Patents by Inventor Won-Gu Choi

Won-Gu Choi 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: 20150203726
    Abstract: Provided is an adhesive composition comprising: a thermosetting epoxy resin formed with an epoxy copolymer containing a hydroxyl group; and a UV curable epoxy resin having an epoxy equivalence of 100 g/eq to 500 g/eq.
    Type: Application
    Filed: September 4, 2013
    Publication date: July 23, 2015
    Inventors: Sang Hwan Kim, Yong Hoon Lee, Dai Hyun Kim, Won Gu Choi, Jang Soon Kim
  • Publication number: 20140349055
    Abstract: The present invention relates to an adhesive composition, to an adhesive sheet, and to a touch panel. The present invention provides an adhesive composition, particularly an adhesive composition for a touch panel, which is prepared without using a low molecular weight polymer as an additive. The adhesive composition, the adhesive sheet, and the touch panel of the present invention exhibit superior heat resistance in a hardening process, a printed circuit board assembly process, or the like, and have superior physical properties such as optical characteristics, wettability, cuttability, workability, anti-curling properties, and durability.
    Type: Application
    Filed: August 8, 2014
    Publication date: November 27, 2014
    Inventors: Jang-Soon KIM, Yong-Hoon LEE, Eok-Hyung LEE, Hak-Rhim HAN, Won-Gu CHOI, Min-Seok SONG
  • Publication number: 20140329083
    Abstract: The present invention relates to an adhesive film for a touch panel, and to a touch panel. The adhesive film has superior heat resistance, optical characteristics, wettability, cuttability, anti-warpage characteristics and chemical resistance, and exhibits superior durability when applied to a touch panel.
    Type: Application
    Filed: July 14, 2014
    Publication date: November 6, 2014
    Inventors: Jang-Soon KIM, Min-Seok SONG, Yong-Hoon LEE, Eok-Hyung LEE, Won-Gu CHOI, Hak-Rhim HAN
  • Publication number: 20140256841
    Abstract: Disclosed is a sealing film for electronic paper having a multilayered structure. The multilayered film for electronic paper comprising a layered structure according to the present invention comprises: (a) a sealing layer formed with a material comprising a UV curable polymer resin composition or a UV transmitting polymer resin composition; and (b) a tack-free adhesive layer formed with a material comprising a UV curable polymer resin. The sealing film has excellent sealing properties and is tack-free at room temperature, and thus it is possible to minimize freezing of electrostatic particles inside a microcup sticking to the surface of a sealing material during manipulation thereof.
    Type: Application
    Filed: October 18, 2012
    Publication date: September 11, 2014
    Applicant: LG Hausys, Ltd.
    Inventors: Jang Soon Kim, Yong Hoon Lee, Won Gu Choi
  • Publication number: 20130029135
    Abstract: The present invention relates to an adhesive film for a touch panel, and to a touch panel. The adhesive film has superior heat resistance, optical characteristics, wettability, cuttability, anti-warpage characteristics and chemical resistance, and exhibits superior durability when applied to a touch panel.
    Type: Application
    Filed: April 5, 2011
    Publication date: January 31, 2013
    Applicant: LG HAUSYS, LTD.
    Inventors: Jang-Soon Kim, Min-Seok Song, Yong-Hoon Lee, Eok-Hyung Lee, Won-Gu Choi, Hak-Rhim Han
  • Publication number: 20130015909
    Abstract: The present invention relates to an adhesive composition for a touch panel, to an adhesive film, and to a touch panel. The adhesive composition according to the present invention provides an adhesive for a touch panel that has superior chemical resistance, superior durability under high-temperature or high-humidity conditions, and superior wettability or adhesion to a variety of adherends. In addition, the adhesive composition according to the present invention provides an adhesive which maintains superior resistant performance of a conductive layer and effectively prevents the corrosion of electrodes or the like when applied to a touch panel.
    Type: Application
    Filed: April 5, 2011
    Publication date: January 17, 2013
    Applicant: LG HAUSYS, LTD.
    Inventors: Jang-Soon Kim, Min-Seok Song, Eok-Hyung Lee, Hak-Rhim Han, Won-Gu Choi, Yong-Hoon Lee
  • Publication number: 20130004695
    Abstract: The present invention relates to an adhesive composition, to an adhesive sheet, and to a touch panel. The present invention provides an adhesive composition, particularly an adhesive composition for a touch panel, which is prepared without using a low molecular weight polymer as an additive. The adhesive composition, the adhesive sheet, and the touch panel of the present invention exhibit superior heat resistance in a hardening process, a printed circuit board assembly process, or the like, and have superior physical properties such as optical characteristics, wettability, cuttability, workability, anti-curling properties, and durability.
    Type: Application
    Filed: April 5, 2011
    Publication date: January 3, 2013
    Applicant: LG HAUSYS, LTD.
    Inventors: Jang-Soon Kim, Yong-Hoon Lee, Eok-Hyung Lee, Hak-Rhim Han, Won-Gu Choi, Min-Seok Song
  • Publication number: 20120231245
    Abstract: The present invention relates to an adhesive film and to a touch panel. According to the present invention, even when the adhesive film is applied to a touch panel, for example, a capacitive touch panel, and directly attached to a conductive layer, the adhesive film effectively prevents the resistance of the conductive layer from being raised and exhibits good heat resistance. In addition, according to the present invention, an adhesive film having superior durability, optical characteristics, cuttability, workability, wettability and resistance to warping is provided.
    Type: Application
    Filed: March 14, 2011
    Publication date: September 13, 2012
    Applicant: LG HAUSYS, LTD
    Inventors: Jang-Soon Kim, Min-Seok Song, Eok-Hyung Lee, Won-gu Choi, Jae-Gwan Lee, Yong-Hoon Lee, Hak-Rhim Han
  • Patent number: 7935281
    Abstract: Disclosed herein are an artificial marble using multicolor chips, particularly striped chips, and a method for preparing the artificial marble. Since the artificial marble comprises multicolor chips in a new form together with conventional single-color chips, it enables achievement of various appearances, including designs and colors, thereby being highly differentiated from conventional artificial marbles containing combination of single-color chips as well as displaying patterns and designs closely resembling natural granite.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: May 3, 2011
    Assignee: LG Chem, Ltd.
    Inventors: Min-Chul Sung, Bong-Hyun Kwon, Jae-Ho Oh, Won-Gu Choi, Jong-Cheol Lee
  • Patent number: 7935744
    Abstract: An artificial marble using transparent chips, and a process for preparing the same, in which transparent chips are prepared by crushing a flat plate made of a composite for the artificial marble, which does not contain an inorganic filler and thus maintains transparency, quartz chips are prepared by crushing a flat plate made of a mixture of the transparent chips and a composite for the artificial marble, which contains an inorganic filler, for uniforming the specific gravity of the quartz chips, and the artificial marble is prepared by applying the quartz chips to a raw material composite for the artificial marble, thereby allowing the artificial marble to have the uniform specific gravity and exhibit a quartz effect.
    Type: Grant
    Filed: June 27, 2006
    Date of Patent: May 3, 2011
    Assignee: LG Chem, Ltd.
    Inventors: Hang-Young Kim, Won-Gu Choi
  • Patent number: 7500899
    Abstract: Disclosed herein are an artificial marble using multicolor chips, particularly striped chips, and a method for preparing the artificial marble. Since the artificial marble comprises multicolor chips in a new form together with conventional single-color chips, it enables achievement of various appearances, including designs and colors, thereby being highly differentiated from conventional artificial marbles containing combinations of single-color chips as well as displaying patterns and designs closely resembling natural granite.
    Type: Grant
    Filed: October 31, 2005
    Date of Patent: March 10, 2009
    Assignee: LG Chem, Ltd.
    Inventors: Min-Chul Sung, Bong-Hyun Kwon, Jae-Ho Oh, Won-Gu Choi, Jong-Cheol Lee
  • Publication number: 20090045540
    Abstract: Disclosed herein are an artificial marble using multicolor chips, particularly striped chips, and a method for preparing the artificial marble. Since the artificial marble comprises multicolor chips in a new form together with conventional single-color chips, it enables achievement of various appearances, including designs and colors, thereby being highly differentiated from conventional artificial marbles containing combinations of single-color chips as well as displaying patterns and designs closely resembling natural granite.
    Type: Application
    Filed: September 12, 2008
    Publication date: February 19, 2009
    Applicant: LG Chem, LTD.
    Inventors: Min-Chul SUNG, Bong-Hyun KWON, Jae-Ho OH, Won-Gu CHOI, Jong-Cheol LEE
  • Publication number: 20070004824
    Abstract: An artificial marble using transparent chips, and a process for preparing the same, in which transparent chips are prepared by crushing a flat plate made of a composite for the artificial marble, which does not contain an inorganic filler and thus maintains transparency, quartz chips are prepared by crushing a flat plate made of a mixture of the transparent chips and a composite for the artificial marble, which contains an inorganic filler, for uniforming the specific gravity of the quartz chips, and the artificial marble is prepared by applying the quartz chips to a raw material composite for the artificial marble, thereby allowing the artificial marble to have the uniform specific gravity and exhibit a quartz effect.
    Type: Application
    Filed: June 27, 2006
    Publication date: January 4, 2007
    Inventors: Hang-Young Kim, Won-Gu Choi
  • Publication number: 20060217033
    Abstract: Disclosed herein are an artificial marble using multicolor chips, particularly striped chips, and a method for preparing the artificial marble. Since the artificial marble comprises multicolor chips in a new form together with conventional single-color chips, it enables achievement of various appearances, including designs and colors, thereby being highly differentiated from conventional artificial marbles containing combinations of single-color chips as well as displaying patterns and designs closely resembling natural granite.
    Type: Application
    Filed: October 31, 2005
    Publication date: September 28, 2006
    Inventors: Min-Chul Sung, Bong-Hyun Kwon, Jae-Ho Oh, Won-Gu Choi, Jong-Cheol Lee