Patents by Inventor Dae Won Cho

Dae Won 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: 12234350
    Abstract: A polyolefin thermoplastic elastomer composition for an airbag chute, includes a polypropylene, an olefin block copolymer, and a dendrimer as a material applied to a raw material of a passenger airbag chute. An olefin elastomer composite resin composition for an airbag chute includes 30-80 parts by weight of a polypropylene resin, 30-70 parts by weight of an olefin block copolymer, and 0.1-5 parts by weight of a dendrimer based on 100 parts by weight of the olefin elastomer composite resin composition. The olefin elastomer composite resin composition for an airbag chute, improves the dispersion of the elastomer by applying a high-flow elastomer and a low-flow polypropylene, and improves flowability and meltability characteristics without deteriorating physical properties by applying the dendrimer.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: February 25, 2025
    Assignee: CEPLA CO., LTD.
    Inventors: Chang Won Chae, Sung Yeon Lee, Chang Min Hong, Jong Soo Park, Jae Myung Rhee, Jin Young Huh, Kyu Haeng Cho, Dae Keun Kim, Gwang Ho Go, Poong Hyun Choi
  • Publication number: 20240288124
    Abstract: In a high pressure gas charging system and method, the system includes a charging container, a fluid supply part and a high pressure charging part. A high pressure gas is charged in the charging container. The fluid supply part is connected to a first side of the charging container, and is configured to supply incompressible fluid into the charging container before charging the high pressure gas. The high pressure charging part is connected to a second side of the charging container, and is configured to charge the high pressure gas into the charging container in which the incompressible fluid is already supplied. The incompressible fluid is supplied to the charging container until an inner pressure of the charging container reaches a predetermined pressure, and the incompressible fluid is removed to outside through the fluid supply part as the high pressure gas is charged into the charging container.
    Type: Application
    Filed: July 22, 2022
    Publication date: August 29, 2024
    Inventors: Dae-hwan KIM, Gyubaek CHO, Seung-Hoon BAE, Tae Kook PARK, Dae Won CHO, Sunmin KIM, Jae-Hyung KIM, Sang Hyuk LEE, Sang Kyo KIM
  • Patent number: 11046821
    Abstract: An emulsion particle, an emulsion including the same, and a method of manufacturing an emulsion are provided. The emulsion particle includes: a core derived from a polymer of an unsaturated ethylenic monomer and including a first sub core and a second sub core surrounding the first sub core; and a shell surrounding the core and including an alkali-soluble resin, wherein the first sub core includes a polymer having a first glass transition temperature, and the second sub core includes a polymer having a second glass transition temperature lower than the first glass transition temperature.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: June 29, 2021
    Assignee: Hanwha Chemical Corporation
    Inventors: Jeong Hyun Choi, Hee Yun Kim, Tae Hoon Yeum, Su Jin Lee, Dae Won Cho
  • Patent number: 10954370
    Abstract: An emulsion, and a method of preparing an emulsion are provided. The emulsion includes styrene/acrylic latex particles and a metal stearate-based material.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: March 23, 2021
    Assignee: Hanwha Chemical Corporation
    Inventors: Hee Yun Kim, Tae Hoon Yeum, Su Jin Lee, Dae Won Cho, Jeong Hyun Choi
  • Publication number: 20190367741
    Abstract: An emulsion, a method of preparing an emulsion, and a method of forming a coating film using an emulsion are provided. The emulsion includes latex particles, wherein each of the latex particles comprises a core portion formed of a polymer matrix having an internal network structure, and a shell portion which surrounds the core portion.
    Type: Application
    Filed: March 14, 2018
    Publication date: December 5, 2019
    Inventors: Dae Won Cho, Hee Yun Kim, Tae Hoon Yeum, Su Jin Lee, Jeong Hyun Choi
  • Publication number: 20190352441
    Abstract: An alkali-soluble resin, a method of preparing an alkali-soluble resin, and an emulsion polymer including an alkali-soluble resin are provided. The alkali-soluble resin includes a first monomer including at least one of an acrylic monomer, a methacrylic monomer, and a styrene-based monomer and having no allyl group; and a second monomer having an allyl group, wherein the alkali-soluble resin is prepared by polymerizing the first monomer and the second monomer.
    Type: Application
    Filed: January 18, 2018
    Publication date: November 21, 2019
    Inventors: Su Jin Lee, Hee Yun Kim, Tae Hoon Yeum, Dae Won Cho, Jeong Hyun Choi
  • Publication number: 20190352493
    Abstract: An emulsion, and a method of preparing an emulsion are provided. The emulsion includes styrene/acrylic latex particles and a metal stearate-based material.
    Type: Application
    Filed: January 29, 2018
    Publication date: November 21, 2019
    Inventors: Hee Yun Kim, Tae Hoon Yeum, Su Jin Lee, Dae Won Cho, Jeong Hyun Choi
  • Publication number: 20190330427
    Abstract: An emulsion particle, an emulsion including the same, and a method of manufacturing an emulsion are provided. The emulsion particle includes: a core derived from a polymer of an unsaturated ethylenic monomer and including a first sub core and a second sub core surrounding the first sub core; and a shell surrounding the core and including an alkali-soluble resin, wherein the first sub core includes a polymer having a first glass transition temperature, and the second sub core includes a polymer having a second glass transition temperature lower than the first glass transition temperature.
    Type: Application
    Filed: December 29, 2017
    Publication date: October 31, 2019
    Inventors: Jeong Hyun CHOI, Hee Yun KIM, Tae Hoon YEUM, Su Jin LEE, Dae Won CHO
  • Patent number: 10053571
    Abstract: The present invention provides a polymer emulsion having heat sealability for a blister package, and a method for preparing the same. Since the polymer emulsion of the present invention includes latex particles having an average particle diameter of a nanosize and a low unimodal particle size distribution, it may exhibit uniform and stable emulsion properties, particularly excellent heat sealability, and thus may be suitably used for a blister package and on the like. Furthermore, the polymer emulsion of the present invention is polymerized in an aqueous medium without using an organic solvent, and thus enables provision of a blister package with minimized harmfulness to a human body and the environment.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: August 21, 2018
    Assignee: HANWHA CHEMICAL CORPORATION
    Inventors: Su Jin Lee, Dae Won Cho, Jeong Hyun Choi, Sang Hyun Cho
  • Publication number: 20170204261
    Abstract: The present invention provides a polymer emulsion having heat sealability for a blister package, and a method for preparing the same. Since the polymer emulsion of the present invention includes latex particles having an average particle diameter of a nanosize and a low unimodal particle size distribution, it may exhibit uniform and stable emulsion properties, particularly excellent heat sealability, and thus may be suitably used for a blister package and on the like. Furthermore, the polymer emulsion of the present invention is polymerized in an aqueous medium without using an organic solvent, and thus enables provision of a blister package with minimized harmfulness to a human body and the environment.
    Type: Application
    Filed: July 8, 2015
    Publication date: July 20, 2017
    Inventors: Su Jin LEE, Dae Won CHO, Jeong Hyun CHOI, Sang Hyun CHO
  • Publication number: 20120025177
    Abstract: An Ir complex having a pyridyl triazole ligand substituted with at least one substituent on its pyridyl ring, and a light emitting material comprising such Ir complex. Such light emitting material was found to have a significantly enhanced photophosphorescence quantum yield and hypsochromic blue shifted photophosphorescent emission over other Ir complexes with a pyridyl triazole ligand having no substituent in its pyridine ring. Use of such light emitting material and an organic light emitting device including the same.
    Type: Application
    Filed: February 6, 2009
    Publication date: February 2, 2012
    Applicant: SOLVAY SA
    Inventors: Ung Chan Yoon, Hea Jung Park, Dae Won Cho, Jung Hei Choi