Patents by Inventor Hee-La KWAK

Hee-La KWAK 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: 20240084100
    Abstract: The present disclosure relates to a plasticizer composition having excellent plasticization efficiency and migration resistance with significantly improved weather resistance and cold resistance, and a vinyl chloride resin composition including the same.
    Type: Application
    Filed: January 4, 2022
    Publication date: March 14, 2024
    Inventors: Hee-La KWAK, Jaesong KIM, Myung-Ik YOO
  • Publication number: 20240043656
    Abstract: The present disclosure relates to an environmentally friendly plasticizer composition capable of reducing carbon emissions by including a recycled raw material, which has excellent gelling properties, plasticization efficiency, and weather resistance.
    Type: Application
    Filed: December 27, 2021
    Publication date: February 8, 2024
    Inventors: Hee-La KWAK, Jaesong KIM, Sungmin RYOO, Myung-lk YOO
  • Publication number: 20230054163
    Abstract: Provided are a plasticizer composition which is eco-friendly and exhibits excellent viscosity-controlling effect, processability, low-temperature properties, and migration resistance, and sealant/adhesive compositions including the same.
    Type: Application
    Filed: December 28, 2020
    Publication date: February 23, 2023
    Inventors: Hee-La KWAK, Jaesong KIM, Sungmin RYOO, Myung-lk YOO
  • Patent number: 8760040
    Abstract: The present invention relates to one of energy conversion devices, actuator and a dielectric layer used in the actuator. The present invention provides a polymer blend composition capable of easily controlling the ability of converting electrical energy to mechanical energy, which is prepared by blending a piezoelectric polymer with a flexible elastomeric block copolymer showing an effective miscibility therewith, and a tunable actuator using the same.
    Type: Grant
    Filed: November 3, 2011
    Date of Patent: June 24, 2014
    Assignee: Korea Institute of Science and Technology
    Inventors: Chong-Min Koo, Kyung-Youl Baek, Soon-Man Hong, Seung-Sang Hwang, Hee-La Kwak, Kyung-ho Min, Jin-Hong Lee, Kie-Yong Cho, Sang-Hee Park
  • Publication number: 20130049530
    Abstract: The present invention relates to an actuator which is one of the energy conversion devices, and is characterized by improving the ability to convert electrical energy into mechanical energy by way of using a dielectric elastomer composite comprising a filler with an efficient dispersibility. In case of using a conventional resilient dielectric layer, there was a problem in that the operating voltage is high, while advantageously exhibiting a fast response and a high strain.
    Type: Application
    Filed: August 24, 2010
    Publication date: February 28, 2013
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Chong Min Koo, Soon Man Hong, Seung Sang Hwang, Kyung Youl Baek, Soon Jong Kwak, Myung Hee Kim, Bo Ri Kim, Hee La Kwak, Kyung Ho Min, Youn Duk Park
  • Publication number: 20130040124
    Abstract: The present invention relates to transparent antistatic films using graphene, and methods for preparing the same. The films include conductive particles comprising a single-layer or multi-layer graphene, and a binder. The films are prepared by dispersing graphene in a solvent to obtain a graphene dispersion; dissolving a curable binder to a solvent to obtain a binder solution; mixing the graphene dispersion, the binder solution and optionally an additive to obtain a coating solution; applying the coating solution onto a substrate and drying the solution to form a coated film; and curing the coated film. According to the present invention, transparent or semitransparent antistatic films having excellent permeability, abrasion resistance, scratch resistance, chemical stability and dimensional stability can be prepared. The films also have superior adhesion to substrates and applicability, and thus may be advantageously applied to rigid or flexible substrates.
    Type: Application
    Filed: April 5, 2011
    Publication date: February 14, 2013
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Chong Min Koo, Soon Man Hong, Seung Sang Hwang, Soon Jong Kwak, Kyung Youl Baek, Kyung Ho Min, Youn Duk Park, Hee La Kwak, Myung Hee Kim, Bo Ri Kim, Seung Sock Choi, Tae Hee Han
  • Publication number: 20120248945
    Abstract: The present invention relates to one of energy conversion devices, actuator and a dielectric layer used in the actuator. The present invention provides a polymer blend composition capable of easily controlling the ability of converting electrical energy to mechanical energy, which is prepared by blending a piezoelectric polymer with a flexible elastomeric block copolymer showing an effective miscibility therewith, and a tunable actuator using the same.
    Type: Application
    Filed: November 3, 2011
    Publication date: October 4, 2012
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Chong-Min KOO, Kyung-Youl BAEK, Soon-Man HONG, Seung-Sang HWANG, Hee-La KWAK, Kyung-ho MIN, Jin-Hong LEE, Kie-Yong CHO, Sang-Hee PARK