Patents by Inventor Dong Hyun An

Dong Hyun An 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: 20140125872
    Abstract: A broadcast receiving apparatus to minimize standby power and a method thereof. The broadcast receiving apparatus includes a sensor to detect variation in an inputted alternating current (AC) voltage and outputting a direct current (DC) voltage corresponding to the detection result, and a controller to detect variation in currents based on a digital voltage corresponding to the DC voltage and to determine the on/off state of an external apparatus, connected to the broadcast receiving apparatus, according to the detection result of the controller. Therefore, it is possible to determine whether the external apparatus is switched on or off according to a variation in power supplied to the external apparatus, to cut off a power supplied to the external apparatus based on the determination result, and to selectively control a power supplied to components of the broadcast receiving apparatus based on power saving data.
    Type: Application
    Filed: January 13, 2014
    Publication date: May 8, 2014
    Applicant: Samsung Electronics Co., Ltd
    Inventor: Dong-hyun CHANG
  • Publication number: 20140127848
    Abstract: Provided are a nitride semiconductor light-emitting device comprising a polycrystalline or amorphous substrate made of AlN; a plurality of dielectric patterns formed on the AlN substrate and having a stripe or lattice structure; a lateral epitaxially overgrown-nitride semiconductor layer formed on the AlN substrate having the dielectric patterns by Lateral Epitaxial Overgrowth; a first conductive nitride semiconductor layer formed on the nitride semiconductor layer; an active layer formed on the first conductive nitride semiconductor layer; and a second conductive nitride semiconductor layer formed on the active layer; and a process for producing the same.
    Type: Application
    Filed: January 10, 2014
    Publication date: May 8, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong Hyun CHO, Masayoshi KOIKE, Yuji IMAI, Min Ho KIM, Bang Won OH, Hun Joo HAHM
  • Patent number: 8715429
    Abstract: There is provided a rolled steel with excellent toughness, a drawn wire rod prepared by drawing the rolled steel, and a method for manufacturing the same, in which even if a heating step is omitted, the toughness of the steel can be improved by securing a degenerated pearlite structure in an internal structure of the rolled steel by controlling a content of Mn among components and cooling conditions, and then preventing C diffusion. The rolled steel according to the present invention includes C: 0.15˜0.30%, Si: 0.1˜0.2%, Mn: 1.8˜3.0%, P: 0.035% or less, S: 0.040% or less, the remainder Fe, and other inevitable impurites, as a percentage of weight, in which the microstucture of the rolled steel is composed of ferrite and pearlite including cementite with 150 nm or less of thickness.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: May 6, 2014
    Assignee: POSCO
    Inventors: You-Hwan Lee, Dong-Hyun Kim, Sang-Yoon Lee, Ha-Ni Kim, Yong-Sik Park
  • Patent number: 8716525
    Abstract: The present invention relates to a method and apparatus for continuous recovery of (meth)acrylic acid, and more specifically to a method of continuous recovery of (meth)acrylic acid, including: conducting gas phase oxidation of at least one compound selected from the group consisting of propane, propylene, butane, i-butylene, t-butylene, and (meth)acrolein in the presence of a catalyst to obtain a mixed gas containing (meth)acrylic acid; quenching the (meth)acrylic acid-containing mixed gas to remove high boiling point by-products in the (meth)acrylic acid-containing mixed gas; contacting the high boiling point by-product-free (meth)acrylic acid-containing mixed gas with water or an aqueous solution to obtain an aqueous solution containing (meth)acrylic acid; and purifying the aqueous solution containing (meth)acrylic acid to obtain (meth)acrylic acid.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: May 6, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Se-Won Baek, Hyun-Kyu Kim, Dong-Hyun Cho, Jun-Seok Ko
  • Publication number: 20140118331
    Abstract: A display device includes a display panel including gate lines, data lines, and pixels each connected to a corresponding gate line and a corresponding data line, a gate driver configured to drive the gate lines, a data driver configured to drive the data lines, and a timing controller configured to generate control signals to control the data driver and to apply a vertical synchronization start signal including a first pulse, a second pulse, a first gate pulse signal, and a second gate pulse signal to the gate driver. The gate driver applies gate driving signals to the gate lines to pre-charge the pixels in response to the first pulse of the vertical synchronization start signal and the first gate pulse signal, and to main-charge the pixels in response to the second pulse of the vertical synchronization start signal and the second gate pulse signal.
    Type: Application
    Filed: July 23, 2013
    Publication date: May 1, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: ByungKil JEON, Yong-Bum KIM, Dong-Hyun YEO, Suhyun JEONG, Heebum PARK, Junpyo LEE
  • Publication number: 20140119249
    Abstract: An apparatus and a method for allocating resources for transmitting an HARQ ACK/NACK signal for a downlink subframe using a PUCCH format 3 in a time division duplex (TDD) system using a single carrier are provided. Since the resources are allocated through a resource indicator transmitted using a power control field transmitted on a PDCCH of the downlink subframe, the resources for transmitting the HARQ ACK/NACK signal may be allocated by effectively using resources allocated to a duplicately transferred control signal.
    Type: Application
    Filed: January 3, 2014
    Publication date: May 1, 2014
    Applicant: Pantech Co., Ltd.
    Inventor: Dong Hyun PARK
  • Patent number: 8707743
    Abstract: The present invention relates to a laundry machine using steam. The laundry machine includes a drum for holding laundry, a steam generator for generating steam, a water supply unit for supplying water to the steam generator, an additive supply unit for supplying additive to the steam generator, and a supply line for supplying the steam and the additive to the drum.
    Type: Grant
    Filed: August 1, 2007
    Date of Patent: April 29, 2014
    Assignee: LG Electronics Inc.
    Inventors: Sang Hun Bae, Dong Yoon Kim, Chul Jin Choi, Dong Hyun Kim, Young Bok Son
  • Patent number: 8707999
    Abstract: The present invention relates to a method for manufacturing a solid body having a superhydrophobic surface structure formed by using a surface treatment of a metal body, a replication process, and a polymer sticking phenomenon to increase efficiency of fluid transfer and prevent foreign materials from being accumulated in the tube, and a superhydrophobic fluid transfer tube using the method. The superhydrophobic fluid transfer tube includes a fluid guider and a solid body provided on a fluid contact surface of the fluid guider and has micrometer-scaled unevenness and nanometer-scaled protrusions.
    Type: Grant
    Filed: September 19, 2007
    Date of Patent: April 29, 2014
    Assignee: Postech Academy-Industry Foundation
    Inventors: Dong-Hyun Kim, Sang-Min Lee, Il-Sin Bae, Dong-Seob Kim, Duk-Hyun Choi, Chang-Woo Lee, Ji-Hoon Jeon, Seong-Ho Son, Tae-Chul Moon, Woon-Bong Hwang, Joon-Won Kim, Hyun-Chul Park, Kun-Hong Lee
  • Patent number: 8710276
    Abstract: Disclosed are a catalyst composition for hydroformylation of olefin compounds, comprising a specific phosphine ligand and a transition metal catalyst, and a hydroformylation process using the same. Through a hydroformylation process using the catalyst composition according to the present invention, a suitable selectivity of iso-aldehyde can be maintained, catalyst stability can be improved, the amount of used ligand can be reduced and superior catalyst activity can be obtained.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: April 29, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Dong Hyun Ko, Sung Shik Eom, O Hak Kwon, Hye Won Yang, Jae Hui Choi
  • Publication number: 20140113963
    Abstract: An antibiotic composition including erythorbyl laurate as an active ingredient and a use thereof are disclosed. Erythorbyl laurate is confirmed to have antibiotic effects on Gram-positive bacteria and thus is used as an antibiotic agent in foods, cosmetics, feeds, and the like and utilized in the form of a hand cleaner and other medicines for external application.
    Type: Application
    Filed: February 28, 2013
    Publication date: April 24, 2014
    Applicant: SNU R&DB Foundation
    Inventors: Pahn Shick Chang, Kyung Min Park, Da Eun Lee, Dong Hyun Kang
  • Publication number: 20140111564
    Abstract: A timing controller for a display apparatus includes a dithering unit outputting a first signal in which bit widths of image signals are reduced, an image pattern detector detecting an image pattern of the image signals and outputting a dithering off signal corresponding to the detected image pattern, a dithering selector receiving the first signal and converts the first signal to a second signal in response to the dithering off signal, and a response time compensator generating a present image signal from the second signal and compensates a liquid crystal response time in accordance with a difference between the present image signal and a first previous image signal to output a data signal.
    Type: Application
    Filed: April 24, 2013
    Publication date: April 24, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: ByungKil JEON, Yong-Bum Kim, Jaehyoung Park, Dong-Hyun Yeo, Suhyun Jeong
  • Patent number: 8703573
    Abstract: A method of manufacturing the semiconductor device includes sequentially forming first to third mold layer patterns on a substrate and spaced apart from each other, forming a first semiconductor pattern between the first mold layer pattern and the second mold layer pattern, and a second semiconductor pattern between the second mold layer pattern and the third mold layer pattern, forming a first trench between the first mold layer pattern and the third mold layer pattern by removing a portion of the second mold layer pattern and portions of the first and second semiconductor patterns, depositing a material for a lower electrode conformally along side and bottom surfaces of the first trench, and forming first and second lower electrodes separated from each other on the first and second semiconductor patterns, respectively, by removing a portion of the material for a lower electrode positioned on the second mold layer pattern.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: April 22, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Gyu-Hwan Oh, Dong-Hyun Kim, Kyung-Min Chung, Dong-Hyun Im
  • Patent number: 8703995
    Abstract: The present invention relates to a method of preparing an alkyl (meth)acrylate, and more specifically to a method of preparing an alkyl (meth)acrylate which comprises the steps of: carrying out an esterification reaction with reactants comprising an alkanol and (meth)acrylic acid in the presence of an organic acid catalyst with a conversion rate of about 70% or more; supplying reaction products of the esterification reaction to a distillation tower equipped with a reboiler at the lower end to purify them; recovering a upper discharge comprising an alkyl (meth)acrylate and water at the upper part of the distillation tower and recovering a lower discharge comprising high boiling materials and water at the lower part of the distillation tower; separating the lower discharge of the distillation tower into a water layer and an organic layer; and recirculating the water layer separated from the lower discharge so as to be used in the esterification reaction, wherein each of the steps occurs continuously and the low
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: April 22, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Jun-Seok Ko, Hyun-Kyu Kim, Se-Won Baek, Dong-Hyun Cho
  • Patent number: 8703237
    Abstract: Provided are methods of forming a material layer by chemically adsorbing metal atoms to a substrate having anions formed on the surface thereof, and a method of fabricating a memory device by using the material layer forming method. Accordingly, a via hole with a small diameter can be filled with a material layer without forming voids or seams. Thus, a reliable memory device can be obtained.
    Type: Grant
    Filed: May 14, 2009
    Date of Patent: April 22, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hye-young Park, Sung-lae Cho, Jin-il Lee, Do-hyung Kim, Dong-hyun Im
  • Publication number: 20140105792
    Abstract: The present invention relates to a method and apparatus for continuous recovery of (meth)acrylic acid, and more specifically to a method of continuous recovery of (meth)acrylic acid, including: conducting gas phase oxidation of at least one compound selected from the group consisting of propane, propylene, butane, i-butylene, t-butylene, and (meth)acrolein in the presence of a catalyst to obtain a mixed gas containing (meth)acrylic acid; quenching the (meth)acrylic acid-containing mixed gas to remove high boiling point by-products in the (meth)acrylic acid-containing mixed gas; contacting the high boiling point by-product-free (meth)acrylic acid-containing mixed gas with water or an aqueous solution to obtain an aqueous solution containing (meth)acrylic acid; and purifying the aqueous solution containing (meth)acrylic acid to obtain (meth)acrylic acid.
    Type: Application
    Filed: December 19, 2013
    Publication date: April 17, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Se-Won BAEK, Hyun-Kyu KIM, Dong-Hyun CHO, Jun-Seok KO
  • Publication number: 20140106423
    Abstract: Provided is a method of preparing piceatannol, and more particularly, to a method of preparing piceatannol from resveratrol using bacterial cytochrome P450 BM3 (CYP102A1) or mutants thereof, and a composition and a kit therefor.
    Type: Application
    Filed: September 30, 2013
    Publication date: April 17, 2014
    Applicant: GLO BIOTECH
    Inventors: Chul Ho YUN, Dong Hyun KIM
  • Patent number: 8697272
    Abstract: A rechargeable battery includes: an electrode assembly including: a positive electrode, a negative electrode and a separator between the positive electrode and the negative electrode that are wound together; a case housing the electrode assembly; a terminal electrically connected to the electrode assembly; and an insulating member installed between the electrode assembly and the case wherein the insulating member has a base and four insulating plates extending from the base.
    Type: Grant
    Filed: February 16, 2010
    Date of Patent: April 15, 2014
    Assignees: Samsung SDI Co., Ltd., Robert Bosch GmbH
    Inventor: Dong-Hyun Lee
  • Patent number: 8698604
    Abstract: An RFID reader control system and method is provided. A protocol for controlling an RFID reader and an RFID reader control unit of a mobile phone is defined. Messages, information, commands, responses, and notification are constructed and transmitted between the RFID reader and the RFID reader control unit.
    Type: Grant
    Filed: April 25, 2006
    Date of Patent: April 15, 2014
    Assignee: LG Electronics Inc.
    Inventors: Seung Hyup Ryoo, Jin Tae Kim, Sang Cheol Min, Hee Seung Kim, Jae Joon Park, Dong Hyun Lee, Yong Sam Kim
  • Patent number: 8700035
    Abstract: A mobile terminal including a wireless communication unit configured to wirelessly communicate with wireless devices to be connected with the mobile terminal, a display unit configured to display information about the wireless devices, an input unit configured to input search information including at least one of a distance range to search for the wireless devices and a type of the wireless devices, and a controller configured to control the wireless communication unit to search for the wireless devices based on the input search information and to control the display unit to display responding wireless devices that responded to the search by the wireless communication unit according to the input search information.
    Type: Grant
    Filed: October 15, 2008
    Date of Patent: April 15, 2014
    Assignee: LG Electronics Inc.
    Inventor: Dong-Hyun Lee
  • Publication number: 20140096703
    Abstract: Disclosed are a plasticizer that, when used for a heat-resistant resin composition, improves elongation retention, enhances aging resistance and heat resistance, and exhibits superior tensile strength, tensile strength retention, heating loss or the like before and after heating, thus contributing to enhancement in physical properties of the heat-resistant resin, a plasticizer composition, a heat-resistant resin composition and a method for preparing the same.
    Type: Application
    Filed: October 11, 2013
    Publication date: April 10, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Mi Yeon Lee, Dong Hyun Ko, Hyun Kyu Kim, Da Won Jung, Gyu Il Lee