Patents by Inventor Jun Shan Zhang

Jun Shan Zhang 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 of using alloy steel having superior corrosion resistance in corrosive environment containing molten salts containing alkali oxides
    Patent number: 6224824
    Abstract: Disclosed is an alloy steel of high corrosion resistance to hot molten salts containing chlorides and/or alkali oxides. The alloy steel is manufactured from a composition comprising 20-40 weight % of Ni, 0-8 weight % of Cr, 0.05 weight % or less of C, 0.5 weight % or less of Si, 1.0 weight % or less of Mn, 0.05 weight % or less of S, and the balance of Fe to total weight. With a low Cr content, the alloy steel is superb in the corrosion resistance to chloride and/or alkali oxide-containing molten salts, including LiCl—Li2O. Also, the alloy steel shows stable corrosion resistance to molten salts even at high temperature as well as low temperature in addition to being superior to workability. Thus, the alloy steel can be processed into plates, bars or pipes which are used for structural materials and structural components for treating molten salts.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: May 1, 2001
    Assignee: Korea Electric Power Corporation
    Inventors: Jun Shan Zhang, Young Joon Shin, Soo Haeng Cho, Hyun Soo Park