Patents by Inventor Chung-Rea Lee

Chung-Rea Lee 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).

  • Bearing having improved consume resistivity and manufacturing method thereof
    Patent number: 8216338
    Abstract: Disclosed is a composition for a bush-type bearing, a bush-type bearing manufactured using the composition, and a method of manufacturing the bush-type bearing. The bearing has excellent friction characteristics with a shaft made of iron (Fe) based material, and thus is able to increase the lubrication cycle of a lubricant. Further, the bearing has excellent hardness, and thus is able to prevent plastic deformation under high contact pressure.
    Type: Grant
    Filed: November 20, 2007
    Date of Patent: July 10, 2012
    Assignee: Doosan Infracore Co., Ltd.
    Inventors: Dong-Seob Shim, Chung-Rea Lee
  • Bearing Having Improved Consume Resistivity and Manufacturing Method Thereof
    Publication number: 20090274403
    Abstract: Disclosed is a composition for a bush-type bearing, a bush-type bearing manufactured using the composition, and a method of manufacturing the bush-type bearing. The bearing has excellent friction characteristics with a shaft made of iron (Fe) based material, and thus is able to increase the lubrication cycle of a lubricant. Further, the bearing has excellent hardness, and thus is able to prevent plastic deformation under high contact pressure.
    Type: Application
    Filed: November 20, 2007
    Publication date: November 5, 2009
    Applicant: DOOSAN INFRACORE CO., LTD.
    Inventors: Dong-Seob Shim, Chung-Rea Lee