Patents by Inventor Irina Nam

Irina Nam 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: 10358581
    Abstract: An adhesive film for polarizing plates, a polarizing plate including the same, and an optical display including the same are provided. An adhesive film for polarizing plates is formed of an adhesive composition including a (meth)acrylic copolymer and a cellulose ester binder. The (meth)acrylic copolymer contains an alkyl group, a hydroxyl group, an alicyclic group, and a hetero-alicyclic group. The adhesive film has a modulus at 30° C. of about 100,000 Pa or more.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: July 23, 2019
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Irina Nam, Dae Yun Kim, Young Jong Kim, Won Kim, In Cheon Han
  • Patent number: 10240068
    Abstract: An adhesive film of the present invention comprises a (meth)acrylate-based copolymer and a cross-linking agent, and a gel fraction thereof is approximately 50-95%, and a ratio of change G? in storage modulus thereof, represented by the following formula 1, is 20% or less. G?=(G7?G1)/G1×100??[Formula 1] (In formula 1, G1 is a storage modulus at 25° C. when the adhesive film is matured at 23° C. and a relative humidity (RH) of 55% for one day, and G7 represents a storage modulus at 25° C. when the adhesive film is matured at 23° C. and an RH of 55% for seven days.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: March 26, 2019
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Irina Nam, Young Jong Kim, Hwan Sung Cheon, In Cheon Han
  • Patent number: 10241250
    Abstract: An adhesive composition for polarizing plates includes a (meth)acrylic copolymer prepared by copolymerization of a monomer mixture and a curing agent. The monomer mixture includes a hydroxyl group-containing (meth)acrylic monomer, a tertiary amine group-containing (meth)acrylic monomer and a monomer having a glass transition temperature (Tg) of about 100° C. or greater. The adhesive composition has a gel fraction of about 50% or greater after aging for 12 hours. An adhesive film is formed from the adhesive composition. An optical display includes the adhesive film.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: March 26, 2019
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Irina Nam, Inga Tuzovskaya, Young Jong Kim, Il Jin Kim, Hwan Sung Cheon
  • Publication number: 20170362462
    Abstract: A photocurable composition includes (A) a photocurable monomer and (B) a silicon-containing monomer or oligomer thereof, the silicon-containing monomer being represented by Formula 1
    Type: Application
    Filed: August 30, 2017
    Publication date: December 21, 2017
    Inventors: Chang Min LEE, Seung Jib CHOI, Ji Hye KWON, Irina NAM, Jin Seong PARK, Yeon Soo LEE, Kyoung Jin HA
  • Patent number: 9765244
    Abstract: An adhesive film for polarizing plates includes a (meth)acrylic copolymer obtained by polymerizing about 15 wt % to about 30 wt % of a (meth)acrylic monomer having a hetero-alicyclic ring. The adhesive film has a storage modulus (G?) of about 30 kPa or greater as determined from Frequency sweep testing at 85° C. by oscillation at an angular speed of 10?3 rad/s to 102 rad/s. An adhesive composition for the same, a polarizing plate including the same, and an optical display device including the same are also disclosed.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: September 19, 2017
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Won Kim, Ri Ra Jung, Irina Nam, Ha Yun Cho, In Cheon Han
  • Publication number: 20170253770
    Abstract: An adhesive film of the present invention comprises a (meth)acrylate-based copolymer and a cross-linking agent, and a gel fraction thereof is approximately 50-95%, and a ratio of change G? in storage modulus thereof, represented by the following formula 1, is 20% or less. [Formula 1] G?=(G7?G1)/G1×100 (In formula 1, G1 is a storage modulus at 25° C. when the adhesive film is matured at 23° C. and a relative humidity (RH) of 55% for one day, and G7 represents a storage modulus at 25° C. when the adhesive film is matured at 23° C. and an RH of 55% for seven days.
    Type: Application
    Filed: June 29, 2015
    Publication date: September 7, 2017
    Applicant: SAMSUNG SDI CO.,LTD
    Inventors: Irina NAM, Young Jong KIM, Hwan Sung CHEON, In Cheon HAN
  • Publication number: 20170145262
    Abstract: An adhesive film for polarizing plates, a polarizing plate including the same, and an optical display including the same are provided. An adhesive film for polarizing plates is formed of an adhesive composition including a (meth)acrylic copolymer and a cellulose ester binder. The (meth)acrylic copolymer contains an alkyl group, a hydroxyl group, an alicyclic group, and a hetero-alicyclic group. The adhesive film has a modulus at 30° C. of about 100,000 Pa or more.
    Type: Application
    Filed: November 23, 2016
    Publication date: May 25, 2017
    Inventors: Irina NAM, Dae Yun KIM, Young Jong KIM, Won KIM, In Cheon HAN
  • Patent number: 9624410
    Abstract: A polarizing plate including an adhesive film for polarizing plates and an optical display including the polarizing plate, the adhesive film being formed from an adhesive composition for polarizing plates, the adhesive composition including a tertiary amine group-containing (meth)acrylic copolymer; a cellulose resin; an isocyanate compound; and a metal chelate compound.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: April 18, 2017
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Irina Nam, Young Jong Kim, Il Jin Kim
  • Patent number: 9550923
    Abstract: An adhesive composition for polarizing plates includes a (meth)acrylic copolymer and a biphenyl group-containing photocuring agent. A polarizing plate includes an adhesive layer formed of the adhesive composition An optical display includes the polarizing plate.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: January 24, 2017
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Irina Nam, Woo Jin Jeong, Dong Heon Yun, In Cheon Han
  • Patent number: 9404024
    Abstract: An adhesive composition includes an acrylic copolymer having at least one alkyl group, at least one hydroxyl group, and at least one furyl based group; and a curing agent.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: August 2, 2016
    Assignee: CHEIL INDUSTRIES, INC.
    Inventors: Kyoung Jin Ha, Irina Nam, Lee Jun Kim, Kil Sung Lee, Eun Hwan Jeong, Woo Jin Jeong
  • Publication number: 20160177145
    Abstract: An adhesive composition for polarizing plates, a polarizing plate, and an optical display, the composition including a tertiary amine group-containing (meth)acrylic copolymer; a cellulose resin; an isocyanate compound; and a metal chelate compound.
    Type: Application
    Filed: December 16, 2015
    Publication date: June 23, 2016
    Inventors: Irina NAM, Young Jong KIM, Il Jin KIM
  • Publication number: 20160152877
    Abstract: An adhesive composition for polarizing plates includes a (meth)acrylic copolymer prepared by copolymerization of a monomer mixture and a curing agent. The monomer mixture includes a hydroxyl group-containing (meth)acrylic monomer, a tertiary amine group-containing (meth)acrylic monomer and a monomer having a glass transition temperature (Tg) of about 100° C. or greater. The adhesive composition has a gel fraction of about 50% or greater after aging for 12 hours. An adhesive film is formed from the adhesive composition. An optical display includes the adhesive film.
    Type: Application
    Filed: November 24, 2015
    Publication date: June 2, 2016
    Inventors: Irina Nam, Inga Tuzovskaya, Young Jong Kim, Il Jin Kim, Hwan Sung Cheon
  • Patent number: 9175196
    Abstract: The present invention relates to a photocurable adhesive composition. The photocurable adhesive composition comprises a urethane(meth)acrylate resin, a functional-group-containing polybutadiene, a photocurable monomer and a photoinitiator; and the functional group is either an epoxy group or a hydroxyl group. The photocurable adhesive composition ensures good outdoor readability, has outstanding adhesive properties, and impact strength and optical transparency, and minimizes the phenomenon whereby substantial contraction occurs during photocuring, and thus can be suitably used for a display.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: November 3, 2015
    Assignee: CHEIL INDUSTRIES, INC.
    Inventors: Kyoung Jin Ha, Ji Hye Kwon, Lee June Kim, Irina Nam, Se Il Oh, Seung Jib Choi
  • Publication number: 20150247070
    Abstract: An adhesive composition for polarizing plates includes a (meth)acrylic copolymer and a biphenyl group-containing photocuring agent. A polarizing plate includes an adhesive layer formed of the adhesive composition An optical display includes the polarizing plate.
    Type: Application
    Filed: February 11, 2015
    Publication date: September 3, 2015
    Inventors: Irina NAM, Woo Jin JEONG, Dong Heon YUN, In Cheon HAN
  • Patent number: 9086526
    Abstract: A photocurable adhesive composition, a module apparatus, and a method of assembling a module, the composition including a urethane (meth)acrylate binder, the composition having a viscosity of about 3,000 to about 6,000 cps at 25° C., and providing an adhesive film having an adhesive strength of about 30 N/cm2 or more.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: July 21, 2015
    Assignee: CHEIL INDUSTRIES, INC.
    Inventors: Kyoung Jin Ha, Ji Hye Kwon, Kil Sung Lee, Irina Nam, Lee June Kim
  • Publication number: 20140329927
    Abstract: The present invention relates to a photocurable adhesive composition. The photocurable adhesive composition comprises a urethane(meth)acrylate resin, a functional-group-containing polybutadiene, a photocurable monomer and a photoinitiator; and the functional group is either an epoxy group or a hydroxyl group. The photocurable adhesive composition ensures good outdoor readability, has outstanding adhesive properties, and impact strength and optical transparency, and minimizes the phenomenon whereby substantial contraction occurs during photocuring, and thus can be suitably used for a display.
    Type: Application
    Filed: August 6, 2012
    Publication date: November 6, 2014
    Inventors: Kyoung Jin Ha, Ji Hye Kwon, Lee June Kim, Irina Nam, Se Il Oh, Seung Jib Choi
  • Publication number: 20140296443
    Abstract: An adhesive composition includes an acrylic copolymer having at least one alkyl group, at least one hydroxyl group, and at least one furyl based group; and a curing agent.
    Type: Application
    Filed: June 16, 2014
    Publication date: October 2, 2014
    Inventors: Kyoung Jin HA, Irina NAM, Lee Jun KIM, Kil Sung LEE, Eun Hwan JEONG, Woo Jin JEONG
  • Patent number: 8834670
    Abstract: An optical adhesive composition includes a urethane (meth)acrylate resin having at least one hydroxyl group and at least one vinyl group, the urethane (meth)acrylate resin having a curing contraction ratio expressed by Equation 1 of about 0 to about 3%; and an adhesion of about 30 to about 80 kgf: Curing contraction ratio (%)=(A?B)/A×100,??[Equation 1] where A is a specific gravity of the optical adhesive composition before curing, and B is a specific gravity of the solid optical adhesive composition after curing.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: September 16, 2014
    Assignee: Cheil Industries, Inc.
    Inventors: Kyoung Jin Ha, Ji Hye Kwon, Kil Sung Lee, Irina Nam, Lee June Kim
  • Publication number: 20140186605
    Abstract: An adhesive film for polarizing plates includes a (meth)acrylic copolymer obtained by polymerizing about 15 wt % to about 30 wt % of a (meth)acrylic monomer having a hetero-alicyclic ring. The adhesive film has a storage modulus (G?) of about 30 kPa or greater as determined from Frequency sweep testing at 85° C. by oscillation at an angular speed of 10?3 rad/s to 102 rad/s. An adhesive composition for the same, a polarizing plate including the same, and an optical display device including the same are also disclosed.
    Type: Application
    Filed: December 30, 2013
    Publication date: July 3, 2014
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Won Kim, Ri Ra Jung, Irina Nam, Ha Yun Cho, In Cheon Han
  • Patent number: 8754172
    Abstract: An adhesive composition includes an acrylic copolymer having at least one alkyl group, at least one hydroxyl group, and at least one furyl based group; and a curing agent.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: June 17, 2014
    Assignee: Cheil Industries, Inc.
    Inventors: Kyoung Jin Ha, Irina Nam, Lee Jun Kim, Kil Sung Lee, Eun Hwan Jeong, Woo Jin Jeong