Patents by Inventor Young Ji Shim

Young Ji Shim 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).

  • Cast steel for construction equipment bucket parts and parts for construction equipment bucket comprising the same
    Patent number: 9896823
    Abstract: The present disclosure relates to a cast steel for construction equipment bucket parts and parts for a construction equipment bucket manufactured by using the same, and the cast steel includes 0.27 to 0.34 wt % of carbon (C), 1.2 to 1.8 wt % of chromium (Cr), 0.8 to 1.7 wt % of silicon (Si), 1.0 to 1.4 wt % of manganese (Mn), 0.2 to 0.4 wt % of molybdenum (Mo), 0.2 to 0.4 wt % of nickel (Ni), and a balance of iron and impurities.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: February 20, 2018
    Assignee: Doosan Infracor Co., Ltd.
    Inventors: Choung Rae Lee, Sang Min An, Young Ji Shim, Seok Won Song, Dong Seob Shim
  • CAST STEEL FOR CONSTRUCTION EQUIPMENT BUCKET PARTS AND PARTS FOR CONSTRUCTION EQUIPMENT BUCKET COMPRISING THE SAME
    Publication number: 20150184365
    Abstract: The present disclosure relates to a cast steel for construction equipment bucket parts and parts for a construction equipment bucket manufactured by using the same, and the cast steel includes 0.27 to 0.34 wt % of carbon (C), 1.2 to 1.8 wt % of chromium (Cr), 0.8 to 1.7 wt % of silicon (Si), 1.0 to 1.4 wt % of manganese (Mn), 0.2 to 0.4 wt % of molybdenum (Mo), 0.2 to 0.4 wt % of nickel (Ni), and a balance of iron and impurities.
    Type: Application
    Filed: September 11, 2014
    Publication date: July 2, 2015
    Inventors: Choung Rae LEE, Sang Min AN, Young Ji SHIM, Seok Won SONG, Dong Seob SHIM
  • Preparation method for (Z)-7-chloro-((S)-2,2-dimethylcyclopropanecarboxamido)-2-heptenoic acid
    Patent number: 7371897
    Abstract: Provided is a novel preparation method of (Z)-7-chloro-((S)-2,2-dimethylcyclopropanecarboxamido)-2-heptenoic acid represented by the following formula (1), a key intermediate of cilastatin used as a supplement to imipenem. The novel preparation method of the invention produces a pure (Z)-7-chloro-((S)-2,2-dimethylcyclopropanecarboxamido)-2-heptenoic acid, a key intermediate of cilastatin, by selective hydrolysis of E isomers.
    Type: Grant
    Filed: April 10, 2007
    Date of Patent: May 13, 2008
    Assignee: Wischem Co., Ltd.
    Inventors: Yang Rai Cho, Young Ji Shim, Eon Cheol Koo, Seon Yi Jeong, Byung Hwan Kim