Patents by Inventor Chang Song

Chang Song 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: 9059470
    Abstract: A cathode for a fuel cell includes a gas diffusion layer contacting with a separator having a channel and a catalyst layer interposed between the gas diffusion layer and an electrolyte membrane. The catalyst layer of the cathode has two portions with different water-repelling properties, and a portion of the catalyst layer that does not face a channel has a higher water-repelling property than a portion that faces a channel. This cathode controls a water-repelling property of the catalyst layer differently according to locations, so it is possible to keep an amount of moisture in an electrode in a suitable way and to restrain generation of flooding, thereby improving the performance of the cell.
    Type: Grant
    Filed: May 9, 2013
    Date of Patent: June 16, 2015
    Assignee: LG CHEM, LTD.
    Inventors: Hyuk Kim, Won-Ho Lee, Chang-Song Lee, Seong-Uk Jeong, Sang-Hyun Lee
  • Publication number: 20150161091
    Abstract: A terminal device includes a storage medium configured to store a first string and a second string relevant to the first string, a display configured to display the first string on a first screen and the second string on a second screen, and a controller configured to generate sentence-by-sentence matching information between the first string and the second string, and control the scroll of the first screen and the second screen based on the sentence-by-sentence matching information when a certain part of the first string or the second string is selected or a scroll control command for the first screen or the second screen is input. A method includes controlling a scroll of the second screen to allow a corresponding part of the second string matching with a certain part of the first string to be displayed on the second screen when the certain part is selected.
    Type: Application
    Filed: June 20, 2014
    Publication date: June 11, 2015
    Inventors: Kyo Yeol Kim, Hae Chang Song, Jeong Hyun Ha, Sang Ki Kang
  • Patent number: 9017726
    Abstract: The present invention relates to a poly(organophosphazene)-superparamagnetic nanoparticle complex including a biodegradable and thermosensitive poly(organophosphazene) and a iron oxide (Fe3O4, Magnetite)-series ferrite superparamagnetic nanoparticle, a preparation method, and uses of carrying a physiologically-active material, a bio-material and a biomaterial for cancer hyperthermia. The iron oxide is used as a MRI contrast agent for T?2 and T2* weighted image, and the poly(organophosphazene) shows a sol-to-gel behavior depending upon the temperature change. The complex is a bound-type where the superparamagnetic ferrite nanoparticle is bonded to phosphazene-based polymer via hydrophobic binding, and a mixed-type where the superparamagnetic ferrite nanoparticle is physically mixed with the phosphazene-based polymer.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: April 28, 2015
    Assignee: Korea Institute of Science and Technology
    Inventors: Soo-Chang Song, Jang Il Kim
  • Publication number: 20140340748
    Abstract: An apparatus for controlling a color of a film includes a dyeing bath to dip a washed PVA film in an aqueous iodine solution and an aqueous potassium solution and then dye the PVA film therewith, a complementary bath to dip the PVA film in an aqueous potassium solution and then dye the PVA film therewith, a device oven to dry the PVA film having the oriented iodine and potassium, a 4-stage oven to dry the PVA film dried in the device oven, and a central controller to predict a color value of the polarizing film.
    Type: Application
    Filed: September 20, 2012
    Publication date: November 20, 2014
    Inventors: Chang Song Lee, Ho Kyung Lee, Eungki Lee, DaeHyeon Kim, Eung Jin Jang
  • Publication number: 20140242330
    Abstract: The present invention relates to an irregularly formed waterproof panel having a hollow protrusion for waterproofing, and to a waterproofing construction using same. The present invention provides: an irregularly formed waterproof panel in which a complex waterproofing layer is formed using the irregularly formed waterproof panel having a hollow protrusion to prevent a waterproofing foundation from being cracked or to prevent a waterproofing layer from being damaged due to the behavior of a joint, and to provide permeability to air; and a waterproofing construction using same.
    Type: Application
    Filed: August 29, 2012
    Publication date: August 28, 2014
    Applicants: ARCHIVEN E & C CO., LTD., ARCHIVEN CO., LTD.
    Inventor: Byung-Chang Song
  • Patent number: 8767296
    Abstract: Disclosed herein is an apparatus for preparation of a film exhibiting polarizing properties by dyeing a substrate film with iodine and then orienting the same through a continuous process, comprising a first bath equipped with a thermometer to measure a temperature of the first bath; a second bath equipped with a thermometer to measure a temperature of the second bath and a densitometer to measure a concentration of the second bath; a third bath in which the iodine-dyed PVA film is stretched by a drawing roller; an oven equipped with a thermometer to measure a temperature of the oven; and a central controller that predicts a transmittance of the polarizing film, and then, controls the temperatures of the first and second baths and the oven and an amount of a composition fed to the second bath.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: July 1, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Ho Kyung Lee, Chang Song Lee, Kyu Hwang Lee, Eung Jin Jang, Joong Suk Nah
  • Publication number: 20140031289
    Abstract: The present invention relates to a thermosensitive phosphazene-based polymer having a degradation controllable ionic group, a use thereof, and a use thereof as a material for delivering bioactive substances. The phosphazene-based polymer according to the present invention has the thermosensitivity of showing the temperature-dependent sol-gel phase transition. Thus, it forms a gel phase at the body temperature when it is injected into the body to make it easy to control the release of bioactive substances such as drugs, and has the functional groups capable of making chemical bonds such as ionic bond, covalent bond, coordinate bond, etc. with drugs and thus is excellent in bearing the drugs. Since it can control the degradation rate depending on the kind of ionic group, it can selectively control the release time depending on the characteristics of drugs. Furthermore, it has an excellent biocompatibility and thus is very useful as a material for delivery of bioactive substances such as drugs, etc.
    Type: Application
    Filed: August 8, 2012
    Publication date: January 30, 2014
    Applicant: Korea Institute of Science and Technology
    Inventors: Soo-Chang SONG, Young-Min Kim
  • Patent number: 8586020
    Abstract: Provided are a use of chemically-crosslinkable, poly(organophosphazene)s for biomaterials, chemically-crosslinkable poly(organophosphazene)s with a physiologically active substance covalently-bonded thereto, a use thereof for biomaterials, and a process for preparing the same. The chemical crosslinkings can be made by UV irradiation, and/or a crosslinker, and/or an additive, and/or an enzyme, and/or a mixing of at least one polymer.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: November 19, 2013
    Assignee: Korea Institute of Science and Technology
    Inventors: Soo-Chang Song, Thrimoorthy Potta, Mi-Ran Park
  • Publication number: 20130170032
    Abstract: Disclosed herein is an apparatus for preparation of a film exhibiting polarizing properties (‘polarizing film’) by dyeing a substrate film with iodine and then orienting the same through a continuous process, and the foregoing apparatus includes, a first bath equipped with a thermometer to measure a temperature of the first bath (‘first bath thermometer’), in which a polyvinylalcohol (PVA) film as a substrate film is washed; a second bath equipped with a thermometer to measure a temperature of the second bath (‘second bath thermometer’) and a densitometer to measure a concentration of the second bath (‘second bath densitometer’), in which the washed PVA film is dipped in an iodine solution and dyed therein; a third bath in which the iodine-dyed PVA film is stretched by a drawing roller to thereby orient the dyed iodine; an oven equipped with a thermometer to measure a temperature of the oven (‘oven thermometer’) to dry the iodine-oriented PVA film; and a central controller that predicts a transmittance of the
    Type: Application
    Filed: June 2, 2011
    Publication date: July 4, 2013
    Applicant: LG Chem, Ltd.
    Inventors: Ho Kyung Lee, Chang Song Lee, Kyu Hwang Lee, Eung Jin Jang, Joong Suk Nah
  • Patent number: 8460836
    Abstract: A cathode for a fuel cell includes a gas diffusion layer contacting with a separator having a channel and a catalyst layer interposed between the gas diffusion layer and an electrolyte membrane. The catalyst layer of the cathode has two portions with different water-repelling properties, and a portion of the catalyst layer that does not face a channel has a higher water-repelling property than a portion that faces a channel. This cathode controls water-repelling property of the catalyst layer differently according to locations, so it is possible to keep an amount of moisture in an electrode in a suitable way and to restrain generation of flooding, thereby improving the performance of the cell.
    Type: Grant
    Filed: October 8, 2008
    Date of Patent: June 11, 2013
    Assignee: LG Chem, Ltd.
    Inventors: Hyuk Kim, Won-Ho Lee, Chang-Song Lee, Seong-Uk Jeong, Sang-Hyun Lee
  • Publication number: 20130016499
    Abstract: An optical device and an LED package using the same, and a backlight apparatus are provided, the optical device including a substrate, a first transparent thin film layer formed at one surface of the substrate, a quantum dot layer formed at an upper surface of the first transparent thin film layer and made of quantum dot particles, a protective layer formed on at least one of an upper surface or a bottom surface of the quantum dot layer and formed with metallic oxide nano particles, and a barrier member formed on the upper surface of the first transparent thin film layer for establishing an area formed with the quantum dot layer and the protective layer.
    Type: Application
    Filed: December 7, 2011
    Publication date: January 17, 2013
    Inventors: Young Joo Yee, Ki Chang Song
  • Publication number: 20130004455
    Abstract: Provided are a use of chemically-crosslinkable, poly(organophosphazene)s for biomaterials, chemically-crosslinkable poly(organophosphazene)s with a physiologically active substance covalently-bonded thereto, a use thereof for biomaterials, and a process for preparing the same. The chemical crosslinkings can be made by UV irradiation, and/or a crosslinker, and/or an additive, and/or an enzyme, and/or a mixing of at least one polymer.
    Type: Application
    Filed: June 30, 2011
    Publication date: January 3, 2013
    Applicant: Korea Institute of Science and Technology
    Inventors: Soo-Chang SONG, Thrimoorthy Potta, Mi-Ran Park
  • Patent number: 8313771
    Abstract: A phosphazene-based polymer hydrogel with a chemical cross-linkings formed by radiating ultraviolet (UV) and/or mixing with cross-linking agent and/or enzyme, and a method of preparing the same are provided. The hydrogel shows a sol-gel behavior and has an excellent solidity by containing the phosphazene-based polymer that is capable of cross-linking at a certain concentration.
    Type: Grant
    Filed: May 23, 2008
    Date of Patent: November 20, 2012
    Assignee: Korea Institute of Science and Technology
    Inventors: Soo-Chang Song, Thrimoorthy Potta, Sun-Mi Lee
  • Publication number: 20120261705
    Abstract: A light emitting device package capable of emitting uniform white light and a method for manufacturing the same are disclosed. The light emitting device package includes a package body, an electrode formed on at least one surface of the package body, a light emitting device mounted on the package body, and a phosphor layer enclosing the light emitting device while having a uniform thickness around the light emitting device.
    Type: Application
    Filed: June 22, 2012
    Publication date: October 18, 2012
    Inventors: Geun Ho Kim, Yu Ho Won, Chil Keun Park, Ki Chang Song
  • Patent number: 8287888
    Abstract: The present invention relates to a poly(organophosphazene)-bioactive molecule conjugates in which biodegradable and thermosensitive poly(organophosphazene) with a functional group showing the sol-gel phase transition with change of temperature is combined with various bioactive molecules, such as drugs, a preparation method thereof, and a use thereof for delivery of bioactive molecules.
    Type: Grant
    Filed: November 3, 2006
    Date of Patent: October 16, 2012
    Assignee: Korea Institute of Science and Technology
    Inventors: Soo-Chang Song, Sun-Mi Lee, Chang-Won Kim
  • Patent number: 8263996
    Abstract: A light emitting device comprises a light emitting element having a first electrode and a second electrode, and a semiconductor member having a cavity in a principal surface thereof, inside which the light emitting element is mounted, and electrically connected to the light emitting element, wherein the semiconductor member is constructed as a voltage regulating diode for stabilizing a voltage supplied from the exterior. As a result, the light emitting element can be protected from a static electricity or a surge voltage flowed therein from the exterior, the entire size of the system can be remarkably reduced so as to simplify a structure thereof, and heat generated from the system can be effectively discharged to the exterior. In addition, by providing a reflection portion in the cavity, light emitted from the light emitting element can be efficiently condensed.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: September 11, 2012
    Assignee: LG Electronics Inc.
    Inventors: Geun-Ho Kim, Ki-Chang Song
  • Publication number: 20120121517
    Abstract: The present invention relates to a poly(organophosphazene)-superparamagnetic nanoparticle complex including a biodegradable and thermosensitive poly(organophosphazene) and a iron oxide (Fe3O4, Magnetite)-series ferrite superparamagnetic nanoparticle, a preparation method, and uses of carrying a physiologically-active material, a bio-material and a biomaterial for cancer hyperthermia. The iron oxide is used as a MRI contrast agent for T-2 and T2* weighted image, and the poly(organophosphazene) shows a sol-to-gel behavior depending upon the temperature change. The complex is a bound-type where the superparamagnetic ferrite nanoparticle is bonded to phosphazene-based polymer via hydrophobic binding, and a mixed-type where the superparamagnetic ferrite nanoparticle is physically mixed with the phosphazene-based polymer.
    Type: Application
    Filed: June 30, 2011
    Publication date: May 17, 2012
    Inventors: Soo-Chang SONG, Jang Il KIM
  • Publication number: 20120081140
    Abstract: Provided is a probe card which has a space transformer which may be effectively changed to correspond to a change in wafer chip structure and is capable of maximizing acceptable channels of the space transformer.
    Type: Application
    Filed: April 22, 2010
    Publication date: April 5, 2012
    Inventors: Yun Hee Shim, Sung Hee Yoon, Seung Ho Yoo, Byung Chang Song, In Buhm Chung, Dong Il Kim
  • Patent number: 8075916
    Abstract: A biodegradable and thermosensitive poly(organophosphazene) with a functional group, a preparation method thereof, and a use thereof for delivery of bioactive substances are provided.
    Type: Grant
    Filed: May 17, 2008
    Date of Patent: December 13, 2011
    Assignee: Korea Institute of Science and Technology
    Inventors: Soo-Chang Song, Mi-Ran Park, Sun-Mi Lee
  • Publication number: 20110278637
    Abstract: A light emitting device comprises a light emitting element having a first electrode and a second electrode, and a semiconductor member having a cavity in a principal surface thereof, inside which the light emitting element is mounted, and electrically connected to the light emitting element, wherein the semiconductor member is constructed as a voltage regulating diode for stabilizing a voltage supplied from the exterior. As a result, the light emitting element can be protected from a static electricity or a surge voltage flowed therein from the exterior, the entire size of the system can be remarkably reduced so as to simplify a structure thereof, and heat generated from the system can be effectively discharged to the exterior. In addition, by providing a reflection portion in the cavity, light emitted from the light emitting element can be efficiently condensed.
    Type: Application
    Filed: July 25, 2011
    Publication date: November 17, 2011
    Inventors: Geun-Ho Kim, Ki-Chang SONG