Patents by Inventor Bum-Gyu Choi

Bum-Gyu Choi 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: 8889811
    Abstract: Provided is a curable composition and its use. The curable composition may exhibit excellent processibility and workability. The curable composition has excellent light extraction efficiency, crack resistance, hardness, thermal and shock resistance and an adhesive property after curing. The curable composition may provide a cured product exhibiting stable durability and reliability under severe conditions for a long time, and having no whitening and surface stickiness.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: November 18, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Min Jin Ko, Myung Sun Moon, Jae Ho Jung, Bum Gyu Choi, Dae Ho Kang, Min Kyoun Kim, Byung Kyu Cho
  • Publication number: 20140319575
    Abstract: Provided is an organopolysiloxane and its use. The organopolysiloxane may exhibit excellent processibility and workability. In addition, when the organopolysiloxane is used as an encapsulant, it exhibits excellent light extraction efficiency, crack resistance, hardness, thermal and shock resistance and an adhesive property.
    Type: Application
    Filed: May 12, 2014
    Publication date: October 30, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Bum Gyu CHOI, Min Jin KO, Myung Sun MOON, Jae Ho JUNG, Dae Ho KANG, Min Kyoun KIM, Byung Kyu CHO
  • Publication number: 20140249288
    Abstract: A method of preparing an organopolysiloxane is provided. An organopolysiloxane, which has both a linear or cross-linking structure derived from a trifunctional siloxane unit and a linear structure derived from a difunctional siloxane unit among the molecular structures and also has a sufficiently long linear structure, can be effectively prepared. Also, the organopolysiloxane can be synthesized so that it can have a sufficiently high molecular weight, and a target product showing excellent physical properties can be effectively prepared by minimizing a ratio of a functional group such as an alkoxy group or a hydroxyl group in the synthesized organopolysiloxane.
    Type: Application
    Filed: May 13, 2014
    Publication date: September 4, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Bum Gyu CHOI, Min Jin KO, Myung Sun MOON, Jae Ho JUNG, Dae Ho KANG, Min Kyoun KIM, Byung Kyu CHO
  • Patent number: 8809127
    Abstract: Provided is a curable composition and its use. The curable composition may exhibit excellent processability and workability. The curable composition has excellent light extraction efficiency, crack resistance, hardness, thermal and shock resistance and an adhesive property after curing. The curable composition may provide a cured product exhibiting stable durability and reliability under severe conditions for a long time and having no whitening and surface stickiness.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: August 19, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Min Jin Ko, Jae Ho Jung, Myung Sun Moon, Bum Gyu Choi, Dae Ho Kang, Min Kyoun Kim, Byung Kyu Cho
  • Publication number: 20140175333
    Abstract: Provided are a curable composition, a light emitting diode, a liquid crystal display, and a lighting apparatus. The curable composition may have excellent processibility and workability, and excellent crack resistance, hardness, thermal resistance, transparency and adhesiveness after curing. The composition has neither whitening after being applied nor surface stickiness. The composition may be useful as an adhesive or encapsulating material of an optical semiconductor device such as an LED, a CCD or a photocoupler.
    Type: Application
    Filed: December 17, 2013
    Publication date: June 26, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Min Kyoun KIM, Min Jin KO, Myungsun MOON, Jae Ho JUNG, Bum Gyu CHOI, Dae Ho KANG
  • Patent number: 8735525
    Abstract: The present invention relates to a curable composition. A curable composition may be provided; which shows excellent processability and workability; which shows excellent light extraction efficiency, crack resistance, hardness, thermal shock resistance and adhesive strength after curing; and which has excellent reliability and long-term reliability under high-temperature and/or high-moisture conditions. Also, turbidity and surface stickiness may be prevented in the cured product.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: May 27, 2014
    Assignee: LG Chem, Ltd
    Inventors: Min Jin Ko, Myung Sun Moon, Jae Ho Jung, Bum Gyu Choi, Dae Ho Kang, Min Kyoung Kim
  • Patent number: 8729208
    Abstract: A curable composition is provided. A cured product showing excellent light extraction efficiency, crack resistance, hardness, thermal shock resistance and adhesive strength after a curing, as well as showing excellent processability and workability is provided. Also, surface stickiness may be prevented in the cured product without causing turbidity etc.
    Type: Grant
    Filed: July 25, 2012
    Date of Patent: May 20, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Min Jin Ko, Myung Sun Moon, Jae Ho Jung, Bum Gyu Choi, Dae Ho Kang, Min Kyoun Kim
  • Publication number: 20140132892
    Abstract: A curable composition and use thereof are provided. The composition can be useful in exhibiting excellent processability and workability, and providing a cured product which exhibits superior light extraction efficiency, crack resistance, hardness, thermal shock resistance, and adhesive properties, has superior reliability under severe conditions for a long period of time and prevents opacity and stickiness onto a surface thereof when cured. Also, the curable composition capable of preventing precipitation of an additive such as a fluorescent material or a photoconversion material and being formed into a cured product having excellent transparency even when the additive is added to the curable composition can be provided.
    Type: Application
    Filed: January 22, 2014
    Publication date: May 15, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Min JIN KO, Myung Sun MOON, Jae Ho JUNG, Bum Gyu CHOI, Dae Ho KANG, Min Kyoun KIM, Byung Kyu CHO
  • Publication number: 20140128555
    Abstract: Provided is a curable composition. The curable composition, which may provide an encapsulating material, of which processibility and workability before curing are effectively maintained and which has excellent light transmissivity, light extraction efficiency, hardness, crack resistance, adhesion strength and thermal shock resistance after curing, is provided. Further, the curable composition may show effectively controlled tackiness in the surface and may not show whitening under the high temperature or high humidity condition before or after curing.
    Type: Application
    Filed: November 4, 2013
    Publication date: May 8, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Min Jin KO, Myung Sun MOON, Jae Ho CHEONG, Bum Gyu CHOI, Dae Ho KANG, Min Kyoun KIM
  • Publication number: 20140110749
    Abstract: The present application relates to a curable composition. A curable composition may be provided; which shows excellent processability and workability; which shows excellent light extraction efficiency, crack resistance, hardness, thermal shock resistance and adhesive strength after curing; and which has excellent reliability and long-term reliability under high-temperature and/or high-moisture conditions. Also, turbidity and surface stickiness may be prevented in the cured product.
    Type: Application
    Filed: December 27, 2013
    Publication date: April 24, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Min Jin KO, Myung Sun MOON, Jae Ho JUNG, Bum Gyu CHOI, Dae Ho KANG, Min Kyoun KIM
  • Publication number: 20140114043
    Abstract: Provided is a curable composition and its use. The curable composition may exhibit excellent processibility and workability. The curable composition has excellent light extraction efficiency, crack resistance, hardness, thermal and shock resistance and an adhesive property after curing. The curable composition may provide a cured product exhibiting stable durability and reliability under severe conditions for a long time, and having no whitening and surface stickiness.
    Type: Application
    Filed: December 23, 2013
    Publication date: April 24, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Min Jin Ko, Myung Sun Moon, Jae Ho Jung, Bum Gyu Choi, Dae Ho Kang, Min Kyoun Kim, Byung Kyu Cho
  • Publication number: 20140110748
    Abstract: Provided is a curable composition and its use. The curable composition may exhibit excellent processibility and workability. The curable composition has excellent light extraction efficiency, crack resistance, hardness, thermal and shock resistance and an adhesive property after curing. The curable composition may provide a cured product exhibiting stable durability and reliability under severe conditions for a long time and having no whitening and surface stickiness.
    Type: Application
    Filed: December 23, 2013
    Publication date: April 24, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Min Jin KO, Jae Ho JUNG, Myung Sun MOON, Bum Gyu CHOI, Dae Ho KANG, Min Kyoun KIM, Byung Kyu CHO
  • Publication number: 20140114042
    Abstract: Provided is a curable composition and its use. The curable composition may exhibit excellent processibility and workability. The curable composition has excellent light extraction efficiency, crack resistance, hardness, thermal and shock resistance and an adhesive property after curing. The curable composition may provide a cured product exhibiting stable durability and reliability under severe conditions in a long time and having no whitening and surface stickiness.
    Type: Application
    Filed: December 23, 2013
    Publication date: April 24, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Min Jin KO, Jae Ho JUNG, Myung Sun MOON, Bum Gyu CHOI, Dae Ho KANG, Min Kyoun KIM, Byung Kyu CHO
  • Publication number: 20140110750
    Abstract: A curable composition is provided. A cured product showing excellent light extraction efficiency, crack resistance, hardness, thermal shock resistance and adhesive strength after a curing, as well as showing excellent processability and workability is provided. Also, surface stickiness may be prevented in the cured product without causing turbidity etc.
    Type: Application
    Filed: December 30, 2013
    Publication date: April 24, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Min Jin KO, Myung Sun MOON, Jae Ho JUNG, Bum Gyu CHOI, Dae Ho KANG, Min Kyoun KIM
  • Publication number: 20140111976
    Abstract: A silicone resin is provided. The silicone resin may be effectively used to encapsulate a semiconductor element, for example, a light-emitting element of a light-emitting diode.
    Type: Application
    Filed: December 30, 2013
    Publication date: April 24, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Min Jin KO, Myung Sun MOON, Jae Ho JUNG, Bum Gyu CHOI, Dae Ho KANG, Min Kyoun KIM
  • Publication number: 20140103389
    Abstract: Provided is a curable composition and its use. The curable composition may exhibit excellent processibility and workability. The curable composition has excellent light extraction efficiency, crack resistance, hardness, thermal and shock resistance and an adhesive property after curing. The curable composition may provide a cured product exhibiting stable durability and reliability under severe conditions for a long time and having no whitening and surface stickiness.
    Type: Application
    Filed: December 18, 2013
    Publication date: April 17, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Bum Gyu Choi, Min Jin Ko, Myung Sun Moon, Jae Ho Jung, Dae Ho Kang, Min Kyoun Kim, Byung Kyu Cho
  • Publication number: 20140103390
    Abstract: Provided is a curable composition and its use. The curable composition may exhibit excellent processibility and workability. The curable composition has excellent light extraction efficiency, crack resistance, hardness, thermal and shock resistance and an adhesive property after curing. The curable composition may provide a cured product exhibiting stable durability and reliability under severe conditions for a long time and having no whitening and surface stickiness.
    Type: Application
    Filed: December 23, 2013
    Publication date: April 17, 2014
    Applicant: LG Chem, Ltd.
    Inventors: Min Jin KO, Jae Ho JUNG, Myung Sun MOON, Bum Gyu CHOI, Dae Ho KANG, Min Kyoun KIM, Byung Kyu CHO
  • Publication number: 20140088251
    Abstract: Provided is a curable composition and its use. The curable composition may exhibit excellent processability and workability. The curable composition has excellent light extraction efficiency, crack resistance, hardness, thermal and shock resistance and an adhesive property after curing. The curable composition may provide a cured product exhibiting stable durability and reliability under severe conditions in a long time, and not inducing whitening and surface stickiness.
    Type: Application
    Filed: November 27, 2013
    Publication date: March 27, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Min Jin Ko, Myung Sun Moon, Jae Ho Jung, Bum Gyu Choi, Dae Ho Kang, Min Kyoun Kim, Byung Kyu Cho
  • Publication number: 20140088281
    Abstract: This application relates to a curable composition and its use. The curable composition may exhibit excellent processibility and workability. The curable composition has excellent light extraction efficiency, crack resistance, hardness, thermal and shock resistance and an adhesive property after curing. The curable composition may provide a cured product exhibiting stable durability and reliability under severe conditions for a long time and having no whitening and surface stickiness.
    Type: Application
    Filed: December 2, 2013
    Publication date: March 27, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Min Jin KO, Bum Gyu CHOI, Myung Sun MOON, Jae Ho JUNG, Dae Ho KANG, Min Kyoun KIM, Byung Kyu CHO
  • Publication number: 20140039112
    Abstract: Provided are a curable composition and its use. The curable composition can exhibit excellent processability and workability. The curable composition exhibits excellent light extraction efficiency, hardness, thermal and shock resistance, moisture resistance, gas permeability and adhesiveness, after curing. In addition, the curable composition can provide a cured product that exhibits long-lasting durability and reliability even under harsh conditions, and that does not cause whitening and surface stickiness.
    Type: Application
    Filed: July 29, 2013
    Publication date: February 6, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Min Jin KO, Jae Ho JUNG, Bum Gyu CHOI, Min A YU