentially comprises an ultra-rapid heating process of heating the steel sheet at an average heating rate of 300° C./sec or higher, a rapid heating process of heating the steel sheet at a lower average heating rate than the average heating rate of the ultra-rapid heating process, but not lower than 100° C.
    Type: Application
    Filed: December 16, 2011
    Publication date: November 21, 2013
    Applicant: POSCO
    Inventors: Hyung-Don Joo, Chang-Soo Kim, Jong-Tae Park, Jong-Ho Park, Byeong-Goo Kim, Jin-Wook Seo