Patents by Inventor Do-Yon Chang

Do-Yon Chang 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: 10276873
    Abstract: Provided are a current collector for a battery, including: a base material; adhesive layers positioned on the base material; and metal mesh layers positioned on the adhesive layers, in which the metal mesh layer includes a plurality of metal mesh patterns, and holes positioned between the metal mesh patterns, and a method of manufacturing the same. An active material is applied onto the metal mesh layer through the holes of the metal mesh layer, and thus a contact area of the metal mesh layer and the active material is increased, so that it is possible to restrict the active material from being deintercalated from the current collector and improve a cycle lifespan property of a battery.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: April 30, 2019
    Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Man Kim, Joo Yul Lee, Sang Yeoul Lee, Yong Soo Jeong, Do Yon Chang, Kyu Hwan Lee, Cheol Nam Yang, Chang Rae Lee, Seong Bong Yim, Dong Chan Lim, Jae Hong Lim, Young Sup Song, Sung Mo Moon, Su Sub Cha
  • Publication number: 20150125756
    Abstract: Provided are a current collector for a battery, including: a base material; adhesive layers positioned on the base material; and metal mesh layers positioned on the adhesive layers, in which the metal mesh layer includes a plurality of metal mesh patterns, and holes positioned between the metal mesh patterns, and a method of manufacturing the same. An active material is applied onto the metal mesh layer through the holes of the metal mesh layer, and thus a contact area of the metal mesh layer and the active material is increased, so that it is possible to restrict the active material from being deintercalated from the current collector and improve a cycle lifespan property of a battery.
    Type: Application
    Filed: April 22, 2013
    Publication date: May 7, 2015
    Applicant: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Man Kim, Joo Yul Lee, Sang Yeoul Lee, Yong Soo Jeong, Do Yon Chang, Kyu Hwan Lee, Cheol Nam Yang, Chang Rae Lee, Seong Bong Yim, Dong Chan Lim, Jae Hong Lim, Young Sup Song, Sung Mo Moon, Su Sub Cha
  • Patent number: 7381318
    Abstract: Disclosed herein are a biaxially textured pure metal or alloy layer deposited by electroplating process on the surface of a single-crystalline or quasi-single-crystalline metal substrate, and a method for manufacturing the biaxially textured pure metal or alloy layer.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: June 3, 2008
    Assignee: Korea Institute of Machinery and Materials
    Inventors: Jai-Moo Yoo, Young-Kuk Kim, Jae-Woong Ko, Kyu-Hwan Lee, Do-Yon Chang
  • Patent number: 6846367
    Abstract: Disclosed is a method for improving the wear- and corrosion-resistance of a chromium-plated steel substrate by heat-treating the chromium-plated steel substrate under optimum conditions to inhibit a drop in corrosion-resistance of a steel substrate due to fine cracks formed at a chromium layer, and to improve a hardness of the chromium layer. The heat-treating method comprises the steps of: plating the chromium layer onto the steel substrate; and heating the chromium-plated steel substrate in an oxidizing gas environment at above atmospheric pressure to form oxidized layers containing magnetite (Fe3O4) on the surface of the steel substrate, the surface of the steel substrate being partly exposed to the air through penetrating cracks formed in the chromium layer.
    Type: Grant
    Filed: February 11, 2003
    Date of Patent: January 25, 2005
    Assignee: Korea Institute of Machinery & Materials
    Inventors: Kee-Seok Nam, Sik-Cheol Kwon, Do-Yon Chang, Kyu-Hwan Lee, Man Kim, Dong-Soo Kim, Gun-Hwan Lee
  • Publication number: 20040195105
    Abstract: Disclosed herein are a biaxially textured pure metal or alloy layer deposited by electroplating process on the surface of a single-crystalline or quasi-single-crystalline metal substrate, and a method for manufacturing the biaxially textured pure metal or alloy layer. Specifically, the biaxially textured pure metal or alloy layer is deposited by electroplating process on the surface of a pure metal or alloy substrate having single-crystalline or quasi-single-crystalline orientation. The biaxially textured pure metal or alloy layer has a misorientation on the c-axis of 4° or less and a misorientation on the plane formed by the a-axis and b-axis of 5.2° or less in which the misorientation on the c-axis is determined by a Full Width at Half Maximum of peaks on the &thgr;-rocking curve and the misorientation on the plane formed by the a-axis and b-axis is determined by a Full Width at Half Maximum of peaks on the &PHgr;-scan.
    Type: Application
    Filed: June 27, 2003
    Publication date: October 7, 2004
    Applicant: Korea Institute of Machinery and Materials
    Inventors: Jai-Moo Yoo, Young-Kuk Kim, Jae-Woong Ko, Kyu-Hwan Lee, Do-Yon Chang
  • Publication number: 20040099344
    Abstract: Disclosed is a method for improving the wear- and corrosion-resistance of a chromium-plated steel substrate by heat-treating the chromium-plated steel substrate under optimum conditions to inhibit a drop in corrosion-resistance of a steel substrate due to fine cracks formed at a chromium layer, and to improve a hardness of the chromium layer. The heat-treating method comprises the steps of: plating the chromium layer onto the steel substrate; and heating the chromium-plated steel substrate in an oxidizing gas environment at above atmospheric pressure to form oxidized layers containing magnetite (Fe3O4) on the surface of the steel substrate, the surface of the steel substrate being partly exposed to the air through penetrating cracks formed in the chromium layer.
    Type: Application
    Filed: February 11, 2003
    Publication date: May 27, 2004
    Applicant: Korea Institute of Machinery and Materials
    Inventors: Kee-Seok Nam, Sik-Cheol Kwon, Do-Yon Chang, Kyu-Hwan Lee, Man Kim, Dong-Soo Kim, Gun-Hwan Lee