Patents by Inventor Yun Choi

Yun 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).

  • Publication number: 20160208028
    Abstract: The present invention relates to a preparation method of a polypropylene and a polypropylene obtained therefrom. More specifically, it relates to a method of preparing a polypropylene by using a catalyst that includes a novel metallocene compound having an excellent polymerization activity, and a polypropylene obtained by the method. According to the present invention, since the polypropylene is prepared by polymerizing propylene by using a novel metallocene compound having an excellent polymerization activity and hydrogen reactivity, the properties of the polypropylene can be easily controlled and the polypropylene having excellent mechanical properties can be obtained.
    Type: Application
    Filed: September 30, 2014
    Publication date: July 21, 2016
    Inventors: Ji Ho CHOI, Churl Young PARK, Kyung Seop NOH, Won Hee Kim, Sang JIn JEON, Ra Yun CHOI, Byung Seok KIM
  • Publication number: 20160205743
    Abstract: A stretchable display device includes: a stretchable substrate; a plurality of light emitting units on the stretchable substrate; and a plurality of reflective mirrors positioned to correspond to the light emitting units, respectively, and reflecting light emitted from the light emitting units, respectively.
    Type: Application
    Filed: September 23, 2015
    Publication date: July 14, 2016
    Inventors: Hong Shik SHIM, Young Chan KIM, Hae Yun CHOI
  • Patent number: 9389504
    Abstract: The present invention relates to a photo-curable and thermo-curable resin composition that can provide a dry film solder resist having a higher glass transition temperature and improved heat resistance reliability, and the dry film solder resist. Said resin composition may include an acid-modified oligomer including an iminocarbonate-based compound having a carboxy group (—COOH) and a photo-curable unsaturated functional group, a photo-polymerizable monomer having two or more photo-curable unsaturated functional groups, a thermo-curable binder having a thermo-curable functional group, and a photo-initiator.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: July 12, 2016
    Assignee: LG CHEM, LTD.
    Inventors: Se-Jin Ku, Byung-Ju Choi, Woo-Jae Jeong, Bo-Yun Choi, Kwang Joo Lee, Min-Su Jeong
  • Publication number: 20160197547
    Abstract: The present invention provides an apparatus for bypassing a phase current from a malfunctioning sub module in a converter. The converter includes multiple sub modules each having an energy storage unit, and at least one power semiconductor circuit which is connected in parallel to the energy storage unit and which includes a power semiconductor switch and free-wheeling diodes, wherein the sub modules are connected in series to each other. The bypass apparatus for a converter according to the present invention comprises: a vacuum switch tube for disconnecting between a first connection terminal and a second connection terminal of a malfunctioning sub module upon the occurrence of a malfunction in a specific sub module and bypassing a phase current from said malfunctioning sub module; and a control device for controlling the operation of the vacuum switch tube.
    Type: Application
    Filed: December 27, 2013
    Publication date: July 7, 2016
    Inventors: Jung Soo PARK, Hang Jun YANG, Jong Yun CHOI
  • Patent number: 9368757
    Abstract: An organic light emitting display device includes a substrate, a plurality of organic light emitting elements disposed on the substrate, the plurality of organic light emitting elements including a first organic light emitting element, a second organic light emitting element and a third organic light emitting element, an encapsulating member encapsulating the plurality of organic light emitting elements, a graded functional layers disposed on the encapsulating member, the graded functional layers including convex lenses disposed on pixel regions, and a black matrix disposed on the graded functional layer.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: June 14, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hae-Yun Choi, Jae-Ik Lim, Jin-Woo Choi
  • Publication number: 20160129976
    Abstract: Provided is a liquefied gas transfer device for reducing boil-off gas. The liquefied gas transfer device for reducing boil-off gas comprises: at least one transfer pipe formed in a vertical direction inside a quay for storing liquefied gas so as to transfer the liquefied gas; a branch pipe which is branched from a lower part of the transfer pipe to one side of the transfer pipe, and which has an end part opened toward a bottom surface of the quay; a valve which is connected to the branch pipe and/or the transfer pipe, and which opens and closes the branch pipe or the transfer pipe so as to move the liquefied gas from the transfer pipe to the branch pipe; and a resistance member disposed inside the branch pipe so as to interrupt the flow of the liquefied gas.
    Type: Application
    Filed: July 4, 2014
    Publication date: May 12, 2016
    Applicant: SAMSUNG HEAVY IND. CO., LTD.
    Inventors: Sung-Yun CHOI, Yong-Seok SONG, Seung-Hyuk KIM, Ho-Byung YOON
  • Publication number: 20160116842
    Abstract: Provided are a photocurable and thermocurable resin composition including: an acid-modified oligomer including an iminocarbonate-based compound containing a carboxyl group and a photocurable unsaturated functional group; a photopolymerizable monomer having two or more photocurable unsaturated functional groups; a thermocurable binder having a thermally curable functional group; a functional filler including one or more selected from the group consisting of carbon allotrope particles having a ceramic compound bound to a surface thereof and heat radiating ceramic particles; and a photoinitiator, and a dry film solder resist manufactured therefrom.
    Type: Application
    Filed: October 28, 2015
    Publication date: April 28, 2016
    Applicant: LG CHEM, LTD.
    Inventors: Byung Ju CHOI, You Jin KYUNG, Woo Jae JEONG, Bo Yun CHOI, Kwang Joo LEE, Min Su JEONG
  • Publication number: 20160091052
    Abstract: Provided herein is an actuator including a housing unit, a drive unit installed in the housing unit, the drive unit having a rotating shaft, a plurality of gears installed in the housing unit and rotated by rotational power of the shaft, the gears being engaged with each other, and a reinforcement part installed in an inside portion of one of the plurality of gears to create reinforcing force. Also, provided herein is an electronic apparatus having the actuator.
    Type: Application
    Filed: September 24, 2015
    Publication date: March 31, 2016
    Inventors: In-Yong PARK, Yun CHOI, Seong-Gi PARK
  • Patent number: 9293737
    Abstract: An organic light emitting diode (OLED) display includes a substrate, a light path guide layer formed on the substrate and having an inclined side wall, an organic light emitting diode (OLED) formed on the substrate and the light path guide layer, and a phase transition layer formed on the OLED and formed so as to correspond to the inclined side wall. Therefore, in the OLED display, the phase transition layer is formed in the light path guide layer so that it is possible to minimize external light reflectance increased by the light path guide layer.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: March 22, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Soo-Min Baek, Won-Sang Park, Min-Woo Kim, Il-Nam Kim, Jae-Kyoung Kim, Hae-Yun Choi
  • Publication number: 20160070408
    Abstract: An electronic apparatus is provided. The electronic apparatus includes a display configured to display an object for an application execution, an input module configured to receive a touch manipulation on an object, and a control module configured to execute a first application if the touch manipulation ends in a first region and execute a second application if the touch manipulation ends in a second region. The control module is further configured to change an area of the first region and an area of the second region according to the number of executions or execution time of the first application and the second application.
    Type: Application
    Filed: September 4, 2015
    Publication date: March 10, 2016
    Inventors: Jung Yun CHOI, Hye Jin KANG, Seung Ho SONG, Ji Min AN, Yong Whi LEE
  • Patent number: 9249210
    Abstract: Disclosed is an expression vector system for variants of coagulation Factor VIII (FVIII) and von Willebrand Factor (vWF). In detail, mutant vWF the size of which is significantly reduced by deleting exons but which has remarkably increased FVIII stabilizing and activating efficiency, and an expression vector system useful for the treatment of hemophilia which is capable of expressing the same along with FVIII are disclosed. Use of the mutant vWF with a reduced size enables effective expression of FVIII in a viral vector and significantly enhanced FVIII activity. Further, the viral vector may be effectively used to treat hemophilia through gene therapy.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: February 2, 2016
    Assignee: Korea University Industrial & Academic Collaborative Foundation
    Inventors: Sang Yun Choi, Sang Won Park
  • Publication number: 20160023269
    Abstract: A casting equipment for producing a casting with a large cross-section for a very thick steel material includes: a casting part with a passage for a molten steel for casting the molten steel into a casting; a support part arranged separately from the casting part for receiving and supporting the casting in at least one of the sides of the casting; and a solidifying part arranged outside the casting provided with a first quality control device for solidifying the casting. A casting method includes: preparing a molten steel for casting; casting the molten steel in the casting part with the passage opened or closed into a casting; conveying the casting to the solidifying part; and conveying the solidified casting to a subsequent process so as to improve the quality of the casting, thus increasing substantially the yield rate of castings.
    Type: Application
    Filed: March 14, 2014
    Publication date: January 28, 2016
    Inventors: Kyung Shik OH, Joo Dong LEE, Jeong Yun CHOI, Sung Jool KIM
  • Publication number: 20150366070
    Abstract: The present invention relates to a preparation method for a dry film solder resist (DFSR) capable of forming the DFSR having fine unevenness on a surface by a more simplified method, and a film laminate used therein. The preparation method for a dry film solder resist includes forming a predetermined photo-curable and heat-curable resin composition on a transparent carrier film having a surface on which a fine unevenness having an average roughness (Ra) of 200 nm to 2 ?m is formed; laminating the resin composition on a substrate to form a laminated structure in which the substrate, the resin composition, and the transparent carrier film are sequentially formed; exposing the resin composition and delaminating the transparent carrier film; and alkaline-developing the resin composition in a non-exposure part and performing heat-curing.
    Type: Application
    Filed: September 22, 2014
    Publication date: December 17, 2015
    Applicant: LG CHEM, LTD.
    Inventors: Min Su JEONG, You Jin KYUNG, Byung Ju CHOI, Woo Jae JEONG, Bo Yun CHOI, Kwang Joo LEE, Se Jin KU
  • Publication number: 20150357906
    Abstract: The present invention provides a converter including a plurality of sub-modules connected in series to each other, wherein each of the sub-modules includes a first half-bridge unit including a first energy storage unit, and a plurality of first power semiconductors connected in parallel to the first energy storage unit and connected in series to each other; a second half-bridge unit including a second energy storage unit, and a plurality of second power semiconductors connected in parallel to the second energy storage unit and connected in series to each other; and an auxiliary circuit unit connecting the first half-bridge unit and the second half-bridge unit; wherein the auxiliary circuit unit includes a single third power semiconductor and a single diode.
    Type: Application
    Filed: December 27, 2013
    Publication date: December 10, 2015
    Inventors: Hong Ju JUNG, Tae Gyun KIM, Hang Jun YANG, Jong Yun CHOI
  • Publication number: 20150333660
    Abstract: The present invention relates to a converter for electric power having multiple sub-modules connected in series, the sub-modules having an energy storage unit and multiple power semiconductor circuits connected in parallel to the energy storage unit, and which causes an electric current to bypass a sub-module in case the breakdown of the sub-module occurs. To this end, the converter for electric power according to the present invention has multiple sub-modules connected to each other in series, the sub-modules having an energy storage unit and at least one power semiconductor circuit that is connected in parallel to the energy storage unit and comprises multiple power semiconductor switches and freewheeling diodes, wherein each of the sub-modules comprises a bypass switching unit, which is connected in parallel to any one of said at least one power semiconductor circuit, and bypasses an electric current via the bypass switching unit.
    Type: Application
    Filed: December 27, 2013
    Publication date: November 19, 2015
    Inventors: June Sung KIM, Tae Gyun KIM, Hang Jun YANG, Jong Yun CHOI
  • Publication number: 20150303407
    Abstract: An organic light emitting diode (OLED) display includes a substrate, a light path guide layer formed on the substrate and having an inclined side wall, an organic light emitting diode (OLED) formed on the substrate and the light path guide layer, and a phase transition layer formed on the OLED and formed so as to correspond to the inclined side wall. Therefore, in the OLED display, the phase transition layer is formed in the light path guide layer so that it is possible to minimize external light reflectance increased by the light path guide layer.
    Type: Application
    Filed: June 4, 2015
    Publication date: October 22, 2015
    Inventors: Soo-Min BAEK, Won-Sang PARK, Min-Woo KIM, Il-Nam KIM, Jae-Kyoung KIM, Hae-Yun CHOI
  • Publication number: 20150301303
    Abstract: A lens module may include a lens inserted into a lens barrel. One surface of the lens facing one surface of the lens barrel in an optical axis direction may be disposed in a stress-free state, and the lens is movable relative to the lens barrel to allow optical axes of lenses to be aligned with each other.
    Type: Application
    Filed: August 8, 2014
    Publication date: October 22, 2015
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Duck Hun Kim, Kwang Yun Choi
  • Patent number: 9159776
    Abstract: An organic light emitting diode (OLED) display includes: a substrate; and a plurality of pixels positioned on the substrate. Each pixel includes a thin film transistor positioned on the substrate, an interlayer insulating layer and a light path control layer positioned on the thin film transistor, a first electrode positioned on the light path control layer and connected to the thin film transistor, an organic emission layer positioned on the first electrode, and a second electrode positioned on the organic emission layer, and the light path control layer includes a first control layer, a second control layer having a larger refractive index than the first control layer, and a middle layer having the same refractive index as the first control layer.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: October 13, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae-Kyoung Kim, Man-Seob Choi, Won-Gyun Kim, Hae-Yun Choi, Jong-In Baek
  • Patent number: 9149338
    Abstract: An end effector includes a tip part having a deformation member that is physically changed due to contact with an object, a gauge display part configured to display gauge information according to a physical change of the deformation member, and a connecting rod part connected to the tip part and configured to operate the tip part. A manipulator including an end effector configured to display physical information, which varies according to an object making contact with a tip part, on a gauge display part, an endoscope configured to obtain an image of the tip part of the end effector and an image of the gauge display part, and a control part configured to control transmission of the image obtained by the endoscope, and to control operations of the tip part and the endoscope.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: October 6, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Won Jun Ko, Jung Yun Choi, Se Gon Roh, Tae Sin Ha
  • Publication number: 20150282297
    Abstract: A printed circuit board has a substrate having a circuit pattern; a primary component receiving hole positioned on the substrate and having an inner surface electrically connected with the circuit pattern; and at least one secondary component receiving hole positioned on the substrate around the primary component receiving hole, and having an inner surface electrically connected with the circuit pattern and the inner surface of the primary component receiving hole.
    Type: Application
    Filed: June 4, 2015
    Publication date: October 1, 2015
    Applicant: Tyco Electronics AMP Korea Ltd.
    Inventors: Yang Yun Choi, Ok Ky Beak