Patents by Inventor Hyun-ju Cho

Hyun-ju Cho 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: 9018303
    Abstract: The present invention relates to an acrylic pressure-sensitive adhesive composition. More specifically, the present invention relates to an acrylic pressure-sensitive adhesive composition comprising a) acrylic copolymers; b) a hydrophilic plasticizer; and c) a hydrophobic plasticizer. The acrylic pressure-sensitive adhesive composition according to the present invention has no mura under moisture and heat resistant condition, and thus has an excellent stain resistance of adherends, and an excellent wettability, endurance reliability, transparency and adhesion reliability, regardless of whether surface property of the adherend is hydrophillic or hydrophobic.
    Type: Grant
    Filed: October 17, 2007
    Date of Patent: April 28, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Dong Han Kho, Hyun Ju Cho, Suk Ky Chang, Jang Soon Kim, Yoon Jung Baek
  • Publication number: 20150105501
    Abstract: The present invention relates to a polyalkylene carbonate-based resin film and a manufacturing method thereof. The polyalkylene carbonate-based resin film according to the present invention has biodegradability and complete combustion decomposability to show environment-friendly feature and rubber-like properties. Therefore, the resin film can be applied to various resin molded products requiring elasticity, and in particular, preferably applied to resin molded products such as disposable groves, disposable containers, and disposable rubber molded products.
    Type: Application
    Filed: June 21, 2013
    Publication date: April 16, 2015
    Applicant: LG CHEM, Ltd.
    Inventors: Hyun Ju Cho, Jin-Hwa Seo, Seung Young Park, Jae-Ryoon Kim, Boo-Ho Seo
  • Publication number: 20150051314
    Abstract: The present invention relates to an emulsion composition for manufacturing a polyalkylene carbonate molded product and a molded product manufactured by using the same. The emulsion composition according to the present invention provides a resin molded product that has biodegradability and complete combustion decomposability to show environment-friendly feature and rubber-like properties.
    Type: Application
    Filed: June 21, 2013
    Publication date: February 19, 2015
    Inventors: Hyun Ju Cho, Jin-Hwa Seo, Seung Young Park
  • Publication number: 20140272401
    Abstract: The present invention relates to an adhesive film for protecting a wafer including an adhesive layer formed on one surface of a substrate film. The present invention relates to an adhesive film for protecting the surface of a semiconductor wafer, wherein the surface film has a tensile strength of 2-10 kg/mm2 and an elongation until breakage of 50-200%, and the gel content of the adhesive layer is greater than or equal to 80%. The adhesive film for protecting the wafer maintains cutting ability and machinability, while preventing the generation of bending and wafer breaking phenomena due to the decrease of the wafer thickness. In addition, the adhesive film may not melt at high temperatures, and the yield while grinding the wafer may be increased.
    Type: Application
    Filed: October 22, 2012
    Publication date: September 18, 2014
    Applicant: LG Hausys, Ltd.
    Inventors: Jang Soon Kim, Hyun Ju Cho, Ju Yong Seo
  • Patent number: 8664326
    Abstract: The present invention relates to an acrylic pressure sensitive adhesive composition comprising acrylic copolymers wherein the gel fraction represented by the specific formula (1) is 45 to 75%, the swelling ratio represented by the specific formula (2) is 5 to 20, and the weight average molecular weight of non-crosslinking polymer contained in a pressure sensitive adhesive prepared from the pressure sensitive adhesive composition sol eluted from the adhesive prepared by the composition with ethyl acetate is at least 300,000.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: March 4, 2014
    Assignee: LG Chem, Ltd.
    Inventors: An Na Lee, No Ma Kim, Jine Young Lee, Hyun Ju Cho, Suk Ky Chang
  • Publication number: 20130241862
    Abstract: The embodiment examples of the present invention relate to a double-sided adhesive sheet and a display device for a touch panel including the same. The double-sided adhesive sheet, according to the embodiment examples of the present invention, comprises a transparent acryl-based resin layer as a substrate, can provide a double-sided adhesive sheet which can be detached and recycled after attaching to the touch panel and a display device module, by means of the adhesive agent layers that are formed on both sides having different detaching force, can improve visibility of the display device by being coupled between the touch panel and the display device module for eliminating an air gap, and can minimize the difference in the bending rate of each layer of the double-sided adhesive sheet for eliminating visibility exhaustion as much as possible.
    Type: Application
    Filed: November 11, 2011
    Publication date: September 19, 2013
    Applicant: LG HAUSYS, LTD.
    Inventors: Jang-Soon Kim, James Jung, Sang-Hun Choi, Young-Myung Gee, Hyung-Min Cha, No-Woong Park, Se-Hee Park, Hyun-Ju Cho
  • Publication number: 20120270381
    Abstract: Provided are a die attach film, a semiconductor wafer, and a semiconductor packaging method. The die attach film can prevent generation of burrs or scattering of chips in a dicing process, and exhibits excellent expandability and pick-up characteristics in a die pressure-sensitive adhesive process. Further, the die attach film can prevent release, shifting, or deflection of a chip in a wire pressure-sensitive adhesive or molding process. Thus, it is possible to improve embeddability, inhibit warpage of a wafer or wiring substrate, and enhance productivity in a semiconductor packaging process.
    Type: Application
    Filed: October 16, 2009
    Publication date: October 25, 2012
    Applicant: LG Chem, Ltd.
    Inventors: Hyo Sook Joo, Suk Ky Chang, Hyo Soon Park, Yong Su Park, Jong Wan Hong, Hyun Ju Cho, Jang Soon Kim
  • Publication number: 20110109849
    Abstract: The present invention relates to an acrylic composition for optical elements, a protective film for optical elements, a polarizer, and a liquid crystal display (LCD). According to the present invention, by adding a proper amount of an antistatic agent to a composition including a photo-polymerizable acrylic polymer, which is cured by irradiation of radial rays such as ultraviolet rays (UVs), and a polymerization initiator at a predetermined ratio, an aging process can be skipped during curing, thereby simplifying a preparation process and providing an acrylic composition for optical elements, a protective film for optical elements, a polarizer, and an LCD, which have excellent anti-static property during peeling or use, and superior endurance reliability, workability, adhesive property, wettability, and optical characteristics.
    Type: Application
    Filed: July 1, 2009
    Publication date: May 12, 2011
    Inventors: Hyun Jee Yoo, Hyun Ju Cho, Hak Lim Kim, Jang Soon Kim, Mun Seop Song
  • Publication number: 20110003091
    Abstract: The present invention relates to an acrylic pressure-sensitive adhesive composition. More specifically, the present invention relates to an acrylic pressure-sensitive adhesive composition comprising a) acrylic copolymers; b) a hydrophilic plasticizer; and c) a hydrophobic plasticizer. The acrylic pressure-sensitive adhesive composition according to the present invention has no mura under moisture and heat resistant condition, and thus has an excellent stain resistance of adherends, and an excellent wettability, endurance reliability, transparency and adhesion reliability, regardless of whether surface property of the adherend is hydrophillic or hydrophobic.
    Type: Application
    Filed: October 17, 2007
    Publication date: January 6, 2011
    Applicant: LG CHEM, LTD.
    Inventors: Dong Han Kho, Hyun Ju Cho, Suk Ky Chang, Jang Soon Kim, Yoon Jung Baek
  • Patent number: 7863360
    Abstract: The present invention relates to an acrylic pressure sensitive adhesive composition, specifically, an acrylic pressure sensitive adhesive composition having improved anti-static properties, comprising acrylic copolymers, chelating agent which may form a bond with metal ion; and alkali metal salts, and prevent whitening appearance under high temperature and humidity condition as well as static electricity without change of the durability, transparency, and adhesion.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: January 4, 2011
    Assignee: LG Chem, Ltd.
    Inventors: Hyun Ju Cho, Jang Soon Kim, Suk Ky Chang
  • Patent number: 7816094
    Abstract: A method for quantitative analysis of interactions between fluorescein-labeled HIF-1? (alpha) C-terminal peptides and cAMP-responsive element binding protein (CBP) or p300 proteins, and a method of screening inhibitors against the formation of HIF-1?-p300 or HIF-1?-CBP protein complexes using the above method is described.
    Type: Grant
    Filed: May 17, 2007
    Date of Patent: October 19, 2010
    Assignee: Korea Institute of Science and Technology
    Inventors: Eun-Gyeong Yang, Dae-Ro Ahn, Hyun-Ju Cho
  • Patent number: 7691966
    Abstract: The present invention relates to a method for analyzing the interaction between HIF-1 peptide and VBC protein using fluorescence polarization, more precisely, a method for quantitative analysis of formation of HIF-1-VBC protein complex which is composed of the steps of 1) preparing a fluorescent probe by attaching a fluorescein to hydroxyproline containing HIF-1 peptide; 2) reacting the fluorescent probe with VBC protein; and 3) measuring the fluorescence polarization of the above reactant and then comparing the fluorescence polarization with that of the fluorescent probe itself to investigate the changes of fluorescence polarization; a method for screening an inhibitor of the binding of HIF-1 peptide and VBC protein using the above method; and a method for analyzing the activity of prolyl hydroxylase using the above method.
    Type: Grant
    Filed: December 6, 2005
    Date of Patent: April 6, 2010
    Assignee: Korea Institute of Science and Technology
    Inventors: Eun Gyeong Yang, Hyun Ju Cho, Hyunsung Park
  • Patent number: 7655285
    Abstract: The present invention relates to acrylic adhesive compositions, and more precisely, acrylic adhesive compositions having improved anti-static capacity without damaging durability, transparency and peel strength which are composed of an acrylic copolymer, a hydrophilic complex compound and a hydrophobic complex compound to sufficiently inhibit the development of static electricity, regardless of the surface condition (hydrophobicity or hydrophilicity) of a polarizing plate.
    Type: Grant
    Filed: October 16, 2006
    Date of Patent: February 2, 2010
    Assignee: LG Chem, Ltd.
    Inventors: Hyun-ju Cho, Jang-soon Kim, Suk-ky Chang
  • Publication number: 20090029390
    Abstract: The present invention relates to a method for quantitative analysis of interactions between fluorescein-labeled HIF-1? (alpha) C-terminal peptides and cAMP-responsive element binding protein (CBP) or p300 proteins, and a method of screening inhibitors against the formation of HIF-1?-p300 or HIF-1?-CBP protein complexes using the above method. Therefore, the fluorescence polarization (FP) measurement method of the present invention is useful for systemically evaluating the HIF-1?-CBP or HIF-1?-p300 interactions, and examining the effects of posttranslational modifications (hydroxylation, S-nitrosylation, and phosphorylation) of the C-TAD peptide of HIF-1? on the recruitment of p300.
    Type: Application
    Filed: May 17, 2007
    Publication date: January 29, 2009
    Applicant: Korea Institute of Science and Technology
    Inventors: Eun-Gyeong YANG, Dae-Ro Ahn, Hyun-Ju Cho
  • Patent number: 7462390
    Abstract: The present invention provides an acrylic pressure-sensitive adhesive composition for a polarizing film comprising a) 100 parts by weight of a (meth)acrylic copolymer having a high molecular weight, which is copolymerized from a (meth)acrylic acid ester monomer and a vinylic and/or an acrylic monomer having a functional group capable of crosslinking with a multifunctional crosslinking agent and has a weight-average molecular weight of at least 1,000,000; b) 5-20 parts by weight of a (meth)acrylic copolymer having a low molecular weight, which comprises the same monomer of the main chain of a) the (meth)acrylic copolymer having a high molecular weight, has a weight-average molecular weight of 2,000-30,000 and comprises 0.01-1 monomer, per one molecule of the copolymer on average, having a functional group capable of reacting with the crosslinking agent of c); and c) 0.01-10 parts by weight of a multifunctional crosslinking agent.
    Type: Grant
    Filed: April 20, 2005
    Date of Patent: December 9, 2008
    Assignee: LG Chem, Ltd.
    Inventors: Se-ra Kim, Suk-ky Chang, Hyun-ju Cho, Jae-gwan Lee, In-cheon Han, Hye-ran Seong
  • Publication number: 20070264499
    Abstract: The present invention relates to an adhesive film functionalizing color compensation and near infrared ray blocking and a plasma display panel filter employing the same. The present invention provides an adhesive film for a plasma display panel comprising an acryl-based adhesive and a near infrared ray absorbing dye. The present invention also provides an adhesive film for a plasma display panel comprising an acryl-based adhesive and a neon-cut dye. The adhesive film may further comprise a near infrared ray absorbing dye. The adhesive film of the present invention has superior durability at high temperature and humidity with little transmittance change and superior thermal stability. When further comprising a near infrared ray absorbing dye, it exerts both color compensation and near infrared ray blocking performances.
    Type: Application
    Filed: April 16, 2007
    Publication date: November 15, 2007
    Applicant: LG CHEM, LTD.
    Inventors: Hyun-Seok Choi, Sang-Hyun Park, Yeon-Keun Lee, In-Seok Hwang, Jung-Doo Kim, Hyun-Ju Cho, Dong-Wook Lee
  • Publication number: 20070087133
    Abstract: The present invention relates to acrylic adhesive compositions, and more precisely, acrylic adhesive compositions having improved anti-static capacity without damaging durability, transparency and peel strength which are composed of an acrylic copolymer, a hydrophilic complex compound and a hydrophobic complex compound to sufficiently inhibit the development of static electricity, regardless of the surface condition (hydrophobicity or hydrophilicity) of a polarizing plate.
    Type: Application
    Filed: October 16, 2006
    Publication date: April 19, 2007
    Applicant: LG CHEM, LTD.
    Inventors: Hyun-ju Cho, Jang-soon Kim, Suk-ky Chang
  • Publication number: 20070059522
    Abstract: A multifunctional adhesive film for a plasma display panel has an acryl-based adhesive and a near infrared ray blocking dye and a plasma display panel filter employs the same. Multifunctional adhesive film for a plasma display panel has an acryl-based adhesive, a neon-cut dye, and may further having a near infrared ray blocking dye. The multifunctional adhesive film has superior durability at high temperature and humidity with little transmittance change and superior thermal stability. When a near infrared ray blocking dye is included, it exerts both color compensation and near infrared ray blocking performances. Because the film has superior adhesivity in itself, an additional adhesive layer is unnecessary, which simplifies the manufacturing process of a plasma display panel filter and a plasma display panel.
    Type: Application
    Filed: November 14, 2006
    Publication date: March 15, 2007
    Inventors: Hyun-Seok Choi, Sang-Hyun Park, Yeon-Keun Lee, In-Seok Hwang, Jung-Doo Kim, Hyun-Ju Cho, Dong-Wook Lee
  • Publication number: 20070020718
    Abstract: The present invention relates to a method for analyzing the interaction between HIF-1 peptide and VBC protein using fluorescence polarization, more precisely, a method for quantitative analysis of formation of HIF-1-VBC protein complex which is composed of the steps of 1) preparing a fluorescent probe by attaching a fluorescein to hydroxyproline containing HIF-1 peptide; 2) reacting the fluorescent probe with VBC protein; and 3) measuring the fluorescence polarization of the above reactant and then comparing the fluorescence polarization with that of the fluorescent probe itself to investigate the changes of fluorescence polarization; a method for screening an inhibitor of the binding of HIF-1 peptide and VBC protein using the above method; and a method for analyzing the activity of prolyl hydroxylase using the above method.
    Type: Application
    Filed: December 6, 2005
    Publication date: January 25, 2007
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Eun Gyeong YANG, Hyun Ju CHO, Hyunsung PARK
  • Publication number: 20050239965
    Abstract: The present invention provides an acrylic pressure-sensitive adhesive composition for a polarizing film comprising a) 100 parts by weight of a (meth)acrylic copolymer having a high molecular weight, which is copolymerized from a (meth)acrylic acid ester monomer and a vinylic and/or an acrylic monomer having a functional group capable of crosslinking with a multifunctional crosslinking agent and has a weight-average molecular weight of at least 1,000,000; b) 5-20 parts by weight of a (meth)acrylic copolymer having a low molecular weight, which comprises the same monomer of the main chain of a) the (meth)acrylic copolymer having a high molecular weight, has a weight-average molecular weight of 2,000-30,000 and comprises 0.01-1 monomer, per one molecule of the copolymer on average, having a functional group capable of reacting with the crosslinking agent of c); and c) 0.01-10 parts by weight of a multifunctional crosslinking agent.
    Type: Application
    Filed: April 20, 2005
    Publication date: October 27, 2005
    Inventors: Se-ra Kim, Suk-ky Chang, Hyun-ju Cho, Jae-gwan Lee, In-cheon Han, Hye-ran Seong