Patents by Inventor Sung-Hwan Cha

Sung-Hwan Cha 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: 20200131112
    Abstract: The present disclosure relates to a novel compound represented by Chemical Formula 1 and an organic light emitting device using the same. The compound is used as a material of an organic material layer of the organic light emitting device.
    Type: Application
    Filed: April 11, 2018
    Publication date: April 30, 2020
    Inventors: Yong Bum CHA, Sung Jae LEE, Yeon Hwan KIM, Sang Young JEON, Su Jin HAN
  • Patent number: 10597344
    Abstract: The present invention relates to a method for preparing high-purity 1,3-cyclohexanedimethanol capable of achieving a high conversion rate by allowing most of the reactant to participate in the reaction, and of increasing reaction efficiency and economic efficiency by further simplifying the reaction process, while minimizing by-products within a shorter period of time. Specifically, the method for preparing 1,3-cyclohexanedimethanol includes reducing 1,3-cyclohexanedicarboxylic acid in the presence of a metal catalyst, which is fixed to a silica support and includes a ruthenium (Ru) compound, a tin (Sn) compound and a platinum (Pt) compound in a weight ratio of 1:0.8 to 1.2:1.2 to 2.4.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: March 24, 2020
    Assignee: Lotte Chemical Corporation
    Inventors: Mi Sun Cha, Seong Hwan Choi, Sung Min Kim, Sung Joon Park, Chan Yeong Yun, Young Heon Choi
  • Patent number: 10596582
    Abstract: A deposition apparatus uniformly controlling deposited quantities of a plurality of depositing sources by efficiently determining an abnormal depositing source. The deposition apparatus may reduce loss of materials by exactly determining an abnormal depositing source. The deposition apparatus includes: a plurality of depositing sources spraying a deposition material; a substrate holder fixing a substrate to face the depositing source; a depositing source shutter disposed at one side of the depositing source and opening and closing an passage of each depositing source; and a main shutter disposed between the depositing source and the substrate fixed to the substrate holder and depositing a part of the deposition material on the substrate through the main shutter.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: March 24, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sung-Joong Joo, You-Min Cha, Seuk-Hwan Park
  • Publication number: 20200058877
    Abstract: Provided is an organic light emitting device.
    Type: Application
    Filed: May 11, 2018
    Publication date: February 20, 2020
    Inventors: Yong Bum CHA, Sung Jae LEE, Yeon Hwan KIM, Sang Young JEON, Seong Mi CHO
  • Publication number: 20190389810
    Abstract: The present disclosure relates to a cyclic compound represented by Chemical Formula 1 and an organic light emitting device including the same. The cyclic compound used as a material of an organic material layer of the organic light emitting device, provides improved efficiency, low driving voltage, and improved lifetime characteristics.
    Type: Application
    Filed: April 26, 2018
    Publication date: December 26, 2019
    Inventors: Yong Bum CHA, Yeon Ho CHO, Yeon Hwan KIM, Sang Young JEON, Sung Jae LEE
  • Publication number: 20190378990
    Abstract: The present disclosure relates to a compound represented by Chemical Formula 1 and an organic light emitting device using the same. The compound is used as a material of an organic material layer of the organic light emitting device.
    Type: Application
    Filed: February 23, 2018
    Publication date: December 12, 2019
    Inventors: Yong Bum CHA, Sang Duk SUH, Yeon Hwan KIM, Sang Young JEON, Sung Jae LEE
  • Publication number: 20190373522
    Abstract: The present disclosure relates to a method and apparatus for optimizing mobility robustness by controlling an inter-Radio Access Technology (inter-RAT) factor. A method for supporting inter-Radio Access Network (RAN) mobility by a source Base Station (BS) in a wireless communication system includes transmitting a handover request message to a target BS, receiving a RAN information request message including a measurement report from the target BS in response to the handover request message, and determining to amend a mobility setting, if it is determined that an unnecessary handover has occurred based on the RAN information request message. The handover request message includes at least one of a Tracking Area Identifier (TAI) of a tracking area to which the source BS belongs, a global BS Identifier (ID), and an E-UTRAN (Evolved-UMTS (Universal Mobile Telecommunication System) Terrestrial Radio Access Network) Cell Global ID (ECGI).
    Type: Application
    Filed: August 14, 2019
    Publication date: December 5, 2019
    Inventors: Sung-Hwan WON, Hwa-Jin CHA
  • Patent number: 10427897
    Abstract: Provided herein may be a pick-up roller with a front-edge alignment element and a media separation apparatus using the pick-up roller. The pick-up roller may include a pick-up element configured to pick up and transfer a media sheet, and the front-edge alignment element provided at a position opposite to the pick-up element. During a process of picking up a stacked media sheet and transferring it into a space between a feed roller and a separation roller unit, the front-edge alignment element may align in advance a front edge of a media sheet disposed subsequent to the medial sheet that is being transferred, to a position of the entrance between the feed roller and the separation roller unit, and thereafter, the pick-up element may pick up the media sheet aligned by the front-edge alignment element and transfer it into the space between the feed roller and the separation roller unit.
    Type: Grant
    Filed: August 3, 2016
    Date of Patent: October 1, 2019
    Assignee: NAUTILUS HYOSUNG INC.
    Inventors: Sung Ho Park, Jin Hwan Cha, Jae Hoon Kwak
  • Patent number: 10390266
    Abstract: The present disclosure relates to a method and apparatus for optimizing mobility robustness by controlling an inter-Radio Access Technology (inter-RAT) factor. A method for supporting inter-Radio Access Network (RAN) mobility by a source Base Station (BS) in a wireless communication system includes transmitting a handover request message to a target BS, receiving a RAN information request message including a measurement report from the target BS in response to the handover request message, and determining to amend a mobility setting, if it is determined that an unnecessary handover has occurred based on the RAN information request message. The handover request message includes at least one of a Tracking Area Identifier (TAI) of a tracking area to which the source BS belongs, a global BS Identifier (ID), and an E-UTRAN (Evolved-UMTS (Universal Mobile Telecommunication System) Terrestrial Radio Access Network) Cell Global ID (ECGI).
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: August 20, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-Hwan Won, Hwa-Jin Cha
  • Publication number: 20190225568
    Abstract: The present invention relates to a method for preparing 1,3-cyclohexanedicarboxylic acid capable of exhibiting excellent activity, of enhancing the reaction efficiency and economic efficiency by using a catalyst having improved durability under the reaction conditions of high temperature and strong acid, of achieving excellent conversion rates by allowing most of reactants to participate in the reaction, and of obtaining products having high purity while minimizing by-products within a shorter period of time. The method for preparing 1,3-cyclohexanedicarboxylic acid may include: reducing isophthalic acid in the presence of a metal catalyst fixed to a silica support and containing a palladium (Pd) compound and a copper (Cu) compound in a weight ratio of 1:0.1 to 0.5.
    Type: Application
    Filed: September 27, 2017
    Publication date: July 25, 2019
    Inventors: Sung Min KIM, Mi Sun CHA, Seong Hwan CHOI, Young Heon CHOI, Sung Joon PARK, Chan Yeong YUN, Young Jong SEO
  • Patent number: 10353138
    Abstract: A display device may include a display panel having a curved shape, a first printed circuit board and a second printed circuit board, at least one first carrier tape configured to connect the first printed circuit board to the display panel, at least one second carrier tape configured to connect the second printed circuit board to the display panel, and a connection unit configured to connect the first and second printed circuit boards to each other. A part of a layer of the connection unit may be a portion of a layer included in at least one of the first and second printed circuit boards.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: July 16, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sung Dong Park, Hyeok Tae Kwon, Sang Hwan Lee, Ki Seok Cha
  • Publication number: 20190202761
    Abstract: The present invention relates to a method for preparing high-purity 1,3-cyclohexanedimethanol capable of achieving a high conversion rate by allowing most of the reactant to participate in the reaction, and of increasing reaction efficiency and economic efficiency by further simplifying the reaction process, while minimizing by-products within a shorter period of time. Specifically, the method for preparing 1,3-cyclohexanedimethanol includes reducing 1,3-cyclohexanedicarboxylic acid in the presence of a metal catalyst, which is fixed to a silica support and includes a ruthenium (Ru) compound, a tin (Sn) compound and a platinum (Pt) compound in a weight ratio of 1:0.8 to 1.2:1.2 to 2.4.
    Type: Application
    Filed: September 5, 2017
    Publication date: July 4, 2019
    Inventors: Mi Sun CHA, Seong Hwan CHOI, Sung Min KIM, Sung Joon PARK, Chan Yeong YUN, Young Heon CHOI
  • Patent number: 10296379
    Abstract: Scheduling threads in a system with many cores includes generating a thread map where a connection relationship between a plurality of threads is represented by a frequency of inter-process communication (IPC) between threads, generating a core map where a connection relationship between a plurality of cores is represented by a hop between cores, and respectively allocating the plurality of threads to the plurality of cores defined by the core map, based on a thread allocation policy defining a mapping rule between the thread map and the core map.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: May 21, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Kang Ho Kim, Kwang Won Koh, Jin Mee Kim, Jeong Hwan Lee, Seung Hyub Jeon, Sung In Jung, Yeon Jeong Jeong, Seung Jun Cha
  • Patent number: 9147626
    Abstract: A resin for an encapsulation material includes a first polysiloxane including hydrogen bound to silicon (Si—H) at its terminal end, and a second polysiloxane including an alkenyl group bound to silicon (Si-Vi) at its terminal end, wherein a ratio (Si—H/Si-Vi) of hydrogen bound to silicon (Si—H) in the first polysiloxane to the alkenyl group bound to silicon (Si-Vi) in the second polysiloxane is about 1 to about 1.
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: September 29, 2015
    Assignee: CHEIL INDUSTRIES, INC.
    Inventors: Sung-Hwan Cha, Sang-Ran Koh, Yong Kook Kim, Woo-Han Kim, Ha Neul Kim, Chi Won An
  • Publication number: 20140357792
    Abstract: A resin for an encapsulation material includes a first polysiloxane including hydrogen bound to silicon (Si—H) at its terminal end, and a second polysiloxane including an alkenyl group bound to silicon (Si-Vi) at its terminal end, wherein a ratio (Si—H/Si-Vi) of hydrogen bound to silicon (Si—H) in the first polysiloxane to the alkenyl group bound to silicon (Si-Vi) in the second polysiloxane is about 1 to about 1.
    Type: Application
    Filed: August 8, 2014
    Publication date: December 4, 2014
    Inventors: Sung-Hwan CHA, Sang-Ran KOH, Yong Kook KIM, Woo-Han KIM, Ha Neul KIM, Chi Won AN
  • Patent number: 8877877
    Abstract: A polyorganosiloxane composition, an encapsulation material, and an electronic device, the polyorganosiloxane composition including a linear first polyorganosiloxane resin including a moiety represented by the following Chemical Formula 1 and a moiety represented by the following Chemical Formula 2, the first polyorganosiloxane resin including double bonds at both terminal ends thereof, and a second polyorganosiloxane resin having a three dimensional network structure,
    Type: Grant
    Filed: August 11, 2011
    Date of Patent: November 4, 2014
    Assignee: Cheil Industries, Inc.
    Inventors: Sang-Ran Koh, June-Ho Shin, Woo-Han Kim, Sung-Hwan Cha, Hyun-Jung Ahn
  • Patent number: 8847414
    Abstract: A resin for an encapsulation material includes a first polysiloxane including hydrogen bound to silicon (Si—H) at its terminal end, and a second polysiloxane including an alkenyl group bound to silicon (Si—Vi) at its terminal end, wherein a ratio (Si—H/Si—Vi) of hydrogen bound to silicon (Si—H) in the first polysiloxane to the alkenyl group bound to silicon (Si—Vi) in the second polysiloxane is about 1 to about 1.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: September 30, 2014
    Assignee: Cheil Industries, Inc.
    Inventors: Sung-Hwan Cha, Sang-Ran Koh, Yong Kook Kim, Woo-Han Kim, Ha Neul Kim, Chi Won An
  • Patent number: 8512870
    Abstract: A transparent resin for an encapsulation material, including a polymetallosiloxane obtained from at least one metal compound represented by Chemical Formulae 1A to 1D copolymerized with a silicon compound including a compound represented by Chemical Formula 2:
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: August 20, 2013
    Assignee: Cheil Industries, Inc.
    Inventors: June-Ho Shin, Sang-Ran Koh, Sung-Hwan Cha, Hyun-Jung Ahn, Young-Eun Choi
  • Patent number: 8455605
    Abstract: A resin composition for a transparent encapsulation material, the resin composition including a polysiloxane obtained by copolymerization of a first silicon compound represented by the following Chemical Formula 1 and a second silicon compound including a compound represented by the following Chemical Formula 2,
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: June 4, 2013
    Assignee: Cheil Industries, Inc.
    Inventors: Sang-Ran Koh, June-Ho Shin, Hyun-Jung Ahn, Sung-Hwan Cha, Young-Eun Choi, Doo-Young Jung, Sang-Kyun Kim, Jong-Seob Kim
  • Patent number: D690328
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: September 24, 2013
    Assignee: Daedong Industrial Co., Ltd.
    Inventors: Sung Hwan Cha, Dong Kyun Park, Kwi Yong Cheon