Patents by Inventor Do Yun Kim

Do Yun Kim 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: 20070099055
    Abstract: A polymer electrolyte membrane including an ionic conducting polymer and a light-irradiated product of a photoacid generator (PAG), a method of manufacturing the same, and a fuel cell using the same. The polymer electrolyte membrane has excellent proton conductivity and homogeneity by radiating light such as UV light onto the PAG, thereby producing an acid radical which generates an acid. The polymer electrolyte membrane also suppresses methanol crossover well. The polymer electrolyte membrane can be used as an electrolyte membrane of a fuel cell, for example, a direct methanol fuel cell.
    Type: Application
    Filed: October 10, 2006
    Publication date: May 3, 2007
    Inventors: Jin-gyu Lee, Myung-sup Jung, Do-yun Kim, Young-gyoon Ryu, Jae-jun Lee
  • Publication number: 20070092778
    Abstract: An oligomer solid acid and a polymer electrolyte membrane using the same. The polymer electrolyte membrane includes a macromolecule of oligomer solid acid having an ionically conductive terminal group at its terminal end and the minimum amount of ionically conductive terminal groups required for ion conduction, thus suppressing swelling and allowing a uniform distribution of the oligomer solid acid, thereby improving ionic conductivity. Since the number of ionically conductive terminal groups in the polymer electrolyte membrane is minimized and the polymer matrix in which swelling is suppressed is used, methanol crossover and difficulties of outflow due to a large volume are minimized, and a macromolecule of the oligomer solid acid having the ionically conductive terminal groups on the surface thereof is uniformly distributed. Accordingly, ionic conductivity is high and thus, the polymer electrolyte membrane shows good ionic conductivity even in low humidity conditions.
    Type: Application
    Filed: October 10, 2006
    Publication date: April 26, 2007
    Inventors: Myung-sup Jung, Do-yun Kim, Jin-gyu Lee, Jae-jun Lee
  • Publication number: 20070082248
    Abstract: A solid acid having a core of calixarene or calix resorcinarene. The solid acid is an ion conducting compound in which at least one of the hydroxyl groups is substituted by an organic group having a cation exchange group at a terminal end, a polymer electrolyte membrane including the same, and a fuel cell using the polymer electrolyte membrane. The polymer electrolyte membrane can provide low methanol crossover and high ionic conductivity. Accordingly, a fuel cell having high efficiency can be obtained by using the polymer electrolyte membrane.
    Type: Application
    Filed: October 12, 2006
    Publication date: April 12, 2007
    Inventors: Jae-jun Lee, Myung-sup Jung, Do-yun Kim, Jin-gyu Lee, Sang-kook Mah
  • Patent number: 7108788
    Abstract: Disclosed is an on-site treatment method of food waste generated from multi-unit dwellings and institutional food service facilities, by transporting wastewater-containing food waste to a separation chamber by use of domestic wastewater or an additional transporter; separating the transported food waste to wastewater and food waste; and treating the separated wastewater in a sewage disposal plant, and the separated food waste using disposal equipment. Such food waste can be treated even using disposal equipment of small capacities, due to separation of wastewater and food waste, compared to disposal equipment of large capacities required for treating wastewater and food waste together. Also, the quality of the separated wastewater is better than the conventional quality of wastewater, and thus loads of the sewage disposal plant can be efficiently decreased.
    Type: Grant
    Filed: August 29, 2002
    Date of Patent: September 19, 2006
    Assignees: E1 Biotech Co., Ltd., Korean Advanced Institute of Science and Technology
    Inventors: Ho Nam Chang, Do-Yun Kim, Moon-II Kim, Chul-Hee Ryu, Woo-Gi Lee
  • Publication number: 20060204856
    Abstract: An organic electrolytic solution and a lithium battery employing the same are provided. The organic electrolytic solution includes a lithium salt, an organic solvent containing a first solvent having a high dielectric constant and a second solvent having a low boiling point, and a surfactant including a hydrophobic portion having an aromatic group. The organic electrolytic solution effectively prevents the electrolytic solution from contacting the anode, thereby suppressing side reactions on the anode surface and improving discharge capacity, charge/discharge efficiency, lifespan, and battery reliability.
    Type: Application
    Filed: February 17, 2006
    Publication date: September 14, 2006
    Inventors: Young-gyoon Ryu, Jae-young Choi, Eun-sung Lee, Seok-soo Lee, Do-yun Kim, Sang-hoon Song
  • Patent number: 7041238
    Abstract: PTC conductive polymer composition includes organic polymer containing polyolefin components essentially consisting of 30˜40 w % high density polyethylene (HDPE), 20˜40 w % low density polyethylene (LDPE) and 10˜30 w % ethylene-acrylic-acid (EAA) or ethylene-vinyl-acetate (EVA), and 20˜30 w % high or low density polyethylene which is denaturated into maleic anhydride compound; 60˜120 w % electrical conductive particles dispersed into the organic polymer, the electrical conductive particles by weight of the organic polymer; and 0.2˜0.5 w % peroxidic cross-linking agent added for cross-linking reaction by weight of the organic polymer. Thus, it becomes possible to control PTC characteristics such as switching temperature and trip time of an electrical device by suitably adjusting an added amount of the polyethylene, which is denaturated into maleic anhydride compound.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: May 9, 2006
    Assignee: LG Cable Ltd.
    Inventors: Do-Yun Kim, Jong-Ho Lee, Soo-An Choi, Joon-Koo Han, Chang-Mo Ko
  • Publication number: 20050181257
    Abstract: The present invention is related to a polyimide, which has high ionic conductivity and good structural stability, does not decompose even under low humidity, and is inexpensive, and a polymer electrolyte and a fuel cell using the same.
    Type: Application
    Filed: February 8, 2005
    Publication date: August 18, 2005
    Inventors: Myung-sup Jung, Do-yun Kim, Min-ju Jeong
  • Publication number: 20050112440
    Abstract: The present invention is related to a polymer comprising terminal sulfonic acid groups, which has a high ionic conductivity and good structural stability, does not decompose even under low humidity conditions, and is inexpensive to produce. Furthermore, the present invention is related to a polymer electrolyte and a fuel cell using the same. The polymer of the present invention has a substituent comprising a terminal sulfonic acid group comprising Formula (1) at a side chain: where n may be a number in the range of about 1 to about 5.
    Type: Application
    Filed: October 26, 2004
    Publication date: May 26, 2005
    Inventors: Do-yun Kim, Min-ju Jeong, Myung-sup Jung, Bong-seok Moon
  • Publication number: 20040232387
    Abstract: PTC conductive polymer composition includes organic polymer containing polyolefin components essentially consisting of 30˜40 w % high density polyethylene (HDPE), 20˜40 w % low density polyethylene (LDPE) and 10˜30 w % ethylene-acrylic-acid (EAA) or ethylene-vinyl-acetate (EVA), and 20˜30 w % high or low density polyethylene which is denaturated into maleic anhydride compound; 60˜120 w % electrical conductive particles dispersed into the organic polymer, the electrical conductive particles by weight of the organic polymer; and 0.2˜0.5 w % peroxidic cross-linking agent added for cross-linking reaction by weight of the organic polymer. Thus, it becomes possible to control PTC characteristics such as switching temperature and trip time of an electrical device by suitably adjusting an added amount of the polyethylene, which is denaturated into maleic anhydride compound.
    Type: Application
    Filed: February 25, 2004
    Publication date: November 25, 2004
    Inventors: Do-Yun Kim, Jong-Ho Lee, Soo-An Choi, Joon-Koo Han, Chang-Mo Ko
  • Publication number: 20040206698
    Abstract: Disclosed is an on-site treatment method of food waste generated from multi-unit dwellings and institutional food service facilities, by transporting wastewater-containing food waste to a separation chamber by use of domestic wastewater or an additional transporter; separating the transported food waste to wastewater and food waste; and treating the separated wastewater in a sewage disposal plant, and the separated food waste using disposal equipment. Such food waste can be treated even using disposal equipment of small capacities, due to separation of wastewater and food waste, compared to disposal equipment of large capacities required for treating wastewater and food waste together. Also, the quality of the separated wastewater is better than the conventional quality of wastewater, and thus loads of the sewage disposal plant can be efficiently decreased.
    Type: Application
    Filed: February 20, 2004
    Publication date: October 21, 2004
    Inventors: Ho Nam Chang, Do Yun Kim, Moon-Il Kim, Chul-Hee Ryu, Woo-Gi Lee
  • Patent number: 6660479
    Abstract: Disclosed is a process for preparing arrays of oligopeptide nucleic acid probes immobilized on a solid matrix by employing polymeric photoacid generator. Arrays of peptide nucleic acid probes of the invention are prepared by the steps of: (i) derivatizing the surface of a solid matrix with aminoalkyloxysilane in alcohol and attaching a linker with acid-labile protecting group on the solid matrix; (ii) coating the solid matrix with polymeric photoacid generator(PAG); (iii) exposing the solid matrix thus coated to light to generate acid for eliminating acid-labile protecting group; (iv) washing the solid matrix with alkaline solution or organic solvent and removing residual polymeric photoacid generator; and, (v) attaching a monomeric peptide nucleic acid with acid-labile protecting group to the solid matrix, and repeating the previous Steps of (ii) to (v).
    Type: Grant
    Filed: February 7, 2002
    Date of Patent: December 9, 2003
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Min-Hwan Kim, Do-Yun Kim, Bong-Seok Moon, Jae-Chan Park, Young-Hee Kim, Seung-Joo Seo
  • Publication number: 20020122874
    Abstract: Disclosed is a process for preparing arrays of oligopeptide nucleic acid probes immobilized on a solid matrix by employing polymeric photoacid generator. Arrays of peptide nucleic acid probes of the invention are prepared by the steps of: (i) derivatizing the surface of a solid matrix with aminoalkyloxysilane in alcohol and attaching a linker with acid-labile protecting group on the solid matrix; (ii) coating the solid matrix with polymeric photoacid generator(PAG); (iii) exposing the solid matrix thus coated to light to generate acid for eliminating acid-labile protecting group; (iv) washing the solid matrix with alkaline solution or organic solvent and removing residual polymeric photoacid generator; and, (v) attaching a monomeric peptide nucleic acid with acid-labile protecting group to the solid matrix, and repeating the previous Steps of (ii) to (v).
    Type: Application
    Filed: February 7, 2002
    Publication date: September 5, 2002
    Inventors: Min-Hwan Kim, Do-Yun Kim, Bong-Seok Moon, Jae-Chan Park, Young-Hee Kim, Seung-Joo Seo
  • Patent number: 6359125
    Abstract: The present invention relates to a process for preparing arrays of oligopeptide nucleic acid probes immobilized on a solid matrix by employing polymeric photoacid generator. Arrays of peptide nucleic acid probes of the invention are prepared by the steps of: (i) derivatizing the surface of a solid matrix with aminoalkyloxysilane in alcohol and attaching a linker with acid-labile protecting group on the solid matrix; (ii) coating the solid matrix with polymeric photoacid generator (PAG); (iii) exposing the solid matrix thus coated to light to generate acid for eliminating acid-labile protecting group; (iv) washing the solid matrix with alkaline solution or organic solvent and removing residual polymeric photoacid generator; and, (v) attaching a monomeric peptide nucleic acid with acid-labile protecting group to the solid matrix, and repeating the previous Steps of (ii) to (v).
    Type: Grant
    Filed: February 7, 2001
    Date of Patent: March 19, 2002
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Min-Hwan Kim, Do-Yun Kim, Bong-Seok Moon, Jae-Chan Park, Young-Hee Kim, Seung-Joo Seo
  • Patent number: 6174649
    Abstract: Cinnamate-containing photopolymers for use in liquid crystal display are provided. The photopolymers can be homopolymers or copolymers, and have improved thermostability and photoelectric characteristics. The photopolymers contain a substituted benzene ring and have a weight average molecular weight of from about 1000 to about 100,000. Methods for forming LCD cells using the cinnamate-containing homopolymers and copolymers are also provided.
    Type: Grant
    Filed: November 11, 1998
    Date of Patent: January 16, 2001
    Assignee: Samsung Display Devices Co., Ltd.
    Inventors: Jae Geun Park, Do Yun Kim, Hwan Jae Choi, Joo Young Kim
  • Patent number: 5998101
    Abstract: The present invention provides novel photopolymers for use in liquid crystal display. The photopolymers are cinnamate-containing photopolymers wherein a mesogen, preferably containing a benzene ring, is introduced between a polyvinyl main chain and a cinnamate group, and also wherein the cinnamate group can be substituted with a cyanide group, an alkyl group, a halogen atom or a fluorocarbonyl group. The cinnamate-containing photopolymers have improved stability and photoelectric properties, and improved pre-tilt angle. The photopolymers can be used to form an orientation film for an LCD in a non-rubbing process, and can be used alone or with a cross linking agent.
    Type: Grant
    Filed: October 16, 1997
    Date of Patent: December 7, 1999
    Assignee: Samsung Display Devices Co., Ltd.
    Inventors: Jae Geun Park, Do Yun Kim, Hwan Jae Choi, Joo Young Kim