Patents by Inventor Chang-Gil KWON

Chang-Gil KWON 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).

  • Publication number: 20230136640
    Abstract: Provided is a polishing slurry composition including abrasive particles, a dispersant, a pH buffering agent, and a dishing inhibitor including at least one selected from a group consisting of a saccharides compound, an amino acid, and a mixture thereof.
    Type: Application
    Filed: October 31, 2022
    Publication date: May 4, 2023
    Applicant: KCTECH CO., LTD.
    Inventors: Chang Gil KWON, Sung Pyo LEE
  • Patent number: 11279852
    Abstract: Described herein are chemical mechanical polishing (CMP) slurry compositions, such as CMP slurry compositions for polishing an indium tin oxide (ITO) layer, along with methods of fabricating a semiconductor device using such a CMP slurry composition. The CMP slurry composition can include a polishing particle, a dispersing agent, an auxiliary oxidizing agent, and a sugar alcohol compound.
    Type: Grant
    Filed: June 25, 2020
    Date of Patent: March 22, 2022
    Inventors: Eunsung Seo, Chang Gil Kwon, Sung Pyo Lee, Dongchan Kim, Bo Yun Kim, Jun Ha Hwang
  • Publication number: 20210130651
    Abstract: Described herein are chemical mechanical polishing (CMP) slurry compositions, such as CMP slurry compositions for polishing an indium tin oxide (ITO) layer, along with methods of fabricating a semiconductor device using such a CMP slurry composition. The CMP slurry composition can include a polishing particle, a dispersing agent, an auxiliary oxidizing agent, and a sugar alcohol compound.
    Type: Application
    Filed: June 25, 2020
    Publication date: May 6, 2021
    Applicants: Samsung Electronics Co., Ltd., KCTECH CO., LTD.
    Inventors: EUNSUNG SEO, CHANG GIL KWON, SUNG PYO LEE, DONGCHAN KIM, BO YUN KIM, JUN HA HWANG
  • Publication number: 20200071566
    Abstract: A slurry composition for a chemical mechanical polishing (CMP) process includes about 0.1% by weight to about 10% by weight of polishing particles, about 0.001% by weight to about 1% by weight of an amine compound, about 0.001% by weight to about 1% by weight of a first cationic compound that is amino acid, about 0.001% by weight to about 1% by weight of a second cationic compound that is organic acid, and about 1% by weight to about 5% by weight of polyhydric alcohol including at least two hydroxyl groups.
    Type: Application
    Filed: August 28, 2019
    Publication date: March 5, 2020
    Applicant: KCTECH CO., LTD.
    Inventors: Sang-hyun Park, Hyo-san Lee, Won-ki Hur, Jung-yoon Kim, Jun-ha Hwang, Chang-gil Kwon, Sung-pyo Lee
  • Patent number: 10494547
    Abstract: An additive composition and a positive polishing slurry composition including the additive composition are provided. The additive composition includes a cationic compound, an organic acid, a nonionic compound, and a pH adjuster.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: December 3, 2019
    Assignee: KCTECH CO., LTD.
    Inventors: Jang Kuk Kwon, Sung Pyo Lee, Chang Gil Kwon, Jun Ha Hwang
  • Patent number: 10435587
    Abstract: A polishing composition includes abrasive particles, a pyrrolidone containing a hydrophilic group, a dispersing agent, a first dishing inhibitor including polyacrylic acid, and a second dishing inhibitor including a non-ionic polymer.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: October 8, 2019
    Assignees: Samsung Electronics Co., Ltd., K.C. Tech Co., Ltd.
    Inventors: Seung-Ho Park, Ki-Hwa Jung, Sang-Kyun Kim, Jun-Ha Hwang, Chang-Gil Kwon, Seung-Yeop Baek, Jae-Woo Lee, Ji-Sung Lee, Jae-Kwang Choi, Jin-Myung Hwang
  • Patent number: 10421883
    Abstract: An abrasive particle-dispersion layer composite and a polishing slurry composition including the abrasive particle-dispersion layer composite are provided. The abrasive particle-dispersion layer composite includes abrasive particles, a first dispersant that is at least one cationic compound among an amino acid, an organic acid, polyalkylene glycol and a high-molecular polysaccharide coupled to a glucosamine compound, and a second dispersant that is a cationic polymer including at least two ionized cations in a molecular formula.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: September 24, 2019
    Assignee: KCTECH CO., LTD.
    Inventors: Jang Kuk Kwon, Sung Pyo Lee, Chang Gil Kwon, Jun Ha Hwang
  • Publication number: 20180362806
    Abstract: Provided are a chemical mechanical polishing (CMP) slurry composition and a method of fabricating a semiconductor device using the same. The chemical mechanical polishing (CMP) slurry composition includes abrasive particles, a first cationic compound which comprises at least any one of an amino acid, a polyalkylene glycol, a polymer polysaccharide to which a glucosamine compound is bonded, and a polymer containing an amine group, a second cationic compound which comprises an organic acid, and a nonionic compound which comprises polyetheramine.
    Type: Application
    Filed: November 25, 2017
    Publication date: December 20, 2018
    Inventors: Seung Ho PARK, Chang Gil Kwon, Sung Pyo LEE, Jun Ha HWANG, Sang Kyun KIM, Hye Sung PARK, Su Young SHIN, Woo In LEE, Yang Hee LEE, Jong Hyuk PARK, Il Young YOON
  • Patent number: 10138395
    Abstract: An abrasive particle-dispersion layer composite and a polishing slurry composition including the abrasive particle-dispersion layer composite are provided. The abrasive particle-dispersion layer composite includes abrasive particles, a first dispersant that is at least one anionic compound among a copolymer with a functional group of a resonance structure, a carboxyl group-containing polymer and a carboxyl group-containing organic acid, a second dispersant that is at least one cationic compound among an amino acid, an organic acid, polyalkylene glycol and a high-molecular polysaccharide coupled to a glucosamine compound, and a third dispersant that is a cationic polymer including at least two ionized cations in a molecular formula.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: November 27, 2018
    Assignee: KCTECH CO., LTD.
    Inventors: Jang Kuk Kwon, Sung Pyo Lee, Chang Gil Kwon, Jun Ha Hwang
  • Publication number: 20170183539
    Abstract: An abrasive particle-dispersion layer composite and a polishing slurry composition including the abrasive particle-dispersion layer composite are provided. The abrasive particle-dispersion layer composite includes abrasive particles, a first dispersant that is at least one cationic compound among an amino acid, an organic acid, polyalkylene glycol and a high-molecular polysaccharide coupled to a glucosamine compound, and a second dispersant that is a cationic polymer including at least two ionized cations in a molecular formula.
    Type: Application
    Filed: December 21, 2016
    Publication date: June 29, 2017
    Applicant: K.C.Tech Co., Ltd.
    Inventors: Jang Kuk KWON, Sung Pyo LEE, Chang Gil KWON, Jun Ha HWANG
  • Publication number: 20170183538
    Abstract: An additive composition and a positive polishing slurry composition including the additive composition are provided. The additive composition includes a cationic compound, an organic acid, a nonionic compound, and a pH adjuster.
    Type: Application
    Filed: December 15, 2016
    Publication date: June 29, 2017
    Applicant: K.C.Tech Co., Ltd.
    Inventors: Jang Kuk KWON, Sung Pyo LEE, Chang Gil KWON, Jun Ha HWANG
  • Publication number: 20170166780
    Abstract: An abrasive particle-dispersion layer composite and a polishing slurry composition including the abrasive particle-dispersion layer composite are provided. The abrasive particle-dispersion layer composite includes abrasive particles, a first dispersant that is at least one anionic compound among a copolymer with a functional group of a resonance structure, a carboxyl group-containing polymer and a carboxyl group-containing organic acid, a second dispersant that is at least one cationic compound among an amino acid, an organic acid, polyalkylene glycol and a high-molecular polysaccharide coupled to a glucosamine compound, and a third dispersant that is a cationic polymer including at least two ionized cations in a molecular formula.
    Type: Application
    Filed: December 8, 2016
    Publication date: June 15, 2017
    Applicant: K.C. Tech Co., Ltd.
    Inventors: Jang Kuk KWON, Sung Pyo Lee, Chang Gil Kwon, Jun Ha Hwang
  • Publication number: 20170029664
    Abstract: A polishing composition includes abrasive particles, a pyrrolidone containing a hydrophilic group, a dispersing agent, a first dishing inhibitor including polyacrylic acid, and a second dishing inhibitor including a non-ionic polymer.
    Type: Application
    Filed: July 20, 2016
    Publication date: February 2, 2017
    Applicant: K.C. Tech Co., Ltd.
    Inventors: Seung-Ho PARK, Ki-Hwa JUNG, Sang-Kyun KIM, Jun-Ha HWANG, Chang-Gil KWON, Seung-Yeop BAEK, Jae-Woo LEE, Ji-Sung LEE, Jae-Kwang CHOI, Jin-Myung HWANG