Patents by Inventor Jin Gyu Lee

Jin Gyu Lee 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: 20190149820
    Abstract: The present invention relates to an apparatus and method for encoding and decoding an image by skip encoding. The image-encoding method by skip encoding, which performs intra-prediction, comprises: performing a filtering operation on the signal which is reconstructed prior to an encoding object signal in an encoding object image; using the filtered reconstructed signal to generate a prediction signal for the encoding object signal; setting the generated prediction signal as a reconstruction signal for the encoding object signal; and not encoding the residual signal which can be generated on the basis of the difference between the encoding object signal and the prediction signal, thereby performing skip encoding on the encoding object signal.
    Type: Application
    Filed: January 10, 2019
    Publication date: May 16, 2019
    Applicants: Electronics and Telecommunications Research Institute, Kwangwoon University Industry-Academic Collaborati on Foundation, University-Industry Cooperation Group of Kyung Hee University
    Inventors: Sung Chang LIM, Ha Hyun LEE, Se Yoon JEONG, Hui Yong KIM, Suk Hee CHO, Jong Ho KIM, Jin Ho LEE, Jin Soo CHOI, Jin Woong KIM, Chie Teuk AHN, Dong Gyu SIM, Seoung Jun OH, Gwang Hoon PARK, Sea Nae PARK, Chan Woong JEON
  • Patent number: 8653297
    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: Grant
    Filed: September 21, 2011
    Date of Patent: February 18, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jae-jun Lee, Myung-sup Jung, Do-yun Kim, Jin-gyu Lee, Sang-kook Mah
  • Patent number: 8124294
    Abstract: Provided is a polymer electrolyte membrane including an inorganic nanoparticle bonded with a proton-conducting group, a solid acid and a proton-conducting polymer. The inorganic nanoparticle bonded with the proton-conducting group may be obtained by reacting a compound including a proton-conducting group with a metal precursor. The polymer electrolyte membrane has significantly enhanced proton conductivity and reduced methanol crossover.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: February 28, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jin-gyu Lee, Myung-sup Jung, Jae-jun Lee
  • Publication number: 20120045711
    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: September 21, 2011
    Publication date: February 23, 2012
    Applicant: SAMSUNG SDI CO., LTD
    Inventors: Jae-jun Lee, Myung-sup Jung, Do-yun Kim, Jin-gyu Lee, Sang-kook Mah
  • Patent number: 8119833
    Abstract: Provided are a dendrimer solid acid and a polymer electrolyte membrane using the same. The polymer electrolyte membrane includes a macromolecule of a dendrimer solid acid having ionically conductive terminal groups at the surface thereof and a minimum amount of ionically conductive terminal groups required for ionic conduction, thus suppressing swelling and allowing a uniform distribution of the dendrimer 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 may be reduced, and a macromolecule of the dendrimer 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 non-humidified conditions.
    Type: Grant
    Filed: July 5, 2011
    Date of Patent: February 21, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Myung-sup Jung, Jin-gyu Lee, Sang-kook Mah, Jae-jun Lee
  • Patent number: 8057952
    Abstract: A polymer electrolyte membrane, a method of manufacturing the same, and a fuel cell including the polymer electrolyte membrane are provided, wherein the polymer electrolyte forms an interpenetrating polymer network (IPN) of a polymer by simple blending of a hydrophobic polyimide having a reactive terminal group and a hydrophilic aromatic polymer having ion conductivity. The polymer electrolyte membrane has reduced swelling properties due to highly dense crosslinking of polyimide through the reactive terminal group, shows high ion conductivity at low humidity, and has methanol crossover suppressing ability. Accordingly, a fuel cell with improved electric and mechanical properties can be provided.
    Type: Grant
    Filed: January 8, 2007
    Date of Patent: November 15, 2011
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Myung-sup Jung, Sang-kook Mah, Do-yun Kim, Jin-gyu Lee
  • Patent number: 8049033
    Abstract: Provided are a dendrimer solid acid and a polymer electrolyte membrane using the same. The polymer electrolyte membrane includes a macromolecule of a dendrimer solid acid having ionically conductive terminal groups at the surface thereof and a minimum amount of ionically conductive terminal groups required for ionic conduction, thus suppressing swelling and allowing a uniform distribution of the dendrimer 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 may be reduced, and a macromolecule of the dendrimer 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 non-humidified conditions.
    Type: Grant
    Filed: October 10, 2006
    Date of Patent: November 1, 2011
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Myung-sup Jung, Jin-gyu Lee, Sang-kook Mah, Jae-jun Lee
  • Patent number: 8049032
    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: Grant
    Filed: October 12, 2006
    Date of Patent: November 1, 2011
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jae-jun Lee, Myung-sup Jung, Do-yun Kim, Jin-gyu Lee, Sang-kook Mah
  • Publication number: 20110262833
    Abstract: Provided are a dendrimer solid acid and a polymer electrolyte membrane using the same. The polymer electrolyte membrane includes a macromolecule of a dendrimer solid acid having ionically conductive terminal groups at the surface thereof and a minimum amount of ionically conductive terminal groups required for ionic conduction, thus suppressing swelling and allowing a uniform distribution of the dendrimer 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 may be reduced, and a macromolecule of the dendrimer 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 non-humidified conditions.
    Type: Application
    Filed: July 5, 2011
    Publication date: October 27, 2011
    Inventors: Myung-sup Jung, Jin-gyu Lee, Sang-kook Mah, Jae-jun Lee
  • Patent number: 7923167
    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: Grant
    Filed: October 10, 2006
    Date of Patent: April 12, 2011
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jin-gyu Lee, Myung-sup Jung, Do-yun Kim, Young-gyoon Ryu, Jae-jun Lee
  • Patent number: 7915353
    Abstract: Provided is a silica nanocomposite including silica and a siloxane-based polymer covalently bonded to the silica.
    Type: Grant
    Filed: February 4, 2008
    Date of Patent: March 29, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin Gyu Lee, Myung Dong Cho, Sang Hoon Joo
  • Patent number: 7893117
    Abstract: An ion-conducting, sulfonated and crosslinked copolymer for use in a fuel cell is disclosed. The ion-conducting, sulfonated and crosslinked copolymer is made up of four monomers. The first monomer is an aromatic diol. The second monomer includes two groups, each group capable of reacting with the hydroxy groups of the first monomer, and each group independently selected from a nitro group and a halogen group. The third monomer is one of the first monomer or the second monomer, except that one of the hydrogen atoms attached to a benzene ring is substituted with —SO3Y, where Y is selected from hydrogen (H), lithium (Li), sodium (Na), potassium (K) and trialkyl ammonium of the form HNR3 where R is an alkyl group having from 1 to 5 carbon atoms. The fourth monomer includes at least three groups, each independently selected from a hydroxy group, a nitro group, and a halogen group.
    Type: Grant
    Filed: October 11, 2006
    Date of Patent: February 22, 2011
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jae-jun Lee, Jin-gyu Lee, Sang-kook Mah, Myung-sup Jung
  • Patent number: 7893119
    Abstract: A polymer electrolyte membrane including a polysilsesquioxane group-containing copolymer and an ionic conductive polymer is provided. A method of preparing the polymer electrolyte membrane and a fuel cell including the polymer electrolyte membrane is also provided. The polymer electrolyte membrane has improved ion conductivity and an improved ability to suppress methanol crossover, and therefore can be used as an electrolyte membrane for a fuel cell, including a direct methanol fuel cell.
    Type: Grant
    Filed: November 27, 2006
    Date of Patent: February 22, 2011
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jin-gyu Lee, Sang-kook Mah, Myung-sup Jung, Jae-jun Lee, Do-yun Kim
  • Patent number: 7842410
    Abstract: A solid acid including a carbon nanotube (CNT), a spacer group combined with the CNT and an ionically conductive functional group connected to the spacer group. A polymer electrolyte membrane may include the same composition, and may be used in a fuel cell. The polymer electrolyte membrane using the solid acid has excellent ionic conductivity and suppresses the cross-over of methanol. The polymer electrolyte membrane is used as an electrolyte membrane of a fuel cell, for example, a direct methanol fuel cell.
    Type: Grant
    Filed: October 4, 2006
    Date of Patent: November 30, 2010
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jin-gyu Lee, Sang-kook Mah, Myung-sup Jung, Young-gyoon Ryu, Jae-jun Lee, Do-yun Kim
  • Patent number: 7833665
    Abstract: A polysiloxane compound and a fuel cell including the same where the polysiloxane compound is an organic polymer siloxane compound containing sulfonic acid groups. By using the organic polymer siloxane compound containing sulfonic acid groups, a polymer electrolyte membrane having superior characteristics such as dimensional stability and ionic conductivity, without affecting the amount of methanol crossover, can be obtained by reducing swelling due to liquids.
    Type: Grant
    Filed: September 14, 2006
    Date of Patent: November 16, 2010
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Sang-kook Mah, Do-yun Kim, Jin-gyu Lee, Myung-sup Jung, Jao-jun Lee
  • Publication number: 20090042999
    Abstract: Example embodiments provide a composition for a polyurethane foam including a silane precursor and/or polysilsesquioxane resin, and a preparation method of the polyurethane foam. A polyurethane foam having improved mechanical properties and insulation characteristic can be obtained by including the silane precursor and/or a polysilsesquioxane in the formation of the polyurethane foam.
    Type: Application
    Filed: March 18, 2008
    Publication date: February 12, 2009
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Gyu LEE, Myung Sup JUNG
  • Publication number: 20080188581
    Abstract: Provided is a silica nanocomposite including silica and a siloxane-based polymer covalently bonded to the silica.
    Type: Application
    Filed: February 4, 2008
    Publication date: August 7, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Gyu Lee, Myung Dong Cho, Sang Hoon Joo
  • Publication number: 20080085441
    Abstract: Provided is a polymer electrolyte membrane including an inorganic nanoparticle bonded with a proton-conducting group, a solid acid and a proton-conducting polymer. The inorganic nanoparticle bonded with the proton-conducting group may be obtained by reacting a compound including a proton-conducting group with a metal precursor. The polymer electrolyte membrane has significantly enhanced proton conductivity and reduced methanol crossover.
    Type: Application
    Filed: March 30, 2007
    Publication date: April 10, 2008
    Inventors: Jin-gyu Lee, Myung-sup Jung, Jae-jun Lee
  • Patent number: 7326396
    Abstract: The present invention relates to a method for preparing nanoporous carbons with enhanced mechanical strength and the nanoporous carbons prepared by the method, and more specifically, to a method for preparing a nanoporous carbon, comprising the steps of (i) synthesizing a mesoporous silica template not being subjected to any calcination process; (ii) incorporating a mixture of a monomer for addition polymerization and initiator, or a mixture of a monomer for condensation polymerization and acid catalyst into the as-synthesized mesoporous silica template, and reacting the mixture to obtain a polymer-silica composite; and (iii) carbonizing the polymer-silica composite at a high temperature to obtain a carbon-silica composite, from which the silica template is then removed using a solvent.
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: February 5, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong Sung Yu, Jin Gyu Lee, Seok Chang
  • Publication number: 20070202375
    Abstract: A polymer electrolyte membrane, a method of manufacturing the same, and a fuel cell including the polymer electrolyte membrane are provided, wherein the polymer electrolyte forms an interpenetrating polymer network (IPN) of a polymer by simple blending of a hydrophobic polyimide having a reactive terminal group and a hydrophilic aromatic polymer having ion conductivity. The polymer electrolyte membrane has reduced swelling properties due to highly dense crosslinking of polyimide through the reactive terminal group, shows high ion conductivity at low humidity, and has methanol crossover suppressing ability. Accordingly, a fuel cell with improved electric and mechanical properties can be provided.
    Type: Application
    Filed: January 8, 2007
    Publication date: August 30, 2007
    Inventors: Myung-sup Jung, Sang-kook Mah, Do-yun Kim, Jin-gyu Lee