Patents by Inventor Young Eun JANG

Young Eun JANG 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).

  • Wave-shaped grouting bulb of micropile and method for forming same
    Patent number: 10501905
    Abstract: The present invention provides a wave-shaped grouting bulb (100) for securing an underground bearing capacity of a steel bar (10), the bulb comprising a plurality of protrusions (120), which have a predetermined maximum diameter (D1) and are formed along the longitudinal direction of a cylindrical pillar part (110) extending downward, wherein the neighboring protrusions (120) are formed to be spaced from each other by a predetermined formation distance (s). The present invention has an advantageous effect of improving a skin friction force and resistance to compression and pullout in the grouting bulb integrated with the steel bar and thus enhancing structural stability in the micropile body.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: December 10, 2019
    Assignee: KOREA INSTITUTE OF CIVIL ENGINEERING AND BUILDING TECHNOLOGY
    Inventors: Jin Tae Han, Young Eun Jang
  • WAVE-SHAPED GROUTING BULB OF MICROPILE AND METHOD FOR FORMING SAME
    Publication number: 20190153692
    Abstract: The present invention provides a wave-shaped grouting bulb (100) for securing an underground bearing capacity of a steel bar (10), the bulb comprising a plurality of protrusions (120), which have a predetermined maximum diameter (D1) and are formed along the longitudinal direction of a cylindrical pillar part (110) extending downward, wherein the neighboring protrusions (120) are formed to be spaced from each other by a predetermined formation distance (s). The present invention has an advantageous effect of improving a skin friction force and resistance to compression and pullout in the grouting bulb integrated with the steel bar and thus enhancing structural stability in the micropile body.
    Type: Application
    Filed: August 10, 2017
    Publication date: May 23, 2019
    Applicant: KOREA INSTITUTE OF CIVIL ENGINEERING AND BUILDING TECHNOLOGY
    Inventors: Jin Tae HAN, Young Eun JANG
  • High-molecular weight aliphatic polycarbonate prepared using base catalyst
    Patent number: 9475905
    Abstract: An aliphatic polycarbonate is disclosed in which a salt consisting of a metal or onium cation and an anion having a pKa not greater than 3 is dispersed. The aliphatic polycarbonate includes repeating units of Formula 1: [-A-OC(O)O-] (wherein A is a substituted or unsubstituted C3-C60 alkylene, or a substituted or unsubstituted C3-C60 heteroalkylene and the O-A-O units in one polymer chain may be identical to or different from each other).
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: October 25, 2016
    Assignee: LOTTE CHEMICAL CORPORATION
    Inventors: Bun Yeoul Lee, Ji Hae Park, Jong Yeob Jeon, Jung Jae Lee, Young Eun Jang
  • HIGH-MOLECULAR WEIGHT ALIPHATIC POLYCARBONATE PREPARED USING BASE CATALYST
    Publication number: 20150353678
    Abstract: An aliphatic polycarbonate is disclosed in which a salt consisting of a metal or onium cation and an anion having a pKa not greater than 3 is dispersed. The aliphatic polycarbonate includes repeating units of Formula 1: [-A-OC(O)O-] (wherein A is a substituted or unsubstituted C3-C60 alkylene, or a substituted or unsubstituted C3-C60 heteroalkylene and the O-A-O units in one polymer chain may be identical to or different from each other).
    Type: Application
    Filed: May 28, 2013
    Publication date: December 10, 2015
    Applicant: LOTTE CHEMICAL CORPORATION
    Inventors: Bun Yeoul LEE, Ji Hae PARK, Jong Yeob JEON, Jung Jae LEE, Young Eun JANG