Patents by Inventor Chun Sun LEE

Chun Sun 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).

  • Patent number: 11983370
    Abstract: A two dimensional touch sensor panel can be thermoformed or curved by another process to a three-dimensional touch sensor panel, and the three-dimensional touch sensor panel can be laminated to a three-dimension surface having a highly curved or spherical shape. In some examples, thermoforming a two-dimensional touch sensor panel into a three-dimensional touch sensor panel can result in strain of the touch electrodes, and can result in non-uniform three-dimensional touch electrodes (distortion of the two-dimensional touch electrode pattern). The strain can be a function of the curved touch-sensitive surface and/or process related mechanical strain from thermoforming. In some examples, a three-dimensional touch sensor panel can be formed with uniform area touch electrodes using a two-dimensional touch sensor panel pattern with non-uniform area touch electrodes in accordance with the strain pattern expected for a given curved surface and thermoforming technique.
    Type: Grant
    Filed: July 24, 2020
    Date of Patent: May 14, 2024
    Assignee: Apple Inc.
    Inventors: Supratik Datta, Karan Jain, Zhiyuan Sun, Ho Hyung Lee, Da Yu, Wei Lin, Nathan K. Gupta, Chun-Chih Chang
  • Patent number: 10160775
    Abstract: The present invention relates to a novel group 4 transition metal compound, a method for preparing the compound, a catalyst composition containing the compound, and a method for preparing a polyolefin, comprising a step for forming a polymerization reaction of olefin monomers in the presence of the catalyst composition. The group 4 transition metal compound of the present invention exhibits an excellent catalytic activity and has excellent thermal stability in a polyolefin synthesis reaction, and thus can be used even in a polyolefin synthesis reaction at a high temperature. In addition, the compound of the present invention can be advantageously used in the synthesis process of grade-controlled polyolefin since the weight average molecular weight of the synthesized polyolefin and the octane content in the polymer can be adjusted by varying the kinds of center metal and ligand.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: December 25, 2018
    Assignee: HANWHA CHEMICAL CORPORATION
    Inventors: Ui Gab Joung, Dong Ok Kim, Dong Wook Kim, Ah Reum Kim, Hye Ran Park, Kil Sagong, Sung Hae Jun, Chun Sun Lee, Eun Yeong Hwang
  • Publication number: 20170233415
    Abstract: The present invention relates to a novel group 4 transition metal compound, a method for preparing the compound, a catalyst composition containing the compound, and a method for preparing a polyolefin, comprising a step for forming a polymerization reaction of olefin monomers in the presence of the catalyst composition. The group 4 transition metal compound of the present invention exhibits an excellent catalytic activity and has excellent thermal stability in a polyolefin synthesis reaction, and thus can be used even in a polyolefin synthesis reaction at a high temperature. In addition, the compound of the present invention can be advantageously used in the synthesis process of grade-controlled polyolefin since the weight average molecular weight of the synthesized polyolefin and the octane content in the polymer can be adjusted by varying the kinds of center metal and ligand.
    Type: Application
    Filed: August 28, 2015
    Publication date: August 17, 2017
    Inventors: Ui Gab JOUNG, Dong Ok KIM, Dong Wook KIM, Ah Reum KIM, Hye Ran PARK, Kil SAGONG, Sung Hae JUN, Chun Sun LEE, Eun Yeong HWANG