Patents by Inventor Yong Seok BAEK

Yong Seok BAEK 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).

  • Corrugated steel pipe and method for manufacturing the same
    Patent number: 9856999
    Abstract: A corrugated steel pipe is disclosed. The corrugated steel pipe comprises a plurality of unit steel pipes, which are continuous in the axial direction. Each unit steel pipe comprises a first cylindrical pipe obtained by bending a first unit steel plate into a cylindrical shape, both ends of the first unit steel plate abutting each other and forming a first seam on one side of the first cylindrical pipe; and a second cylindrical pipe obtained by bending a second unit steel plate into a cylindrical shape, both ends of the second unit steel plate abutting each other and forming a second seam on one side of the second cylindrical pipe. The second cylindrical pipe is bent into a cylindrical shape and folded on the outer surface of the first cylindrical pipe so that the inner surface of the second unit steel pipe surrounds the first seam. The second seam is positioned not to correspond to the first seam.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: January 2, 2018
    Inventor: Yong Seok Baek
  • CORRUGATED STEEL PIPE AND METHOD FOR MANUFACTURING SAME
    Publication number: 20160003379
    Abstract: A corrugated steel pipe is disclosed. The corrugated steel pipe comprises a plurality of unit steel pipes, which are continuous in the axial direction. Each unit steel pipe comprises a first cylindrical pipe obtained by bending a first unit steel plate into a cylindrical shape, both ends of the first unit steel plate abutting each other and forming a first seam on one side of the first cylindrical pipe; and a second cylindrical pipe obtained by bending a second unit steel plate into a cylindrical shape, both ends of the second unit steel plate abutting each other and forming a second seam on one side of the second cylindrical pipe. The second cylindrical pipe is bent into a cylindrical shape and folded on the outer surface of the first cylindrical pipe so that the inner surface of the second unit steel pipe surrounds the first seam. The second seam is positioned not to correspond to the first seam.
    Type: Application
    Filed: December 12, 2013
    Publication date: January 7, 2016
    Inventor: Yong Seok BAEK