Patents by Inventor KiJu Um

KiJu Um 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).

  • ORGANIC-INORGANIC HYBRID POLYOLEFIN COMPOSITE AND PREPARATION METHOD THEREOF
    Publication number: 20240018283
    Abstract: The present disclosure relates to an organic-inorganic hybrid polyolefin composite and a preparation method of the same.
    Type: Application
    Filed: November 23, 2021
    Publication date: January 18, 2024
    Applicant: LG CHEM, LTD.
    Inventors: Sang Yool LEE, Joon Hee CHO, Eun Kyoung SONG, Sangeun AN, Eunyoung SHIN, Jinseok LEE, Kiju UM, Jinmo KIM
  • Hybrid Supported Catalyst and Method of Preparing Polyolefin Using the Same
    Publication number: 20220017657
    Abstract: Provided are a hybrid supported catalyst which includes two or more kinds of transition metal compounds having the following Chemical Formulas 1 and 2, thereby preparing a polyolefin, particularly, a high-density polyethylene having a molecular structure which is optimized to improve tensile strength of a chlorinated polyolefin compound, and a method of preparing a polyolefin using the same: wherein all the variables are described herein.
    Type: Application
    Filed: September 25, 2020
    Publication date: January 20, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Sun Mi Kim, Ue Ryung Seo, Bog Ki Hong, Eun Kyoung Song, Daesik Hong, Si Jung Lee, Cheolhwan Jeong, Kiju Um
  • Apparatus and method for mass spectrometry, and method for analyzing semiconductor wafer
    Patent number: 10825674
    Abstract: An apparatus for mass spectrometry includes a plate on which a semiconductor wafer including an organic matter is disposed. A hybrid provider provides a ZnO-graphene hybrid to a predetermined region on the semiconductor wafer. A mass analyzer detects the organic matter in the predetermined region using laser desorption/ionization mass spectrometry (LDI-MS).
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: November 3, 2020
    Assignees: SAMSUNG ELECTRONICS CO., LTD., INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Kook Joo Kim, KiJu Um, Cheol Sang Yoon, KangTaek Lee
  • APPARATUS AND METHOD FOR MASS SPECTROMETRY, AND METHOD FOR ANALYZING SEMICONDUCTOR WAFER
    Publication number: 20190279856
    Abstract: An apparatus for mass spectrometry includes a plate on which a semiconductor wafer including an organic matter is disposed. A hybrid provider provides a ZnO-graphene hybrid to a predetermined region on the semiconductor wafer. A mass analyzer detects the organic matter in the predetermined region using laser desorption/ionization mass spectrometry (LDI-MS).
    Type: Application
    Filed: February 28, 2019
    Publication date: September 12, 2019
    Inventors: KOOK JOO KIM, KiJu Um, Cheol Sang Yoon, KangTaek Lee