Patents by Inventor Seung-Mo Hong

Seung-Mo Hong 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: 10968309
    Abstract: Embodiments relate to a polymerizable composition for a plastic lens. The polymerizable composition for a plastic lens according to the embodiment further comprises a diketone compound for the purpose of controlling the strong activity of a halogenated tin-based catalyst. Further, the polymerizable composition is preliminarily polymerized at a low temperature of 5 to 20° C. for a certain period of time, specifically 1 to 20 hours. Since it is possible to stabilize the reaction rate of the composition and to properly control the viscosity of the composition, a more stable pot life is attained, thereby improving the workability. In addition, the generation of bubbles is prevented, thereby improving the transparency of the resin. Hence, the polymerizable composition can be advantageously used for fabricating various plastic lenses such as eyeglass lenses, camera lenses, and the like.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: April 6, 2021
    Assignee: SKC CO., LTD.
    Inventors: Seung Mo Hong, Jung Hwan Myung, Junghwan Shin
  • Publication number: 20210040387
    Abstract: A method of preparing a quantum dot nanoparticle is disclosed. The method includes the step of reacting one or more cation precursors including one or more of Groups 12 and 13 elements with one or more anion precursors including one or more of Group 15 elements to prepare a quantum dot nanoparticle, wherein the reaction of the cation precursors and the anion precursors is carried out while supplying a compound represented by Chemical Formula 1. A quantum dot nanoparticle prepared by the preparation method, a quantum dot nanoparticle having a core-shell structure containing the quantum dot nanoparticle as a core, and a light emitting element comprising the quantum dot nanoparticle having a core-shell structure are also disclosed.
    Type: Application
    Filed: July 29, 2020
    Publication date: February 11, 2021
    Applicants: SHIN-A T&C, UNIAM
    Inventors: Seung Mo Hong, Jin Han Song, Hyeok Jin Hong, Seok Kyu Park, Ju Young Lee, In Won Lee
  • Patent number: 10899867
    Abstract: The embodiments relate to a polythiol composition for a plastic optical lens and a polythiourethane-based plastic optical lens prepared therefrom. In the embodiments, a first polythiol compound having an ester group and a mercapto group only as a hydrogen-bondable functional group and a second polythiol compound having an ester group and a hydrogen-bondable functional group other than a mercapto group are used in an appropriate amount. Thus, it is possible to control the viscosity of a polymerizable composition at the initial stage of polymerization at a low temperature of 5 to 15° C. and to stabilize the rate of increase in the viscosity of the composition and the reaction rate thereof, thereby preventing the generation of striae, bubbles, and the like. Further, various plastic lenses such as eyeglass lenses, camera lenses, and the like having excellent appearance characteristics (without striae and bubbles) and excellent optical characteristics can be obtained from the composition.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: January 26, 2021
    Assignee: SKC CO., LTD.
    Inventors: Jongmin Shim, Seung Mo Hong, Hyeon Myeong Seo, Junghwan Shin
  • Publication number: 20210013382
    Abstract: A light conversion film is disclosed. The light conversion film includes a first transparent support layer and a second transparent support layer are formed on upper and lower surfaces of a quantum dot layer, respectively. The quantum dot layer contains 0.4 to 2.0% by weight of quantum dot particles containing 5% by weight or more and less than 35% by weight of cadmium; 0.05 to 0.75% by weight of cadmium-free quantum dot particles; 0.1 to 10% by weight of scattering agent; and 75 to 98% by weight of matrix material, based on the total weight of the quantum dot layer. A backlight unit for a display device including the light conversion film is disclosed.
    Type: Application
    Filed: July 7, 2020
    Publication date: January 14, 2021
    Applicants: SHIN-A T&C, UNIAM
    Inventors: Seung Mo HONG, Jin Han SONG, Hyeok Jin HONG, In Won LEE
  • Patent number: 10865307
    Abstract: An embodiment relates to a polymerizable composition for a plastic lens. The polymerizable composition for a plastic lens according to the embodiment comprises a nonhalogenated tin-based catalyst and a diketone compound as a low-temperature reaction rate controlling agent. Accordingly, the polymerizable composition has a more stable pot life so that the polymerization rate can be appropriately controlled, thereby improving the reactivity and the workability, and that the generation of bubbles are prevented, thereby improving the transparency of the resin.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: December 15, 2020
    Assignee: SKC CO.. LTD.
    Inventors: Seung Mo Hong, Jung Hwan Myung, Junghwan Shin
  • Publication number: 20200290957
    Abstract: An embodiment relates to a polymeric composition for a polythiourethane-based optical material, wherein the polymeric composition, comprising a particular additive, may appropriately adjust the reactivity of an isocyanate such that viscosity is maintained low for a predetermined period of time, and thus is capable of preparing a high-quality polythiourethane-based optical material, without a complicated purification process. Moreover, a polythiourethane-based optical material according to an embodiment has not only a uniform refractive index, but also a low yellow index, and thus may be used as a variety of plastic optical lenses, such as an eyeglass lens or a camera lens and the like.
    Type: Application
    Filed: June 26, 2017
    Publication date: September 17, 2020
    Inventors: Seung Mo HONG, Jung Hwan MYUNG, Hyeon Myeong SEO, Junghwan SHIN
  • Patent number: 10759895
    Abstract: An embodiment relates to a polymerizable composition for an optical material and a polythiourethane-based compound prepared therefrom. The polythiourethane-based compound is excellent in appearance with low generation rates of stirae and bubbles.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: September 1, 2020
    Assignee: SKC CO., LTD.
    Inventors: Jongmin Shim, Junghwan Shin, Seung Mo Hong, Hyuk Hee Han, Jung Hwan Myung
  • Patent number: 10723697
    Abstract: Provided is a preparation of a thioether-based polythiol in a high purity using a metal monosulfide for the incorporation of a thioether group, wherein the content of such components as a metal polysulfide present in the metal monosulfide is controlled to a predetermined level or lower. As a result, an optical lens of high quality with a high refractive index can be produced using the polythiol.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: July 28, 2020
    Assignee: SKC CO., LTD.
    Inventors: Junghwan Shin, Seung Mo Hong, Jongmin Shim, Hyuk Hee Han, Jung Hwan Myung, Hyeon Myeong Seo, Yu Jeong Song, JooYoung Jung
  • Patent number: 10723696
    Abstract: The xylylene diisocyanate composition according to the embodiments has a chlorine content of 100 to 1,000 ppm to improve the stability, so that the degradation of the reactivity can be prevented even when it is stored for a long period of time. Therefore, even if the xylylene diisocyanate composition according to the embodiments is used after it has been stored for a long period of time for sale or the like, the xylylene diisocyanate composition can be polymerized with a thiol to produce a polythiourethane-based optical material having excellent properties such as refractive index, Abbe number, transparency, glass transition temperature, yellowness index, and the like. Therefore, it can be advantageously used in the field of eyeglass lenses, camera lenses, and the like.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: July 28, 2020
    Assignee: SKC CO., LTD.
    Inventors: Junghwan Shin, Hyuk Hee Han, Seung Mo Hong, Sang Mook Kim
  • Publication number: 20200224095
    Abstract: A quantum dot particle in which an ionic liquid is ion-bonded is disclosed. The quantum dot particle includes a quantum dot having a core/shell nanostructure; and an ionic liquid compound represented by following Chemical Formula 1, bonded to the surface of the quantum dot, wherein the quantum dot and the ionic liquid compound form an ionic bond: wherein, R1 and R2 are each independently a branched or unbranched hydrocarbon group having 1 to 22 carbon atoms, and X— is a monovalent anion, wherein the hydrocarbon group includes a saturated or unsaturated group and may include one or more hetero atoms.
    Type: Application
    Filed: January 14, 2020
    Publication date: July 16, 2020
    Applicants: SHIN-A T&C, UNIAM
    Inventors: Seung Mo Hong, Jin Han Song, Sung Hun Choi, Hyeok Jin Hong
  • Patent number: 10669367
    Abstract: An embodiment relates to a polythiol composition for a plastic lens. The polythiol composition for a plastic lens according to the embodiment can produce a clear and transparent plastic lens by way of polymerizing such raw materials as a polythiol compound, an isocyanate, a photoactive color correcting agent, and the like, followed by a simple post-process such as irradiation of ultraviolet rays. In addition, since the process for preparing the lens is simple and economical, the lens is advantageously used for manufacturing various plastic lenses such as eyeglass lenses and camera lenses.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: June 2, 2020
    Assignee: SKC CO., LTD.
    Inventors: Seung Mo Hong, Jongmin Shim, Junghwan Shin
  • Publication number: 20200165467
    Abstract: The present invention relates to a photocurable resin composition, a method for preparing the same, and an optical film comprising the same, more specifically, the photocurable resin composition comprises organophosphate-based (meth)acrylate; and a phenolic compound or a phosphate compound containing phenolic —OH. Thus, since the photocurable resin composition can ensure storage stability, it is suitable as a material for a transparent display.
    Type: Application
    Filed: November 26, 2019
    Publication date: May 28, 2020
    Applicants: SHIN-A T&C, UNIAM
    Inventors: Seung Mo HONG, Jin Han SONG, Sung Hun CHOI, Won Jong SONG, In Won LEE
  • Publication number: 20200157420
    Abstract: The present invention relates to a composition for forming a quantum dot layer comprising: at least one active energy ray-curable compound (A) having an ethylenically unsaturated double bond, at least one thiol compound (B) having at least two mercapto groups in one molecule, a photo-initiator (C); quantum particles (D), and scattering particles (E), wherein the composition contains 0.20-0.80 equivalents of the compound (B) per one equivalent of the compound (A), and the W value of the compound (A) calculated by Math formula 1 is 3.0 or more, and the present invention also relates to a quantum dot film, a backlight unit, and a liquid crystal display.
    Type: Application
    Filed: November 14, 2019
    Publication date: May 21, 2020
    Applicants: SHIN-A T&C, UNIAM
    Inventors: Seung Mo Hong, Jin Han Song, Won Jong Song, In Won Lee
  • Publication number: 20200055951
    Abstract: The present invention relates to an antibody specifically binding to a pancreatic adenocarcinoma upregulated factor (PAUF) protein and use thereof. The antibody of the present invention binds to a PAUF protein with high specificity and affinity and thereby inhibits the proliferation, migration, invasion, and in vivo growth, and thus the antibody of the present invention can be effectively used in the field of diagnosis and treatment of diseases such as cancer in which PAUF proteins are overexpressed.
    Type: Application
    Filed: August 16, 2017
    Publication date: February 20, 2020
    Applicants: DONG-A UNIVERSITY RESEARCH FOUNDATION FOR INDUSTRY-ACADEMY COOPERATION, PRESTIGE BIOPHARMA PTE. LTD.
    Inventors: Sang Seok KOH, Yeon Jeong KIM, So Eun YOUN, Song Cheol KIM, Seung-Mo HONG, Seong Yun JEONG
  • Patent number: 10435512
    Abstract: Embodiments relate to a polythiol composition for a plastic optical lens and a polythiourethane-based plastic optical lens prepared therefrom. In the embodiments, a first polythiol compound having mercapto groups only as a hydrogen-bondable functional group and a second polythiol compound having mercapto groups as a hydrogen-bondable functional group and a hydrogen-bondable functional group other than a mercapto group are used in an appropriate amount. Thus, not only is it possible to control the viscosity of a polymerizable composition at the initial stage of polymerization at a low temperature of 5 to 15° C. and to stabilize the rate of increase in the viscosity of the composition and the reaction rate thereof, but also the change in the viscosity at a low temperature is low, thereby preventing the generation of striae, bubbles, and the like.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: October 8, 2019
    Assignee: SKC CO., LTD.
    Inventors: Jongmin Shim, Jung Hwan Myung, Seung Mo Hong, Hyuk Hee Han, Junghwan Shin, Hyeon Myeong Seo
  • Publication number: 20190292144
    Abstract: An embodiment relates to an aromatic polythiol compound for optical materials, and the aromatic polythiol compound according to the embodiment contains a phenyl group and a large number of sulfur atoms in its polythiol structure so that a polymerizable composition and an optical material obtained therefrom have excellent optical properties such as high refractive index and low specific gravity, as well as excellent mechanical properties such as low cure shrinkage; thus, they can be advantageously used for producing various plastic optical lenses such as eyeglass lenses and camera lenses.
    Type: Application
    Filed: July 6, 2017
    Publication date: September 26, 2019
    Inventors: Seung Mo HONG, Hyeon Myeong SEO, Jongmin SHIM, Sang Mook KIM, Jung Hwan MYUNG, Junghwan SHIN
  • Publication number: 20190263846
    Abstract: Embodiments relate to a polymerizable composition comprising a phosphorus-based mold releasing agent for an optical use whose preparation process is improved, and a process for preparing the phosphorus-based mold releasing agent. The phosphorus-based mold releasing agents can be prepared more easily and conveniently by using phosphorous pentoxide, which can easily react with a monoalcohol and/or water at room temperature in the absence of a catalyst or a solvent. In addition, byproducts are not generated during the reaction. Thus, when a lens is produced by using the mold release agent obtained therefrom, it is possible to prevent a defective appearance of the lens that may be caused by byproducts, thereby further enhancing the appearance properties thereof. Further, since separate steps for removing byproducts, specifically, such steps as washing and filtration, are not required, wastewater is not generated.
    Type: Application
    Filed: February 22, 2019
    Publication date: August 29, 2019
    Inventors: Seung Mo HONG, Jongmin SHIM, Jung Hwan MYUNG, Junghwan SHIN
  • Publication number: 20190225755
    Abstract: Embodiments relate to a polythiol composition for a plastic optical lens and a polythiourethane-based plastic optical lens prepared therefrom. In the embodiments, a first polythiol compound having mercapto groups only as a hydrogen-bondable functional group and a second polythiol compound having mercapto groups as a hydrogen-bondable functional group and a hydrogen-bondable functional group other than a mercapto group are used in an appropriate amount. Thus, not only is it possible to control the viscosity of a polymerizable composition at the initial stage of polymerization at a low temperature of 5 to 15° C. and to stabilize the rate of increase in the viscosity of the composition and the reaction rate thereof, but also the change in the viscosity at a low temperature is low, thereby preventing the generation of striae, bubbles, and the like.
    Type: Application
    Filed: December 19, 2018
    Publication date: July 25, 2019
    Inventors: Jongmin SHIM, Jung Hwan MYUNG, Seung Mo HONG, Hyuk Hee HAN, Junghwan SHIN, Hyeon Myeong SEO
  • Publication number: 20190202969
    Abstract: The embodiments relate to a polythiol composition for a plastic optical lens and a polythiourethane-based plastic optical lens prepared therefrom. In the embodiments, a first polythiol compound having an ester group and a mercapto group only as a hydrogen-bondable functional group and a second polythiol compound having an ester group and a hydrogen-bondable functional group other than a mercapto group are used in an appropriate amount. Thus, it is possible to control the viscosity of a polymerizable composition at the initial stage of polymerization at a low temperature of 5 to 15° C. and to stabilize the rate of increase in the viscosity of the composition and the reaction rate thereof, thereby preventing the generation of striae, bubbles, and the like. Further, various plastic lenses such as eyeglass lenses, camera lenses, and the like having excellent appearance characteristics (without striae and bubbles) and excellent optical characteristics can be obtained from the composition.
    Type: Application
    Filed: December 28, 2018
    Publication date: July 4, 2019
    Inventors: Jongmin SHIM, Seung Mo HONG, Hyeon Myeong SEO, Junghwan SHIN
  • Publication number: 20190202968
    Abstract: An embodiment relates to a polymerizable composition for an optical material and a polythiourethane-based compound prepared therefrom. The polythiourethane-based compound is excellent in appearance with low generation rates of stirae and bubbles.
    Type: Application
    Filed: December 26, 2018
    Publication date: July 4, 2019
    Inventors: Jongmin SHIM, Junghwan SHIN, Seung Mo HONG, Hyuk Hee HAN, Jung Hwan MYUNG