Patents by Inventor Ok-Hwa Jeon

Ok-Hwa Jeon 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: 11938765
    Abstract: According to the present disclosure, there is disclosed a hybrid tire cord capable of realizing high performance and weight reduction of a tire by having strong adhesion to rubber and excellent fatigue resistance as well as high tenacity and high modulus by providing a cabled yarn in which an aramid hybrid Z-twisted yarn, composed of an aramid multifilament yarn and an aramid spun yarn, and a general-purpose Z-twisted yarn are S-twisted together. There is also provided a method for manufacturing the same.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: March 26, 2024
    Assignee: KOLON INDUSTRIES, INC.
    Inventors: Min Ho Lee, Ok Hwa Jeon, Jongha Yim
  • Publication number: 20240076810
    Abstract: The present application relates to a hybrid cord including a bio-based nylon primarily twisted yarn. According to the present application, while including a primarily twisted yarn including bio-based nylon having a higher modulus compared to chemical-based nylon, there is provided a hybrid cord and has elongation and fatigue resistance equivalent to or higher than commercially required levels (i.e., the level that the cord including a conventional chemical-based nylon primarily twisted yarn has).
    Type: Application
    Filed: April 27, 2022
    Publication date: March 7, 2024
    Inventors: Min Ho LEE, II CHUNG, Ok Hwa JEON, Jongha YIM, Sung Gyu LEE
  • Publication number: 20230357605
    Abstract: The present application relates to an adhesive composition including a naturally occurring acid, a nitrogen compound, and a latex; and a rubber reinforcing material and an article including the same.
    Type: Application
    Filed: November 22, 2021
    Publication date: November 9, 2023
    Inventors: Sung Gyu LEE, Ok Hwa JEON, Min Ho LEE
  • Publication number: 20230278319
    Abstract: This invention relates to rubber reinforcing material with reduced weight, a method for preparing the same, and a tire including the same. According to this invention, there is provided a rubber reinforcing material that has a thin thickness and light weight, and yet has excellent durability. The reinforcing material not only reduces the weight of a tire, but also enables realization of improved rolling resistance.
    Type: Application
    Filed: August 13, 2021
    Publication date: September 7, 2023
    Inventors: Sang Woo LEE, Ok Hwa JEON, Min Ho LEE, Sung Gyu LEE
  • Publication number: 20230173777
    Abstract: This invention relates to rubber reinforcing material with reduced weight, a method for preparing the same, and a tire including the same. According to this invention, there is provided a rubber reinforcing material that has a thin thickness and a light weight, and yet has excellent durability. The reinforcing material not only reduces the weight of a tire, but also enables realization of improved rolling resistance.
    Type: Application
    Filed: October 1, 2021
    Publication date: June 8, 2023
    Inventors: Sang Woo LEE, OK Hwa JEON, Min Ho LEE, Sung Gyu LEE
  • Publication number: 20220388342
    Abstract: This invention relates to an adhesive composition for a tire cord including: an epoxy compound; latex; an alicyclic polyurethane resin having a weight average molecular weight (Mw) of 250,000 to 350,000; an amine compound; and water, a tire cord including an adhesive layer formed form the adhesive composition, and a tire including the tire cord.
    Type: Application
    Filed: April 7, 2021
    Publication date: December 8, 2022
    Inventors: Sung Gyu LEE, Ok Hwa JEON, Min Ho LEE
  • Publication number: 20220388341
    Abstract: This invention relates to an adhesive composition for a tire cord, a tire cord including an adhesive layer formed from the adhesive composition, and a tire including the tire cord. According to the present disclosure, an environment-friendly adhesive composition for a tire cord that can not only improve adhesive strength between tire rubber and a tire cord, but can also improve strength of a tire cord is provided.
    Type: Application
    Filed: April 9, 2021
    Publication date: December 8, 2022
    Inventors: Sung Gyu LEE, II CHUNG, Ok Hwa JEON, Min Ho LEE
  • Publication number: 20220372347
    Abstract: The present invention relates to an adhesive composition including a latex (A), a polyurethane (B), an amine-based adhesion promoter (C), and a water-containing solvent (G). The composition is eco-friendly, has a low risk of fire, and has excellent adhesive strength.
    Type: Application
    Filed: April 8, 2021
    Publication date: November 24, 2022
    Inventors: Sung Gyu LEE, Ok Hwa JEON, Min Ho LEE
  • Publication number: 20220372672
    Abstract: The present invention relates to a tire cord having excellent durability while being thin in thickness, a manufacturing method thereof and a tire comprising the same.
    Type: Application
    Filed: December 21, 2020
    Publication date: November 24, 2022
    Inventors: Sung Gyu LEE, Ok Hwa JEON, Min-ho LEE
  • Publication number: 20220307162
    Abstract: The present disclosure relates to a method for manufacturing a hybrid tire cord that utilizes a difference in fineness, and thereby can be more easily manufactured in a form covered with aramid, has uniform physical properties, and improves tire performance.
    Type: Application
    Filed: September 23, 2020
    Publication date: September 29, 2022
    Inventors: Min Ho LEE, Ok Hwa JEON, Jongha YIM
  • Publication number: 20210370720
    Abstract: According to the present disclosure, there is disclosed a hybrid tire cord capable of realizing high performance and weight reduction of a tire by having strong adhesion to rubber and excellent fatigue resistance as well as high tenacity and high modulus by providing a cabled yarn in which an aramid hybrid Z-twisted yarn composed of an aramid multifilament yarn and an aramid spun yarn; and a general-purpose Z-twisted yarn are S-twisted together. There is also provided a method for manufacturing the same.
    Type: Application
    Filed: December 27, 2019
    Publication date: December 2, 2021
    Inventors: Min Ho LEE, Ok Hwa JEON, Jongha YIM
  • Publication number: 20210154975
    Abstract: One embodiment of the present disclosure provides a tire cord including: a textile substrate, an adhesive layer disposed on the textile substrate, and a latex layer disposed on the adhesive layer, wherein the adhesive layer includes resorcinol-formaldehyde-latex (RFL), and wherein the latex layer is formed by a latex dispersion.
    Type: Application
    Filed: June 27, 2019
    Publication date: May 27, 2021
    Inventors: Jongha YIM, Min Ho LEE, OK Hwa JEON
  • Publication number: 20200122508
    Abstract: One embodiment of the present invention provides a rubber reinforcement material which comprises a fiber substrate, an adhesive layer disposed on the fiber substrate, a rubber compound layer disposed on the adhesive layer, and resorcinol-formaldehyde-latex (RFL), wherein the rubber compound layer has a thickness of 5 ?m to 200 ?m.
    Type: Application
    Filed: June 25, 2018
    Publication date: April 23, 2020
    Applicant: KOLON INDUSTRIES, INC.
    Inventors: Da Ae KIM, Ok Hwa JEON, Min Ho LEE, Song Yeun CHOI, Jong Ha YIM
  • Publication number: 20200010741
    Abstract: One embodiment of the present invention provides an adhesive composition including, on the basis of the total weight thereof, 0.5 to 4.0% by weight of an epoxy compound, 1.0 to 8.0% by weight of an isocyanate compound, 1.7 to 22% by weight of a rubber latex, 1.0 to 8.0% by weight of a polyurethane dispersion (PUD) resin, 0.1 to 2.0% by weight of an amine compound, and 69 to 92% by weight of a solvent, wherein the epoxy compound and the isocyanate compound have a weight ratio of 1:1 to 1:10.
    Type: Application
    Filed: March 21, 2018
    Publication date: January 9, 2020
    Applicant: KOLON INDUSTRIES, INC.
    Inventors: Da Ae KIM, Min Ho LEE, Ok Hwa JEON
  • Patent number: 9757984
    Abstract: The present invention relates to a film for a tire inner liner including a base film layer including a copolymer or a mixture of a polyamide-based resin and a polyether-based resin, and an adhesive layer including a resorcinol-formalin-latex (RFL)-based adhesive, and having low shrinkage rate when elongated at a high temperature and then cooled to room temperature, and a method for manufacturing the same.
    Type: Grant
    Filed: December 30, 2011
    Date of Patent: September 12, 2017
    Assignee: KOLON INDUSTRIES, INC.
    Inventors: So-Yeon Kwon, Young-Han Jeong, Il Chung, Ok-Hwa Jeon
  • Patent number: 9493036
    Abstract: The present invention relates to a film for a tire inner liner, particularly to a film for a tire inner liner including: a base film including a copolymer or a mixture of polyamide-based resin and a polyether-based resin; and an adhesive layer including a resorcinol-formalin-latex (RFL)-based adhesive, wherein the base film has a tensile recovery rate of 30% to 80%. The film for a tire inner liner of the present invention may exhibit an excellent gas barrier property with a thin thickness, and thus enables light weight of a tire and improvement in automobile mileage, and enables easier forming during a tire manufacturing process.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: November 15, 2016
    Assignee: KOLON INDUSTRIES, INC.
    Inventors: Il Chung, Gi-Woong Kim, Sang-Mok Lee, Ok-Hwa Jeon
  • Patent number: 9487048
    Abstract: The present invention relates to a film for a tire inner liner including: a base film layer including polyamide-based resin and a copolymer including a polyamide-based segment and a polyether-based segment; and an adhesive layer including a resorcinol-formalin-latex (RFL)-based adhesive, wherein there is little difference between properties in an MD (machine direction) and a TD (transverse direction), and a method for preparing a film for a tire inner liner, including melting the polyamide-based resin and the copolymer at 230 to 300° C., extruding the molten substance under specific die gap conditions to form a base film, and forming an adhesive layer including a resorcinol-formalin-latex (RFL)-based adhesive on the base film.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: November 8, 2016
    Assignee: KOLON INDUSTRIES, INC.
    Inventors: Ki-Sang Song, Gi-Woong Kim, Sang-Mok Lee, Ok-Hwa Jeon, Il Chung, Si-Min Kim
  • Patent number: 9441073
    Abstract: The present invention relates to a drawn PET fiber that can provide a cap ply cord and the like showing more improved modulus and good dimensional stability, a PET tire cord, and a tire including the same. The drawn PET fiber may be a fiber including 90 mol % or more of PET, of which the crystallinity is 53% or more, the amorphous orientation factor (AOF) is 0.15 or less, and the birefringence index is 0.14 to 0.16, after heat-treating the same at 230° C. for 1 minute under the initial load of 20 g/1000 d.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: September 13, 2016
    Assignee: KOLON INDUSTRIES, INC.
    Inventors: Il Chung, Ok-Hwa Jeon, Gi-Woong Kim
  • Publication number: 20160215905
    Abstract: The present invention relates to a brake hose including a reinforcing member that has more excellent shape stability, durability, high modulus, and a low deterioration in modulus at a high temperature. The brake hose includes: rubber layers; and a reinforcing member formed between the rubber layers or on the rubber layers, in which the reinforcing member may include a polyethylene terephthalate dip cord that is applied with an initial load of 0.01 g/d to be fixed after being subjected to heat treatment for 15 minutes under a tension of 0.01 g/d at 180° C. and has a creep rate equal to or less than 7.0% when being left for 24 hours while being applied with a load of 0.791 g/d at 100° C.
    Type: Application
    Filed: September 24, 2014
    Publication date: July 28, 2016
    Applicant: KOLON INDUSTRIES, INC.
    Inventors: Ok-Hwa JEON, Min-Ho LEE
  • Patent number: 9347154
    Abstract: The present invention relates to a drawn PET fiber which has good dimensional stability, thereby increases the high speed driving performance of a tire, a PET tire cord, their preparation methods, and a tire including the same. The drawn PET fiber may includes 90 mol % or more of PET and may be a fiber of which a creep rate is 5.5% or less when the drawn PET fiber is fixed under the initial load of 0.01 g/d and is kept for 24 hours under the load of 0.791 g/d and the temperature of 100° C. Furthermore, the PET tire cord may be a cord of which a creep rate is 4.0% or less when the PET tire cord is fixed under the initial load of 0.01 g/d and is kept for 24 hours under the load of 0.791 g/d and the temperature of 100° C.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: May 24, 2016
    Assignee: KOLON INDUSTRIES, INC.
    Inventors: Ok-Hwa Jeon, Il Chung, Gi-Woong Kim