Patents by Inventor Kyu Hwang

Kyu Hwang 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: 20100260661
    Abstract: A method for preparing a chalcopyrite-type semiconductor compound which is widely used as a sunlight-absorbing material. More specifically, disclosed is a method for preparing a chalcopyrite-type compound, in which microwaves are used as heat sources in the preparation of the chalcopyrite-type compound, and the chalcopyrite-type compound can be produced in a large amount in a short reaction time using a batch or continuous reactor.
    Type: Application
    Filed: September 28, 2007
    Publication date: October 14, 2010
    Applicant: Korea Research Institute of Chemical Technology
    Inventors: Young Kyu Hwang, Jong-San Chang, Sung Hwa Jhung, Jin-Soo Hwang, Hye-Young Lee
  • Publication number: 20100243405
    Abstract: There are provided a waste collection system and a method for opening/closing a waste receiving device in the waste collecting system. The waste collection system comprises: a cover formed to be opened/closed on a waste receiving device; a damper formed to be opened/closed under the waste receiving device through the cover and an interlocker; and a housing. The waste collection system further comprises: a user recognition system positioned at the front of the housing; and a driving unit for driving the opening/closing of the damper, wherein the driving unit is on/off based on the results of the user recognition system.
    Type: Application
    Filed: September 18, 2009
    Publication date: September 30, 2010
    Applicants: KOLON CONSTRUCTION CO., LTD., EUNSUNG PLANT CO., LTD.
    Inventors: Seung-Hyun KANG, Jong-Kyu HWANG, Yun-Ho JUNG, Sang-Bong CHANG
  • Publication number: 20100236011
    Abstract: There is provided an air intake for a vacuum-conveyance waste collection system, to form a high-speed air flow by allowing air to enter a conveying line through which waste being put into a waste receiving device is conveyed to a central waste collection station.
    Type: Application
    Filed: October 15, 2009
    Publication date: September 23, 2010
    Applicants: KOLON CONSTRUCTION CO., LTD., EUNSUNG PLANT CO., LTD.
    Inventors: Seung-Hyun KANG, Jong-Kyu Hwang, Yun-Ho Jung, Sang-Bong Chang
  • Publication number: 20100212103
    Abstract: There is provided a waste discharge valve for a vacuum-conveyance waste collection system in which waste put in a waste receiving device is automatically conveyed to a central waste collection station through a conveying line.
    Type: Application
    Filed: October 15, 2009
    Publication date: August 26, 2010
    Applicants: KOLON CONSTRUCTION., LTD., EUNSUNG PLANT CO., LTD.
    Inventors: Seung-Hyun Kang, Jong-Kyu Hwang, Yun-Ho Jung, Sang-Bong Chang
  • Publication number: 20100200360
    Abstract: There is provided a capacity-limited waste receiving device for a waste collection system, in which a waste receiving device in a vacuum-conveyance waste collection system (which conveys waste along a line) automatically conveying the waste to a central collecting station is improved to be more efficient.
    Type: Application
    Filed: September 18, 2009
    Publication date: August 12, 2010
    Applicants: KOLON CONSTRUCTION CO., LTD., EUNSUNG PLANT CO., LTD.
    Inventors: Seung-Hyun KANG, Jong-Kyu HWANG, Yun-Ho JUNG, Sang-Bong CHANG
  • Publication number: 20100146813
    Abstract: A method for drying substrates using isopropyl alcohol (IPA) includes: a pre-stage in which heated fluid is injected to a bottom surface of a substrate to raise a temperature of the substrate simultaneously to injection of an organic solvent to a top surface of the substrate and injection of a dry gas to the top surface thereof to improve a vaporization power of the organic solvent; and a final stage in which the injection of the heated fluid is stopped and the organic solvent and the dry gas are injected to the top surface of the substrate.
    Type: Application
    Filed: May 22, 2008
    Publication date: June 17, 2010
    Applicant: SEMES CO., LTD.
    Inventors: Young-Ju Jeong, Bok-Kyu Lee, Sun-Kyu Hwang, Jeong-Yong Bae, Soo-Bin Yong
  • Patent number: 7733837
    Abstract: An apparatus and method for adjusting a desired expression section according to input bit values in a mobile communication system that expresses only a defined partial section of the input bit values in order to make the number of output bits be less than the number of the input bits, and maps bit values included in unexpressed sections to a specific value is provided. In the apparatus and method, a measurer divides possible output bit values into at least three sections, and measures output frequencies of output bits for the respective sections for a predetermined time. A controller adjusts the desired expression section, when an output frequency for a specific section is greater than output frequencies for other sections.
    Type: Grant
    Filed: January 5, 2005
    Date of Patent: June 8, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-Hawk Lee, Hyun-Kuk Choi, Seong-Kyu Hwang, Jeoung-Gil Lee
  • Publication number: 20100128847
    Abstract: Disclosed is a method for modifying wettability of a surface of an inorganic material, the method comprising the steps of: preparing an inorganic material with a surface; and charging the surface of the inorganic material with positive surface charges obtained from photoelectron-emission by an X-ray irradiation to the surface of the inorganic material.
    Type: Application
    Filed: January 22, 2009
    Publication date: May 27, 2010
    Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATION
    Inventors: Yong Bum KWON, Byung Mook WEON, Kyu Hwang WON, Jung Ho JE
  • Publication number: 20100113843
    Abstract: Disclosed herein is a method for producing monohydric alcohols from monocarboxylic acids or derivatives thereof using a catalyst comprising ruthenium (Ru) and tin (Sn) using zinc oxide (ZnO) as both a catalyst support and an active promoter; a catalyst prepared by adding an inorganic binder such as silica, alumina or titania in a limited range to the catalyst comprising the above components in order to impart a shaping ability to the catalyst; or, a modified catalyst reformed by adding at least one reducing component selected from the group consisting of Co, Ni, Cu, Ag, Rh, Pd, Re, Ir, and Pt to the catalyst in order to improve the reducing ability of the catalyst.
    Type: Application
    Filed: February 27, 2009
    Publication date: May 6, 2010
    Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Jung Ho Lee, Jong San Chang, Young Kyu Hwang, Hyun Kwan Shin, Kwang Myung Cho, Bong Keun Song, Yong Hwan Kim
  • Publication number: 20100102427
    Abstract: A semiconductor packaging device is provided. Semiconductor package groups, a side retainer wall, and a filling layer may be located on a base plate. The side retainer wall may be located around the semiconductor package groups. The filling layer may be located between the side retainer wall and the semiconductor package groups.
    Type: Application
    Filed: October 23, 2009
    Publication date: April 29, 2010
    Applicant: Samsung Electronics Co., Ltd
    Inventors: Dong-Woo Shin, Seong-Chan Han, Sun-Kyu Hwang, Hyun-Jong Oh, Nam-Yong Ho
  • Patent number: 7691496
    Abstract: Disclosed herein is a cutting tool having high toughness and abrasion resistance, in which a coated cutting tool including a cemented carbide substrate, a cermet substrate or a ceramic substrate coated with a hard coating film by means of chemical vapor deposition, moderate temperature-chemical vapor deposition or physical vapor deposition, and/or a cemented carbide cutting tool, a cermet cutting tool or a ceramic cutting tool are subjected to wet blasting using 10-300 ?m sized particles to decrease residual tensile stress or increase residual compressive stress, thereby improving toughness, and also, reducing surface roughness of the cutting tool, thus remarkably increasing chipping resistance and flaking resistance.
    Type: Grant
    Filed: April 25, 2005
    Date of Patent: April 6, 2010
    Assignee: Korloy Inc.
    Inventors: Geun Woo Park, Chang Kyu Hwang, Yeo Kyun Yoon, Yong Hee Choi, Hyung Keun Joo, Wook Jung Sung
  • Publication number: 20100043636
    Abstract: Disclosed herein is a nanoporous hybrids formed by covalent bonding between a crystalline organic-inorganic hybrid and a gigantic mesoporous metal oxide, containing organic groups on the surface thereof, having a size of 10 nm or more. Since the covalently-bonded hybrid nanoporous composite has a large surface area, a multiple microporous structure, a large pore volume and includes an organic-inorganic hybrid having backbone flexibility, the covalently-bonded hybrid nanoporous composite can be used as materials for storing liquids and gases, such as hydrogen, methane and the like, and can be used as adsorbents, separating materials, catalysts, and the like. Further, the covalently-bonded hybrid nanoporous hybrids can be used in the application fields of biomolecule supporting, drug delivery, harmful material removal, nanoparticle supporter, sensors, catalysis, adsorbents, fluorescent materials, solar cells, and the like.
    Type: Application
    Filed: April 16, 2009
    Publication date: February 25, 2010
    Applicant: Korea Research Institute of Chemical Technology
    Inventors: Young Kyu Hwang, Jong San Jang, You Kyoung Seo, Ji Woong Yoon
  • Publication number: 20090304462
    Abstract: Provided is an apparatus for transferring slurry, which is used to transfer minerals from the bottom of the sea to the ground; and, more particularly, to an apparatus for transferring slurry, which can efficiently transfer the slurry in the state of a solid-liquid mixture containing the minerals without clogging of a transfer pipe.
    Type: Application
    Filed: June 4, 2009
    Publication date: December 10, 2009
    Inventors: Chi-Ho Yoon, Young-Ju Kim, Yong-Chan Park, Young-Kyu Hwang
  • Publication number: 20090263621
    Abstract: The present invention relates to an adsorbent using the porous organic-inorganic hybrid material(s) containing iron having a large surface area and a high pore volume, in particular, a water adsorbent. Also, it relates to an adsorbent that can be used in humidifiers, dehumidifiers, coolers/heaters, a refrigerating machine or an air conditioner, etc., which can easily absorb or desorb at 100° C. and below, and has a great adsorption amount per weight of the adsorbent. Also, the present invention relates to a novel preparation method of porous organic-inorganic hybrid material(s), in particular, a preparation method characterized by not using hydrofluoric acid, porous organic-inorganic hybrid material(s) prepared by said preparation method, and a use as an adsorbent thereof.
    Type: Application
    Filed: June 12, 2009
    Publication date: October 22, 2009
    Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Jong-San Chang, Young Kyu Hwang, Sung Hwa Jhung, Do-Young Hong, You-Kyung Seo
  • Patent number: 7601043
    Abstract: A field emission display (FED) with an integrated triode structure is provided. The FED can be manufactured without using a complex packaging process and have a significantly reduced well diameter and a significantly reduced cathode-to-anode distance. In the FED, front and rear panels form a single body using an anode insulating layer as an intermediate. A method for manufacturing the FED using anodic oxidation is also provided.
    Type: Grant
    Filed: December 26, 2003
    Date of Patent: October 13, 2009
    Assignee: Postech Foundation
    Inventors: Kun Hong Lee, Sun Kyu Hwang, Ok Joo Lee
  • Publication number: 20090227446
    Abstract: The present invention relates to a method for preparing iron-containing porous organic-inorganic hybrid materials where the organic compound ligand is bonded to a central metal and has a large surface area and pores of molecular size or nano size, by irradiating microwaves instead of heat treatments such as the conventional electric heating, etc. as the heat source of the hydrothermal or solvothermal synthesis reaction, after reacting a metal or metal salt and organic compound to form crystal nuclei by a predetermined pre-treatment operation in the presence of a solvent. In another aspect, a method of the present invention further comprises the step of purifying the obtained porous organic-inorganic hybrid materials by treating them with inorganic salt. In particular, a method of the present invention is characterized by not using a hydrofluoric acid.
    Type: Application
    Filed: May 27, 2009
    Publication date: September 10, 2009
    Applicant: Korea Research Institute of Chemical Technology
    Inventors: Jong-San CHANG, Young Kyu HWANG, Sung Hwa JHUNG, Do-Young HONG, You-Kyung SEO, Gerard FEREY, Christian SERRE
  • Publication number: 20090176124
    Abstract: A bonding pad structure for a semiconductor device includes a first lower metal layer beneath a second upper metal layer in a bonding region of the device. The lower metal layer is formed such that the metal of the lower metal layer is absent from the bonding region. As a result, if damage occurs to the structure during procedures such as probing or bonding at the bonding region, the lower metal is not exposed to the environment. Oxidation of the lower metal layer by exposure to the environment is prevented, thus improving reliability of the device.
    Type: Application
    Filed: November 5, 2008
    Publication date: July 9, 2009
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jong-Won Hong, Min-Keun Kwak, Geum-Jung Seong, Jong-Myeong Lee, Gil-Heyun Choi, Hong-Kyu Hwang
  • Patent number: 7554255
    Abstract: An electric field emission device having a triode structure is fabricated by using an anodic oxidation process. The device includes a supporting substrate, a bottom electrode layer to be used as an cathode electrode of the device, a gate insulating layer having a plurality of first sub-micro holes, a gate electrode layer having a plurality of second sub-micro holes connecting to the first sub-micro holes, an anode insulating layer having a plurality of third sub-micro holes connecting to the second sub-micro holes, a top electrode layer for hermetically sealing the device, the top electrode layer being used as an anode of the device and a plurality of emitters formed in the first sub-micro holes. The emitters are formed so as to come into as close contact as possible to the electrodes of the device, which results in decreasing a driving voltage.
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: June 30, 2009
    Assignee: Postech Foundation
    Inventors: Kun-Hong Lee, Sun-Kyu Hwang, Soo-Hwan Jeong
  • Publication number: 20090130411
    Abstract: The present invention relates to an adsorbent obtained by using porous hybrid inorganic-organic materials that have high surface area, and have pore with the size of molecules or nanometers. More specifically, the present invention relates to a water adsorbent showing facile adsorption-desorption even below 100° C., having high adsorption capacity, and having high desorption capacity when it is heated up to the temperature below 100° C. The adsorbent of the present invention can be applied to a humidifier, dehumidifier, cooler and heater. The present invention also relates to a technology to control humidity using the adsorbent.
    Type: Application
    Filed: March 7, 2007
    Publication date: May 21, 2009
    Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Jong-San Chang, Sung-Hwa Jhung, Young-Kyu Hwang
  • Publication number: 20090131703
    Abstract: The present invention relates to a synthesis method of porous hybrid inorganic-organic materials that can be applied for adsorbents, gas storages, sensors, membranes, functional thin films, catalysts, catalyst supports, encapsulating guest molecules and separation of molecules by the pore structures. More specifically, the present invention relates to the synthesis method of nanocrystalline porous hybrid inorganic-organic materials.
    Type: Application
    Filed: February 7, 2007
    Publication date: May 21, 2009
    Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Sung-Hwa Jhung, Jong-San Chang, Young-Kyu Hwang, C. Serre, G. Ferey