Patents by Inventor Jin-Young Kwak

Jin-Young Kwak 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: 10288569
    Abstract: A method for preparing a hydrogel that reversibly changes color depending on pH includes: (S10) dissolving a carboxyl group-containing polysaccharide in buffer to obtain a polysaccharide solution; (S20) adding a cross-linker solution composed of a mixture of an organic solvent and a cross-linker to the polysaccharide solution; (S30) adding, to the cross-linker-containing polysaccharide solution resulting from step (S20), an organic solution composed of a mixture of an organic solvent and a first organic compound containing an aromatic functional group having at least one hydroxyl group bonded thereto, to form a mixture solution, and allowing the mixture solution to react; (S40) obtaining a polymer complex from the reaction mixture resulting from step (S30); and (S50) mixing the polymer complex from step (S40) with an organic dye comprising a second organic compound containing an aromatic functional group having at least one hydroxyl group bonded thereto.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: May 14, 2019
    Assignee: INDUSTRY-ACADEMIC CORPORATION FOUNDATION YONSEI UNIVERSITY
    Inventors: Sang Yup Lee, Chaemyeong Lee, Min Chul Kim, Jin Young Kwak, Sang Woo Park, Young Jun Lim
  • Patent number: 10067104
    Abstract: The present invention relates to a hydrogel bead for detecting hydrofluoric acid and a kit comprising the same, and more particularly, to a hydrogel bead capable of detecting hydrofluoric acid using an organometallic ligand compound that reversibly changes color depending on the concentration of hydrofluoric acid when coming into contact with hydrofluoric acid, and to a kit for detecting hydrofluoric acid comprising the same. In an embodiment, a method for preparing a hydrogel bead for detecting hydrofluoric acid comprises the steps of: mixing an organic compound, which contains an aromatic functional group having at least one hydroxyl group bonded thereto, with a solution of a metal-ligand compound that bonds with the organic compound, thereby preparing a mixed solution; dropping the mixed solution onto a gelling agent; and adding coagulating agent to the mixture resulting from the dropping step to form a porous bead.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: September 4, 2018
    Assignee: INDUSTRY-ACADEMIC COOPERATION FOUNDATION YONSEI UNIVERSITY
    Inventors: Sang Yup Lee, Chaemyeong Lee, Min Chul Kim, Jin Young Kwak, Sang Woo Park, Young Jun Lim, Chang Joon Keum
  • Publication number: 20170146459
    Abstract: A method for preparing a hydrogel that reversibly changes color depending on pH includes: (S10) dissolving a carboxyl group-containing polysaccharide in buffer to obtain a polysaccharide solution; (S20) adding a cross-linker solution composed of a mixture of an organic solvent and a cross-linker to the polysaccharide solution; (S30) adding, to the cross-linker-containing polysaccharide solution resulting from step (S20), an organic solution composed of a mixture of an organic solvent and a first organic compound containing an aromatic functional group having at least one hydroxyl group bonded thereto, to form a mixture solution, and allowing the mixture solution to react; (S40) obtaining a polymer complex from the reaction mixture resulting from step (S30); and (S50) mixing the polymer complex from step (S40) with an organic dye comprising a second organic compound containing an aromatic functional group having at least one hydroxyl group bonded thereto.
    Type: Application
    Filed: February 8, 2017
    Publication date: May 25, 2017
    Inventors: Sang Yup LEE, Chaemyeong LEE, Min Chul KIM, Jin Young KWAK, Sang Woo PARK, Young Jun LIM
  • Publication number: 20160146739
    Abstract: The present invention relates to a hydrogel bead for detecting hydrofluoric acid and a kit comprising the same, and more particularly, to a hydrogel bead capable of detecting hydrofluoric acid using an organometallic ligand compound that reversibly changes color depending on the concentration of hydrofluoric acid when coming into contact with hydrofluoric acid, and to a kit for detecting hydrofluoric acid comprising the same. In an embodiment, a method for preparing a hydrogel bead for detecting hydrofluoric acid comprises the steps of: mixing an organic compound, which contains an aromatic functional group having at least one hydroxyl group bonded thereto, with a solution of a metal-ligand compound that bonds with the organic compound, thereby preparing a mixed solution; dropping the mixed solution onto a gelling agent; and adding coagulating agent to the mixture resulting from the dropping step to form a porous bead.
    Type: Application
    Filed: April 22, 2015
    Publication date: May 26, 2016
    Inventors: Sang Yup LEE, Chaemyeong LEE, Min Chul KIM, Jin Young KWAK, Sang Woo PARK, Young Jun LIM, Chang Joon KEUM
  • Patent number: 9338930
    Abstract: A shield reinforcing apparatus is provided. The shield reinforcing apparatus includes a printed circuit board, a shield member that covers the printed circuit board, and at least one shield reinforcing part provided in the printed circuit board and configured to contact the shield member to be pressed.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: May 10, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Won-Jea Jang, Dong-In Ha, Jin-Young Kwak, Gi-Heung Kim, Jung-Yoon Seo, Jae-Joon Yoo, Byoung-Hee Lee, Sung-Jin Choi
  • Publication number: 20150362437
    Abstract: The present invention relates to a hydrogel, a preparation method thereof, and a pH sensor comprising the same, and more particularly, to a hydrogel, which can substitute for conventional pH paper, is continuously usable, can be used in various applications, and reversibly changes color depending on the pH of a sample, and to a pH sensor comprising the same. The hydrogel comprises: a polymer complex wherein a first organic compound containing an aromatic functional group having at least one hydroxyl group bonded thereto is joined to a carboxyl group-containing polysaccharide by a peptide bond; and an organic dye comprising a second organic compound containing an aromatic functional group having at least one hydroxyl group bonded thereto.
    Type: Application
    Filed: April 17, 2015
    Publication date: December 17, 2015
    Inventors: Sang Yup LEE, Chaemyeong LEE, Min Chul KIM, Jin Young KWAK, Sang Woo PARK, Young Jun LIM
  • Publication number: 20140318851
    Abstract: A shield reinforcing apparatus is provided. The shield reinforcing apparatus includes a printed circuit board, a shield member that covers the printed circuit board, and at least one shield reinforcing part provided in the printed circuit board and configured to contact the shield member to be pressed.
    Type: Application
    Filed: April 24, 2014
    Publication date: October 30, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Won-Jea JANG, Dong-In HA, Jin-Young KWAK, Gi-Heung KIM, Jung-Yoon SEO, Jae-Joon YOO, Byoung-Hee LEE, Sung-Jin CHOI
  • Patent number: 8783206
    Abstract: Disclosed is a wet label that includes a submergence check layer capable of being discolored according to an environmental change (e.g., water, moisture, dampness, etc.). The disclosed wet label includes an adhesive layer; a coating layer provided under the adhesive layer; and a submergence check layer provided under the coating layer, which is discolored according to an internal environmental change, wherein the coating layer blocks environment changes from contacting the submergence check layer. Furthermore, a discolored part of the submergence check layer may be visually checked.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: July 22, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jin-Young Kwak
  • Publication number: 20140019837
    Abstract: An online document distribution method for a mobile device may include receiving a selection of one online document among a plurality of online documents from a first user, generating a link address of the selected online document using unique information of the first user through an application installed in a mobile device of the first user, transmitting the generated link address to at least one second user device selected by the first user, detecting an access to the selected online document through the generated link address, and updating a score of the first user in response to the detected access to the selected online document.
    Type: Application
    Filed: September 28, 2012
    Publication date: January 16, 2014
    Applicant: EPVOL CO., LTD.
    Inventors: Dong Yoon SHIN, Jin Young KWAK
  • Publication number: 20120137959
    Abstract: Disclosed is a wet label that includes a submergence check layer capable of being discolored according to an environmental change (e.g., water, moisture, dampness, etc.). The disclosed wet label includes an adhesive layer; a coating layer provided under the adhesive layer; and a submergence check layer provided under the coating layer, which is discolored according to an internal environmental change, wherein the coating layer blocks environment changes from contacting the submergence check layer. Furthermore, a discolored part of the submergence check layer may be visually checked.
    Type: Application
    Filed: September 23, 2011
    Publication date: June 7, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Jin-Young KWAK
  • Publication number: 20120047236
    Abstract: A file transfer method is provided.
    Type: Application
    Filed: August 23, 2011
    Publication date: February 23, 2012
    Applicant: EPVOL CO., LTD.
    Inventors: Dong-Yoon SHIN, Jin-Young KWAK
  • Publication number: 20070018000
    Abstract: A portable, foldable cradle for portable terminals is provided. The foldable cradle includes a cradle body, a cradle support folded or unfolded with respect to the cradle body, a hinge unit provided to the cradle body and rotatably coupling the cradle support, and a means that is provided to the cradle body, brought into direct contact with a predetermined part of the portable terminal to prevent the contacted portable terminal from sliding in a ground direction, and adjusts a cradled state of the portable terminal.
    Type: Application
    Filed: April 14, 2006
    Publication date: January 25, 2007
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Young-Mok Jeun, Jin-Young Kwak