Patents by Inventor Kyu Bong Han

Kyu Bong Han 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).

  • Cylinder device having improved wear resistance through optimal arrangement of fine textures
    Patent number: 9759325
    Abstract: There is provided a cylinder device having optimal arrangement of fine textures and optimal surface roughness capable of reducing wear of a cylinder bore side and a piston ring by processing fine textures in an optimal selection region of the cylinder bore side to improve lubrication characteristics between the piston ring and the cylinder bore side while reducing engine oil consumption by processing surface roughness of the cylinder bore side to an optimal status.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: September 12, 2017
    Assignee: Doosan Infracore Co., Ltd.
    Inventors: Seok Ju Oh, Sung Gi Kim, Kyu Bong Han
  • CYLINDER DEVICE HAVING IMPROVED WEAR RESISTANCE THROUGH OPTIMAL ARRANGEMENT OF FINE TEXTURES
    Publication number: 20140345453
    Abstract: There is provided a cylinder device having optimal arrangement of fine textures and optimal surface roughness capable of reducing wear of a cylinder bore side and a piston ring by processing fine textures in an optimal selection region of the cylinder bore side to improve lubrication characteristics between the piston ring and the cylinder bore side while reducing engine oil consumption by processing surface roughness of the cylinder bore side to an optimal status.
    Type: Application
    Filed: December 17, 2012
    Publication date: November 27, 2014
    Inventors: Seok Ju Oh, Sung Gi Kim, Kyu Bong Han