Patents by Inventor Hyun Ran CHO

Hyun Ran 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).

  • Publication number: 20210339568
    Abstract: The present invention relates to a tire including an aramid cord in the carcass layer, the tire including a carcass layer including a multi-filament aramid cord. The tire of the present invention can maintain the performance of existing performance of tires for trucks and buses by ameliorating weak fatigue resistance while enhancing the fuel efficiency through weight reduction of the carcass cord.
    Type: Application
    Filed: February 25, 2021
    Publication date: November 4, 2021
    Inventor: Hyun Ran Cho
  • Publication number: 20210162809
    Abstract: The present invention relates to a tire including a fabric strip, and the tire includes a fabric strip in a belt layer, the fabric strip including a plurality of warps arranged in parallel to one another and wefts arranged to weave the warps. The tire according to the invention is advantageous in that the production process is simplified, the production cost required during the production process is lowered, the weight of the tire is reduced, and the fuel efficiency is increased when a car using the tire of the invention is driven, by reducing the resistance to rolling.
    Type: Application
    Filed: November 2, 2020
    Publication date: June 3, 2021
    Inventors: Kil Ju Ko, Mi Jung Lee, Hyun Ran Cho, Hae Kwang Chung
  • Patent number: 10266009
    Abstract: Disclosed are a hybrid cord produced by plying and twisting high modulus yarns and polyamide monofilaments, and a tire including the same. More specifically, disclosed is a method of producing a hybrid cord having a clear core-covering structure including a core comprising a polyamide monofilament and a covering spirally twisted around the core and comprising a high modulus yarn. The hybrid cord can clearly control the modulus ratio in each area, improving production efficiency of the cord and processability of the tire and reducing deviations of uniformity and driving performance. In addition, the tire using the hybrid cord reduces tire deformation during driving, thus satisfying both driving performance and comfort.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: April 23, 2019
    Assignee: HANKOOK TIRE CO., LTD.
    Inventors: Ji Wan Lee, Kil Ju Ko, Sung Tae Kim, Hyun Ran Cho, Il Yong Park
  • Patent number: 10035379
    Abstract: A hybrid cord for a tire, a method of manufacturing the same, and a high-performance environment-friendly radial tire including the same are disclosed herein. The hybrid cord includes a high-modulus fiber ply and a low-modulus fiber ply. The hybrid cord has a stress-strain curve including an initial modulus section, an intermediate modulus section and a final modulus section. The initial modulus of the initial modulus section is higher than the intermediate modulus of the intermediate modulus section, and the final modulus of the final modulus section is higher than the intermediate modulus.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: July 31, 2018
    Assignee: Hankook Tire Co., Ltd.
    Inventors: Ji Wan Lee, Il Yong Park, Kum Kang Hwang, Mi Jung Lee, Sung Tae Kim, Hyun Ran Cho
  • Publication number: 20170210168
    Abstract: Disclosed are a hybrid cord produced by plying and twisting high modulus yarns and polyamide monofilaments, and a tire including the same. More specifically, disclosed is a method of producing a hybrid cord having a clear core-covering structure including a core comprising a polyamide monofilament and a covering spirally twisted around the core and comprising a high modulus yarn. The hybrid cord can clearly control the modulus ratio in each area, improving production efficiency of the cord and processability of the tire and reducing deviations of uniformity and driving performance. In addition, the tire using the hybrid cord reduces tire deformation during driving, thus satisfying both driving performance and comfort.
    Type: Application
    Filed: January 18, 2017
    Publication date: July 27, 2017
    Inventors: Ji Wan Lee, Kil Ju Ko, Sung Tae Kim, Hyun Ran Cho, II Yong Park
  • Publication number: 20160107485
    Abstract: A hybrid cord for a tire, a method of manufacturing the same, and a high-performance environment-friendly radial tire including the same are disclosed herein. The hybrid cord includes a high-modulus fiber ply and a low-modulus fiber ply. The hybrid cord has a stress-strain curve including an initial modulus section, an intermediate modulus section and a final modulus section. The initial modulus of the initial modulus section is higher than the intermediate modulus of the intermediate modulus section, and the final modulus of the final modulus section is higher than the intermediate modulus.
    Type: Application
    Filed: October 15, 2015
    Publication date: April 21, 2016
    Inventors: Ji Wan LEE, Il Yong PARK, Kum Kang HWANG, Mi Jung LEE, Sung Tae KIM, Hyun Ran CHO