Patents by Inventor Dae Sang Han

Dae Sang Han 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: 20190055342
    Abstract: The present invention relates to a thermoplastic polyurethane composition imparted with crosslinking sites, which comprise a thermoplastic polyurethane containing crosslinking sites incorporated into the molecule of a polyol and/or a chain extender. The thermoplastic polyurethane composition has an easy-to-process viscosity at a processing temperature of about 130° C. or below in a low-temperature foaming process that is performed using an existing EVA crosslinking/foaming system. Thus, the thermoplastic polyurethane composition may be easily mixed with a crosslinking agent, a foaming agent and various additives, and when it is press-molded or injection-molded to provide a crosslinked foam, foam cells are easily formed by the crosslinking sites incorporated into the molecule of the polyol and/or the chain extender.
    Type: Application
    Filed: July 27, 2016
    Publication date: February 21, 2019
    Inventors: Sang Chul NAM, Sang Yun LEE, Dae Sang HAN, Jin Ho SHIN, Gi Yong UM, Jong Woo BAE, Seong-Hye KIM
  • Patent number: 9832882
    Abstract: Provided herein is a conductive pattern making method and conductive pattern, the method including forming a groove such that its width in an inlet area is bigger than its width in an inner area; filling the groove with a conductive ink composition; and drying the conductive ink composition so that a solvent contained in the conductive ink composition inside the groove is volatilized to reduce the volume of the conductive ink composition.
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: November 28, 2017
    Assignee: INKTEC CO., LTD.
    Inventors: Kwang-Choon Chung, Ji Hoon Yoo, Joonki Seong, Dae Sang Han, Nam-Boo Cho
  • Patent number: 9831487
    Abstract: Provided herein is a method for forming a transparent electrode film, the method comprising forming an electrode pattern by printing an electrode pattern on a release film using a metal ink composition; forming an insulating layer by applying a curable resin on the release film on which the electrode pattern has been formed; forming a substrate layer by laminating a substrate on the insulating layer; removing the release film; and forming a conductive layer by applying a conductive material on the electrode pattern from which the release film has been removed.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: November 28, 2017
    Assignee: INKTEC CO., LTD.
    Inventors: Kwang-Choon Chung, In-Sook Yi, Ji Hoon Yoo, Joonki Seong, Dae Sang Han
  • Patent number: 9832881
    Abstract: Provided herein is a method for forming a transparent electrode film for display and the transparent electrode film for display, the method comprising forming an electrode pattern by printing a fine electrode pattern on a release film using a conductive ink composition; forming an insulating layer by applying an insulating resin on the release film on which the electrode pattern has been formed; forming a substrate layer by laminating a substrate on the insulating layer; and removing the release film.
    Type: Grant
    Filed: April 18, 2014
    Date of Patent: November 28, 2017
    Assignee: INKTEC CO., LTD.
    Inventors: Kwang-Choon Chung, Ji Hoon Yoo, Joonki Seong, Dae sang Han
  • Patent number: 9524046
    Abstract: Provided herein is a method for producing a hybrid transparent electrode, the method including filling grooves of a substrate with a conductive metal ink composition; filling the grooves with residue conductive metal ink composition that remains on a surface of the substrate as the grooves are being filled with the conductive metal ink composition to form an electrode pattern; and forming a conductive layer including a conductive material on the electrode pattern.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: December 20, 2016
    Assignee: INKTEC CO., LTD.
    Inventors: Kwang-Choon Chung, In-Sook Yi, Ji Hoon Yoo, Joonki Seong, Dae sang Han
  • Publication number: 20160234943
    Abstract: Provided herein is a method for forming a transparent electrode film for display and the transparent electrode film for display, the method comprising forming an electrode pattern by printing a fine electrode pattern on a release film using a conductive ink composition; forming an insulating layer by applying an insulating resin on the release film on which the electrode pattern has been formed; forming a substrate layer by laminating a substrate on the insulating layer; and removing the release film.
    Type: Application
    Filed: April 18, 2014
    Publication date: August 11, 2016
    Applicant: INKTEC CO., LTD.
    Inventors: Kwang-Choon CHUNG, Ji Hoon Yoo, Joonki SEONG, Dae sang Han
  • Publication number: 20160181592
    Abstract: Provided herein is a method for forming a transparent electrode film, the method comprising forming an electrode pattern by printing an electrode pattern on a release film using a metal ink composition; forming an insulating layer by applying a curable resin on the release film on which the electrode pattern has been formed; forming a substrate layer by laminating a substrate on the insulating layer; removing the release film; and forming a conductive layer by applying a conductive material on the electrode pattern from which the release film has been removed.
    Type: Application
    Filed: May 16, 2014
    Publication date: June 23, 2016
    Inventors: Kwang-Choon Chung, In-Sook Yi, Ji Hoon Yoo, Joonki Seong, Dae Sang Han
  • Publication number: 20160132141
    Abstract: Provided herein is a method for producing a hybrid transparent electrode, the method including filling grooves of a substrate with a conductive metal ink composition; filling the grooves with residue conductive metal ink composition that remains on a surface of the substrate as the grooves are being filled with the conductive metal ink composition to form an electrode pattern; and forming a conductive layer including a conductive material on the electrode pattern.
    Type: Application
    Filed: May 16, 2014
    Publication date: May 12, 2016
    Inventors: Kwang-Choon CHUNG, In-Sook YI, Ji Hoon YOO, Joonki SEONG, Dae sang HAN
  • Patent number: 9090785
    Abstract: The present invention relates to a silver ink composition comprising: silver complexes obtained by reacting one or more silver compounds selected from chemical formula 1 with one or more ammonium carbamate-based compounds or ammonium carbonate-based compounds selected from chemical formula 2 to chemical formula 4; and oxime-based compounds.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: July 28, 2015
    Assignee: INKTEC CO., LTD.
    Inventors: Kwang-Choon Chung, Hyun Nam Cho, Ji Hoon Yoo, Dae Sang Han
  • Publication number: 20150068787
    Abstract: Provided herein is a conductive pattern making method and conductive pattern, the method including forming a groove such that its width in an inlet area is bigger than its width in an inner area; filling the groove with a conductive ink composition; and drying the conductive ink composition so that a solvent contained in the conductive ink composition inside the groove is volatilized to reduce the volume of the conductive ink composition.
    Type: Application
    Filed: September 8, 2014
    Publication date: March 12, 2015
    Inventors: Kwang-Choon Chung, Ji Hoon Yoo, Joonki Seong, Dae Sang Han, Nam-Boo Cho
  • Publication number: 20140026782
    Abstract: The present invention relates to a silver ink composition comprising: silver complexes obtained by reacting one or more silver compounds selected from chemical formula 1 with one or more ammonium carbamate-based compounds or ammonium carbonate-based compounds selected from chemical formula 2 to chemical formula 4; and oxime-based compounds.
    Type: Application
    Filed: April 20, 2012
    Publication date: January 30, 2014
    Applicant: INKTEC CO., LTD.
    Inventors: Kwang-Choon Chung, Hyun Nam Cho, Ji Hoon Yoo, Dae Sang Han