Patents by Inventor Byoung-Yun Kim

Byoung-Yun Kim 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: 20190375922
    Abstract: A conjugated diene-based copolymer composition is provided. The conjugated diene-based copolymer composition includes a first conjugated diene-based copolymer having 20 wt % to 60 wt % of an aromatic vinyl monomer-derived repeating unit, 35 wt % to 75 wt % of a first conjugated diene-based monomer-derived repeating unit, and 1 wt % to 10 wt % of a hydroxyalkyl (meth)acrylate monomer-derived repeating unit. The first conjugated diene-based copolymer has a Mooney viscosity (MV) at 100° C. of 30 to 120. The conjugated diene-based copolymer composition also includes a second conjugated diene-based copolymer having 20 wt % to 60 wt % of an ?-methylstyrene monomer-derived repeating unit and 40 wt % to 80 wt % of a second conjugated diene-based monomer-derived repeating unit. The second conjugated copolymer has a Mooney viscosity (MV) at 100° C. of more than 120 and equal to or less than 200. A method for preparing the conjugated diene-based copolymer is also provided.
    Type: Application
    Filed: November 13, 2018
    Publication date: December 12, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Se Eun Lee, Byoung Yun Kim, Hyung Woon Yoon, Jae Min Lee, Woo Seok Choi
  • Patent number: 10501610
    Abstract: The present invention relates to a method for preparing styrene-butadiene rubber in which a molecular weight modifier containing two or more components is used in a polymerization reaction and each of the two or more components is added at a optimal time, and the method is capable of improving physical properties of the prepared styrene-butadiene rubber, and styrene-butadiene rubber prepared thereby. The styrene-butadiene rubber prepared according to the preparation method of the present invention has improvement in characteristics such as tensile strength, elongation, etc., and thus may be usefully used in the production of a tire having environmental friendliness, abrasion resistance, and the like.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: December 10, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Jae Min Lee, Se Eun Lee, Byoung Yun Kim, In Sung Jo, Woo Seok Choi
  • Patent number: 10504986
    Abstract: A display device includes: a substrate; a pad portion in a non-display area of the substrate and including a plurality of pads; a driver arranged at the pad portion to contact the pads; an interlayer insulating layer on the substrate; and an auxiliary layer in the non-display area, and each of the pads includes a first pad electrode, a second pad electrode, and a third pad electrode, which are sequentially arranged on the substrate, a width of the third pad electrode is greater than a width of the second pad electrode and a width of the first pad electrode, and a thickness of the auxiliary layer between the third pad electrode and the interlayer insulating layer is thicker than a thickness of the auxiliary layer between the third pad electrode and the second pad electrode.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: December 10, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Byoung Yong Kim, Seung-Soo Ryu, Jung Yun Jo, Jeong Ho Hwang
  • Patent number: 10432028
    Abstract: A wireless power relay apparatus includes a relay resonator configured to relay power from a source resonator configured to wirelessly transmit the power, to a target resonator configured to wirelessly receive the power through a mutual resonance, the relay resonator having a higher quality factor than the source resonator and the target resonator.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: October 1, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chi Hyung Ahn, Sang Wook Kwon, Ki Young Kim, Nam Yun Kim, Dong Zo Kim, Bong Chul Kim, Yun Kwon Park, Jae Hyun Park, Keum Su Song, Young Ho Ryu, Byoung Hee Lee
  • Publication number: 20190290443
    Abstract: Disclosed is a device for supporting hoop stress applied to a meniscus and preventing deviation of the meniscus, and the device for supporting hoop stress applied to a meniscus and preventing deviation of the meniscus may include an intermediate support member, one side extension member, and the other side extension member.
    Type: Application
    Filed: April 5, 2019
    Publication date: September 26, 2019
    Applicant: AJOU UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Byoung Hyun MIN, Young Jick KIM, Xiang Yun YIN, Do Young PARK
  • Patent number: 10407566
    Abstract: The present invention relates to a method for preparing a low styrene-butadiene rubber having a low combined styrene content and, more particular, to a method for preparing a low styrene-butadiene rubber, wherein the low styrene-butadiene rubber contributes to an excellent polymerization rate and vulcanization rate by using an aliphatic organic acid and a sulfonate based compound as emulsifiers, and is excellent in heat stability after blending, thereby improving the workability and viscosity in in roll processing, such that the low styrene-butadiene rubber is advantageous to produce a molded article with improved rigidity and hardness when mixed with a high styrene-butadiene rubber.
    Type: Grant
    Filed: November 25, 2016
    Date of Patent: September 10, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Se Eun Lee, Byoung Yun Kim, In Sung Jo, Jae Min Lee, Woo Seok Choi
  • Patent number: 10389182
    Abstract: A wireless power relay apparatus includes a relay resonator configured to relay power from a source resonator configured to wirelessly transmit the power, to a target resonator configured to wirelessly receive the power through a mutual resonance, the relay resonator having a higher quality factor than the source resonator and the target resonator.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: August 20, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chi Hyung Ahn, Sang Wook Kwon, Ki Young Kim, Nam Yun Kim, Dong Zo Kim, Bong Chul Kim, Yun Kwon Park, Jae Hyun Park, Keum Su Song, Young Ho Ryu, Byoung Hee Lee
  • Publication number: 20190138172
    Abstract: Provided is an operation method of an electronic device for controlling an external device, the method comprising the steps of: receiving a user input for a user interface (UI) provided in order to control an electronic device; determining whether a foreground application is associated with an external device; and transmitting a control signal corresponding to the user input to the external device when the foreground application is associated with the external device.
    Type: Application
    Filed: October 20, 2016
    Publication date: May 9, 2019
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Byoung-oh KIM, Chul-joo KIM, Sang-jeong LEE, Yoon-kyung LEE, Dong-yun JIN
  • Publication number: 20180215902
    Abstract: The present invention relates to a method for preparing styrene-butadiene rubber in which a molecular weight modifier containing two or more components is used in a polymerization reaction and each of the two or more components is added at a optimal time, and the method is capable of improving physical properties of the prepared styrene-butadiene rubber, and styrene-butadiene rubber prepared thereby. The styrene-butadiene rubber prepared according to the preparation method of the present invention has improvement in characteristics such as tensile strength, elongation, etc., and thus may be usefully used in the production of a tire having environmental friendliness, abrasion resistance, and the like.
    Type: Application
    Filed: December 28, 2016
    Publication date: August 2, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Jae Min Lee, Se Eun Lee, Byoung Yun Kim, In Sung Jo, Woo Seok Choi
  • Patent number: 9932433
    Abstract: Provided are a method for preparing a nitrile-based rubber having an amount of ethylenically unsaturated nitrile of 34 wt % or less including preparing a polymer by performing a polymerization reaction by adding an ethylenically unsaturated nitrile-based monomer in two or more portions to a conjugated diene-based monomer, and coagulating the polymer by adding a sulfur-based coagulant to the polymer, and a nitrile-based rubber thus prepared having improved mechanical properties as well as excellent processability and low temperature characteristics.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: April 3, 2018
    Assignee: LG Chem, Ltd.
    Inventors: Jae Min Lee, Se Eun Lee, Byoung Yun Kim, In Sung Jo, Woo Seok Choi
  • Publication number: 20170369684
    Abstract: The present invention relates to a method for preparing a low styrene-butadiene rubber having a low combined styrene content and, more particular, to a method for preparing a low styrene-butadiene rubber, wherein the low styrene-butadiene rubber contributes to an excellent polymerization rate and vulcanization rate by using an aliphatic organic acid and a sulfonate based compound as emulsifiers, and is excellent in heat stability after blending, thereby improving the workability and viscosity in in roll processing, such that the low styrene-butadiene rubber is advantageous to produce a molded article with improved rigidity and hardness when mixed with a high styrene-butadiene rubber.
    Type: Application
    Filed: November 25, 2016
    Publication date: December 28, 2017
    Applicant: LG Chem, Ltd.
    Inventors: Se Eun Lee, Byoung Yun Kim, In Sung Jo, Jae Min Lee, Woo Seok Choi
  • Patent number: 9820517
    Abstract: Disclosed is a carboxylic acid-modified nitrile-based copolymer latex composition, including 0.1-10 parts by weight of a reactive emulsifier based on 100 parts by weight of a monomer mixture, wherein the monomer mixture includes 40-88 wt % of a conjugated diene-based monomer, 10-50 wt % of an ethylenically unsaturated nitrile monomer and 0.1-10 wt % of an ethylenically unsaturated acid monomer. Also disclosed are a method of preparing the carboxylic acid-modified nitrile-based copolymer latex composition and a latex composition for dip molding including the same. The carboxylic acid-modified nitrile-based copolymer latex composition reduces generation of foam through the use of a reactive emulsifier different from the conventional adsorption/desorption type emulsifier, thereby preventing degradation of the quality of latex caused by foam. In addition, the carboxylic acid-modified nitrile-based copolymer latex composition avoids a need for introducing a defoaming agent for removing foam or maturation process.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: November 21, 2017
    Assignee: LG CHEM. LTD.
    Inventors: Jung Eun Kim, Seung Uk Yeu, Jung Su Han, Seung Hun Yang, Byoung Yun Kim, Hyun Woo Kim, Yu Jin Cha, Ji Hyun Kim
  • Patent number: 9803070
    Abstract: Disclosed are a carboxylic acid-modified nitrile copolymer latex for dip molding comprising a combination of a carboxylic acid-modified nitrile copolymer latex and a carboxylic acid-modified styrene copolymer latex, a latex composition for dip molding comprising the same and a molded article prepared therefrom. Molded articles with superior tensile strength are produced by respectively preparing a carboxylic acid-modified nitrile latex having a low glass transition temperature and an average particle diameter of 90 nm or higher, and a carboxylic acid-modified styrene latex having a glass transition temperature of 80° C. or higher and an average particle diameter less than 90 nm and then mixing the two latexes.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: October 31, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Seung Hun Yang, Jung Su Han, Seung Uk Yeu, Byoung Yun Kim, Jung Eun Kim
  • Patent number: 9771471
    Abstract: Disclosed is a latex composition for dip molding comprising a carboxylic acid-modified nitrile copolymer latex and starch and an article produced therefrom. Advantageously, a dip-molded article having low syneresis, less stickiness and superior tensile strength can be obtained by using the carboxylic acid-modified nitrile latex in conjunction with starch.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: September 26, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Seung Hun Yang, Byoung Yun Kim, Jung Eun Kim, Seung Uk Yeu, Jung Su Han
  • Publication number: 20170226253
    Abstract: Provided are a method for preparing a nitrile-based rubber having an amount of ethylenically unsaturated nitrile of 34 wt % or less including preparing a polymer by performing a polymerization reaction by adding an ethylenically unsaturated nitrile-based monomer in two or more portions to a conjugated diene-based monomer, and coagulating the polymer by adding a sulfur-based coagulant to the polymer, and a nitrile-based rubber thus prepared having improved mechanical properties as well as excellent processability and low temperature characteristics.
    Type: Application
    Filed: June 5, 2015
    Publication date: August 10, 2017
    Applicant: LG Chem, Ltd.
    Inventors: Jae Min Lee, Se Eun Lee, Byoung Yun Kim, In Sung Jo, Woo Seok Choi
  • Patent number: 9433972
    Abstract: Disclosed is coated paper having a coating structure in which styrene-butadiene latex distribution of a paper coating layer is controlled in order to reduce fold cracking of the coated paper and a method for manufacturing the same. The coated paper in which different types of latexes are separately applied to two coating layers exhibits considerably improved stiffness and reduced fold crack, as compared to the existing coated paper.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: September 6, 2016
    Assignee: LG Chem, Ltd.
    Inventors: Seung-Uk Yeu, Chang-Sun Han, Young-Min Lee, Byoung-Yun Kim
  • Publication number: 20160244575
    Abstract: Disclosed is a carboxylic acid-modified nitrile-based copolymer latex composition, including 0.1-10 parts by weight of a reactive emulsifier based on 100 parts by weight of a monomer mixture, wherein the monomer mixture includes 40-88 wt % of a conjugated diene-based monomer, 10-50 wt % of an ethylenically unsaturated nitrile monomer and 0.1-10 wt % of an ethylenically unsaturated acid monomer. Also disclosed are a method of preparing the carboxylic acid-modified nitrile-based copolymer latex composition and a latex composition for dip molding including the same. The carboxylic acid-modified nitrile-based copolymer latex composition reduces generation of foam through the use of a reactive emulsifier different from the conventional adsorption/desorption type emulsifier, thereby preventing degradation of the quality of latex caused by foam. In addition, the carboxylic acid-modified nitrile-based copolymer latex composition avoids a need for introducing a defoaming agent for removing foam or maturation process.
    Type: Application
    Filed: November 17, 2014
    Publication date: August 25, 2016
    Inventors: Jung Eun KIM, Seung Uk YEU, Jung Su HAN, Seung Hun YANG, Byoung Yun KIM, Hyun Woo KIM, Yu Jin CHA, Ji Hyun KIM
  • Patent number: 9388302
    Abstract: Provided are a latex for dip molding, a composition for dip molding, a preparation method of a dip molded product, and a dip molded product prepared thereby. The latex for dip molding includes a conjugated diene monomer, an ethylenically unsaturated nitrile monomer, and an ethylenically unsaturated acid monomer, wherein the latex further includes sodium methallyl sulfonate as a copolymerizable ionic monomer. A dip molded product having excellent tensile strength, elongation, and touch may be obtained from a composition using the latex according to the present invention, and the generation of limitations, such as non-uniformity of physical properties and difficulties in product management, may be prevented.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: July 12, 2016
    Assignee: LG CHEM, LTD.
    Inventors: Seung Hun Yang, Ho Yeul Choi, Jung Su Han, Byoung Yun Kim, Jung Eun Kim
  • Publication number: 20150225553
    Abstract: Disclosed is a latex composition for dip molding comprising a carboxylic acid-modified nitrile copolymer latex and starch and an article produced therefrom. Advantageously, a dip-molded article having low syneresis, less stickiness and superior tensile strength can be obtained by using the carboxylic acid-modified nitrile latex in conjunction with starch.
    Type: Application
    Filed: December 18, 2013
    Publication date: August 13, 2015
    Inventors: Seung Hun Yang, Byoung Yun Kim, Jung Eun Kim, Seung Uk Yeu, Jung Su Han
  • Patent number: 8993106
    Abstract: Disclosed is coated paper having a coating structure in which styrene-butadiene latex distribution of a paper coating layer is controlled in order to reduce fold cracking of the coated paper and a method for manufacturing the same. The coated paper in which different types of latexes are separately applied to two coating layers exhibits considerably improved stiffness and reduced fold crack, as compared to the existing coated paper.
    Type: Grant
    Filed: May 25, 2011
    Date of Patent: March 31, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Seung-Uk Yeu, Chang-Sun Han, Young-Min Lee, Byoung-Yun Kim