Patents by Inventor Chang-Young Oh

Chang-Young 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).

  • Patent number: 11228968
    Abstract: Provided are an electronic apparatus and a method which is performable by the electronic apparatus to set a network of an audio device. Furthermore, provided are an electronic apparatus that may transmit, via a second communication method, access point connection information that corresponds to an access point that is connected via a first communication method to an audio device, and a method for setting a network of the audio device.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: January 18, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yong-woo Lee, Chang-heon Yoon, Jong-min Kim, Sang-hun Park, Sung-min So, Wha-seob Sim, Se-young Oh
  • Publication number: 20210398933
    Abstract: An electronic device which connects a circuit film to a display panel by applying a conductive material to the insides of holes formed in the circuit film, so as to improve reliability of bonding, and a display device using the same, are discussed.
    Type: Application
    Filed: May 28, 2021
    Publication date: December 23, 2021
    Applicant: LG Display Co., Ltd.
    Inventors: Chang Hyun SONG, Jae Young OH
  • Patent number: 10870621
    Abstract: The present invention relates to a process for preparing latanoprostene bunod and an intermediate therefor. In accordance with the preparation process of the present invention, latanoprostene bunod can be efficiently and cost-effectively prepared while reducing side reactions.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: December 22, 2020
    Assignee: YONSUNG FINE CHEMICAL CO., LTD.
    Inventors: Eun Jeong Ko, Hyun Ik Shin, Kee Young Lee, Chang Young Oh
  • Publication number: 20200165199
    Abstract: The present invention relates to a process for preparing latanoprostene bunod and an intermediate therefor. In accordance with the preparation process of the present invention, latanoprostene bunod can be efficiently and cost-effectively prepared while reducing side reactions.
    Type: Application
    Filed: August 3, 2018
    Publication date: May 28, 2020
    Applicant: YONSUNG FINE CHEMICAL CO., LTD.
    Inventors: Eun Jeong KO, Hyun Ik SHIN, Kee Young LEE, Chang Young OH
  • Publication number: 20200129468
    Abstract: An eye drop composition for treating glaucoma is disclosed. The eye drop composition includes a prostaglandin analogue, a thickening agent, and a solubilizing agent, wherein the thickening agent is carboxymethylcellulose or a salt thereof, and the solubilizing agent is tyloxapol.
    Type: Application
    Filed: June 21, 2018
    Publication date: April 30, 2020
    Applicant: YONSUNG FINE CHEMICAL CO., LTD.
    Inventors: Areum BAEK, Youngsik CHUNG, Hyun Ik SHIN, Chang Young OH, Kee Young LEE
  • Patent number: 9060386
    Abstract: Disclosed herein is a method of selecting a relay node in a mobile ad-hoc network. The relay node selection method includes updating a neighbor node list based on messages received from one or more other nodes, and selecting a 1-hop neighbor node having a highest Multi-Point Relay (MPR) selector counter (MSC) value, from among one or more 1-hop neighbor nodes included in the updated neighbor node list, as an MPR node. Therefore, the present invention can prevent unnecessary channel competition and conflicts between nodes and improve network performance.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: June 16, 2015
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Woo-Suk Cha, Jun-Keun Song, Seon-Tae Kim, Tae-Jin Lee, Jong-Ho Park, Chang-Young Oh
  • Publication number: 20130279398
    Abstract: Disclosed herein is a method of selecting a relay node in a mobile ad-hoc network. The relay node selection method includes updating a neighbor node list based on messages received from one or more other nodes, and selecting a 1-hop neighbor node having a highest Multi-Point Relay (MPR) selector counter (MSC) value, from among one or more 1-hop neighbor nodes included in the updated neighbor node list, as an MPR node. Therefore, the present invention can prevent unnecessary channel competition and conflicts between nodes and improve network performance.
    Type: Application
    Filed: December 6, 2012
    Publication date: October 24, 2013
    Applicant: Electronics And Telecommunications Research Institute
    Inventors: Woo-Suk CHA, Jun-Keun SONG, Seon-Tae KIM, Tae-Jin LEE, Jong-Ho PARK, Chang-Young OH
  • Patent number: 6989458
    Abstract: The present invention relates to a process for effectively preparing prostaglanin derivatives and to a stereospecific alkyl halide containing 15S-alcohol group as a starting material.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: January 24, 2006
    Assignee: Yonsung Fine Chemical Co.
    Inventors: Won-Hun Ham, Chang-Young Oh, Yong-Hyun Kim, Yiu-Suk Lee, Kee-Young Lee
  • Publication number: 20050192451
    Abstract: The present invention relates to a process for effectively preparing prostaglanin derivatives and to a stereospecific alkyl halide containing 15S-alcohol group as a starting material.
    Type: Application
    Filed: December 22, 2004
    Publication date: September 1, 2005
    Inventors: Won-Hun Ham, Chang-Young Oh, Yong-Hyun Kim, Yiu-Suk Lee, Kee-Young Lee
  • Patent number: 6914159
    Abstract: The present invention relates to a novel process for preparing sulfamoyl-substituted phenethylamine derivatives, specifically, 5-{2-[2-(2-alkoxy-phenoxy)ethylamino]-propyl}-2-methoxy-benzene sulfonamide of the formula (1).
    Type: Grant
    Filed: February 7, 2002
    Date of Patent: July 5, 2005
    Assignee: Yonsung Fine Chemical Co., Ltd.
    Inventors: Won Hun Ham, Chang Young Oh, Kee Young Lee, Yong Hyun Kim, Yiu Suk Lee
  • Patent number: 6852880
    Abstract: The present invention relates to a process for effectively preparing prostaglandin derivatives and to a stereospecific alkyl halide containing 15S-alcohol group as a starting material.
    Type: Grant
    Filed: May 7, 2002
    Date of Patent: February 8, 2005
    Assignee: Yonsung Fine Chemical Co.
    Inventors: Won-Hun Ham, Chang-Young Oh, Kee-Young Lee, Yong-Hyun Kim, Yiu-Suk Lee
  • Publication number: 20040116693
    Abstract: The present invention relates to a process for effectively preparing prostaglandin derivatives and to a stereospecific alkyl halide containing 15S-alcohol group as a starting material.
    Type: Application
    Filed: October 24, 2003
    Publication date: June 17, 2004
    Inventors: Won-Hun Ham, Chang-Young Oh, Kee-Young Lee, Yong-Hyun Kim, Yiu-Suk Lee
  • Patent number: 6127546
    Abstract: The present invention relates to a process for the preparation of an oxazoline compound which is easily chemically converted to a beta-amino-alpha-hydroxy acid or a gamma-amino-beta-hydroxy acid. The method comprises producing a compound of the following formula (4) using .alpha.-amino acid. The produced compound (4) is subjected to an intramolecular cyclization to produce an oxazoline compound of the following formula (3). The oxazoline compound (3) is oxidized at a vinyl group with RuCl.sub.3 or NaIO.sub.4 to produce an oxazoline compound of the following formula (1) which is easily chemically converted to a beta-amino-alpha-hydroxy acid. Alternatively, the oxazoline compound (3) may also be treated with 9-borabiclo[3.3.1]nonane such that a hydroxy group is introduced into the end of the vinyl group of the oxazoline compound(3). The introduced end hydroxy group is oxidized with RuCl.sub.3 or NaIO.sub.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: October 3, 2000
    Assignee: Dong Kook Pharmaceutical Co., Ltd.
    Inventors: Jin Kyu Park, Kyung Seok Choi, Han Won Lee, Sung Ki Seo, Won Hun Ham, Chang Young Oh, Kee Young Lee, Yong Hyun Kim, Min Sung Park
  • Patent number: 5792885
    Abstract: A preparation of 3-amino-1-hydroxypropane-1,1-diphosphonic acid includes the steps of: mixing N-alkoxycarbonyl-.beta.-alanine, phosphorous chloride and phosphorous acid in the ratio of 1:1:1.about.1:3:3 in a reaction solvent, xylene at 70.degree.-140.degree. C.; hydrolyzing; and obtaining 3-amino-1-hydroxypropane-1,1-diphosphonic acid as a product, thus decreasing the production of unidentified by-products and giving and low production cost by using xylene instead of chlorobenzene as a reaction solvent.
    Type: Grant
    Filed: August 13, 1997
    Date of Patent: August 11, 1998
    Assignee: Dong Kook Pharmaceutical Co., Ltd.
    Inventors: Won Hun Ham, Young Hun Jung, Chang Young Oh, Kee Young Lee, Yong Hyun Kim