Patents by Inventor Dong Hyun Oh

Dong Hyun Oh 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: 20100060834
    Abstract: The present invention relates to a novel polyimide copolymer, a method of preparing the polyimide copolymer, a liquid crystal aligning layer including the polyimide copolymer, a method of producing the liquid crystal aligning layer, and a liquid crystal display including the liquid crystal aligning layer. The liquid crystal aligning layer that includes the polyimide copolymer according to the present invention is advantageous in that when ultraviolet rays are radiated on movable chains of the polyamic acid copolymer to perform alignment before a polyimide copolymer is imidized and heat treatment is then performed to conduct imidization, thermal stability is excellent, residual images are not formed, and alignment of liquid crystals is excellent.
    Type: Application
    Filed: January 7, 2008
    Publication date: March 11, 2010
    Inventors: Xing-Zhong Fang, Kyung-Jun Kim, Byung-Hyun Lee, Jung-Ho Jo, Dong-Hyun Oh, Wan-Hee Goh, Sang-Kook Kim, Hye-Ran Seong, Hye-Won Jeong, Yun-Jeong Lee
  • Patent number: 7625611
    Abstract: The present invention to a composition for liquid crystal aligning comprising an oligoimide or oligoamic acid, which comprises a thermocurable or photocurable functional group on at least one end of the oligoimide or oligoamic acid backbone, a liquid crystal aligning layer prepared from the same, and a liquid crystal display comprising the same. The composition for liquid crystal aligning according to the present can minimize the generation of the decomposed by-products, which had been generated upon the use of polyimides, by using an oligoimide or oligoamic acid on at least one end of the backbone, instead of the conventional polyimides and has an excellent effect of improvement in alignment property, thermal stability, and image sticking.
    Type: Grant
    Filed: January 4, 2007
    Date of Patent: December 1, 2009
    Assignee: LG Chem. Ltd.
    Inventors: Kyung-Jun Kim, Yun-Jeong Lee, Sang-Kook Kim, Hye-Ran Seong, Dong-Hyun Oh, Jung-Ho Jo
  • Patent number: 7520982
    Abstract: Provided is a cucurbituril-containing polymer. The cucurbituril-containing polymer may be used in removal, separation, or purification of air pollutants, water contaminants, biological substances, organic or inorganic substances, alkaline metals, heavy metals, ionic or water-soluble biological substances. The cucurbituril-containing polymer may be a stationary phase that may be used for column chromatography.
    Type: Grant
    Filed: July 24, 2004
    Date of Patent: April 21, 2009
    Assignee: Postech Foundation
    Inventors: Kimoon Kim, Dong Hyun Oh, Erumaipatty Rajagounder Nagarajan, Young Ho Ko, Shashadhar Samal
  • Patent number: 7504029
    Abstract: A cucurbituril-bonded silica gel and its use are provided. The cucurbituril-bonded silica gel is useful for removal of air pollutants or water contaminants, and separation and purification of biological, organic, inorganic, or ionic substances.
    Type: Grant
    Filed: February 11, 2004
    Date of Patent: March 17, 2009
    Assignee: Postech Foundation
    Inventors: Kimoon Kim, Rengarajan Balaji, Dong Hyun Oh, Young Ho Ko, Sang Yong Jon
  • Publication number: 20080279950
    Abstract: Provided are nanoparticles prepared by the aggregation of cucurbituril derivatives and having a particle size of 1 to 1,000 nm, a pharmaceutical composition in which a pharmaceutically active substance is loaded into the nanoparticles, and preparation methods thereof.
    Type: Application
    Filed: July 18, 2008
    Publication date: November 13, 2008
    Applicant: POSTECH FOUNDATION
    Inventors: Kimoon KIM, Sang Yong JON, Young Jin JEON, Dong Hyun OH, Narayanan SELVAPALAM
  • Publication number: 20080260676
    Abstract: Provided are hydroxycucurbituril derivatives, their preparation methods and uses. The hydroxycucurbituril derivative is easy to further functionalize with enhanced solubility in common solvents, thereby providing wider applications.
    Type: Application
    Filed: June 13, 2008
    Publication date: October 23, 2008
    Applicant: POSTECH FOUNDATION
    Inventors: Kimoon KIM, Sang Yong JON, Narayanan SELVAPALAM, Dong Hyun OH
  • Patent number: 7388099
    Abstract: Provided are hydroxycucurbituril derivatives, their preparation methods and uses. The hydroxycucurbituril derivative is easy to further functionalize with enhanced solubility in common solvents, thereby providing wider applications.
    Type: Grant
    Filed: November 26, 2002
    Date of Patent: June 17, 2008
    Assignee: POSTECH Foundation
    Inventors: Ki-Moon Kim, Sang Yong Jon, Narayanan Selvapalam, Dong Hyun Oh
  • Publication number: 20080139821
    Abstract: Provided are a disubstituted cucurbituril that can be easily substituted by a substituent according to a desired usage and a method for preparing the same. The disubstituted cucurbituril has two end functional groups that can covalently bind with a solid substrate or a biochemically useful compound to obtain a cucurbituril-bonded substrate, which enables application of the disubstituted cucurbituril as column packing materials for chromatography, additives to gas separation membranes, catalysts for various chemical reactions, chemical sensors, or biological sensors.
    Type: Application
    Filed: March 13, 2004
    Publication date: June 12, 2008
    Applicant: POSTECH FOUNDATION
    Inventors: Kimoon Kim, Jae Wook Lee, Dong Hyun Oh, Jeongmin Ju
  • Publication number: 20070212404
    Abstract: Provided are a liposome formed by self-assembling a cucurbituril derivative and a method of preparing the liposome.
    Type: Application
    Filed: April 19, 2005
    Publication date: September 13, 2007
    Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATION
    Inventors: Kimoon Kim, Hyung Lee, Kyung Park, Young Jeon, Dong-Hyun Oh, Dongwoo Kim
  • Publication number: 20070154656
    Abstract: The present invention to a composition for liquid crystal aligning comprising an oligoimide or oligoamic acid, which comprises a thermocurable or photocurable functional group on at least one end of the oligoimide or oligoamic acid backbone, a liquid crystal aligning layer prepared from the same, and a liquid crystal display comprising the same. The composition for liquid crystal aligning according to the present can minimize the generation of the decomposed by-products, which had been generated upon the use of polyimides, by using an oligoimide or oligoamic acid on at least one end of the backbone, instead of the conventional polyimides and has an excellent effect of improvement in alignment property, thermal stability, and image sticking.
    Type: Application
    Filed: January 4, 2007
    Publication date: July 5, 2007
    Inventors: Kyung-Jun Kim, Yun-Jeong Lee, Sang-Kook Kim, Hye-Ran Seong, Dong-Hyun Oh, Jung-Ho Jo
  • Publication number: 20060251725
    Abstract: Provided are nanoparticles prepared by the aggregation of cucurbituril derivatives and having a particle size of 1 to 1,000 nm, a pharmaceutical composition in which a pharmaceutically active substance is loaded into the nanoparticles, and preparation methods thereof.
    Type: Application
    Filed: July 26, 2004
    Publication date: November 9, 2006
    Applicant: POSTECH FOUNDATION
    Inventors: Kimoon Kim, Sang Yong Jon, Young Jin Jeon, Dong Hyun Oh, Narayanan Selvapalam
  • Publication number: 20050075498
    Abstract: Provided are hydroxycucurbituril derivatives, their preparation methods and uses. The hydroxycucurbituril derivative is easy to further functionalize with enhanced solubility in common solvents, thereby providing wider applications.
    Type: Application
    Filed: November 26, 2002
    Publication date: April 7, 2005
    Applicant: Postech Foundation
    Inventors: Kimoon Kim, Sang Yong Jon, Narayanan Selvapalam, Dong Hyun Oh