Patents by Inventor Ji Wan LEE

Ji Wan LEE 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: 11963445
    Abstract: Provided are a compound capable of improving the light-emitting efficiency, stability, and lifespan of an element; an organic electronic element using same; and an electronic device thereof.
    Type: Grant
    Filed: August 9, 2023
    Date of Patent: April 16, 2024
    Assignee: DUK SAN NEOLUX CO., LTD.
    Inventors: Ji Hyun Park, Se Hoon Lee, Jae Wan Jang, Hyung Dong Lee, Yun Suk Lee
  • Publication number: 20240119907
    Abstract: A display device includes a substrate, a first active pattern, a first gate electrode, a second active pattern, a second gate electrode, a first connecting pattern, and a second connecting pattern. The first connecting pattern is disposed on the second active pattern and is electrically connected to the first gate electrode, and the second connecting pattern is disposed on the first connecting pattern and is electrically connected to the first connecting pattern and the second active pattern.
    Type: Application
    Filed: December 15, 2023
    Publication date: April 11, 2024
    Inventors: Ji Seon LEE, Jin Sung AN, Seok Je SEONG, Seong Jun LEE, Se Wan SON
  • Publication number: 20240107840
    Abstract: A display device includes a first semiconductor layer disposed on a substrate; a first insulating layer disposed on the first semiconductor layer; a scan line disposed on the first insulating layer; a second insulating layer on the scan line; an inverted scan line on the second insulating layer; a third insulating layer disposed on the inverted scan line; a second semiconductor layer disposed on the third insulating layer; a fourth insulating layer disposed on the second semiconductor layer; an initializing voltage line disposed on the fourth insulating layer and overlapping the scan line; a first transistor including a channel disposed in the first semiconductor layer and receiving a gate signal through the scan line; and a second transistor including a channel disposed in the second semiconductor layer and receiving a gate signal through the inverted scan line.
    Type: Application
    Filed: December 1, 2023
    Publication date: March 28, 2024
    Applicant: Samsung Display Co., LTD.
    Inventors: Se Wan SON, Moo Soon KO, Kyung Hyun BAEK, Seok Je SEONG, Jae Hyun LEE, Jeong-Soo LEE, Ji Seon LEE, Yoon-Jong CHO
  • Patent number: 11939308
    Abstract: The present disclosure provides a novel biphenyl derivative compound or a pharmaceutically acceptable salt thereof. The biphenyl derivative compound or pharmaceutically acceptable salt thereof according to the present disclosure is a compound that increases Nm23-H1/NDPK activity and can inhibit cancer metastasis and growth. Thus, it exhibits excellent effects not only on the prevention, alleviation and treatment of cancer, but also on the suppression of cancer metastasis.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: March 26, 2024
    Assignee: EWHA University—Industry Collaboration Foundation
    Inventors: Kong Joo Lee, Hee-Yoon Lee, Je Jin Lee, Hwang Suk Kim, Ji-Wan Seo, Hongsoo Lee, Ji Soo Shin, Bo-kyung Kim
  • Publication number: 20240085786
    Abstract: The present invention relates to a naphthalimide sulfonate derivative, and a photoacid generator and a photoresist composition each comprising same and, more specifically, to a naphthalimide sulfonate derivative compound, and a photoacid generator and a photoresist composition each comprising same, wherein the compound has excellent absorbance for light of i-line (365 nm) wavelength, is greatly easy to prepare into a polymerizable composition due to very high solubility in an organic solvent, has good thermal stability, and shows a favorable acid generation rate.
    Type: Application
    Filed: December 28, 2021
    Publication date: March 14, 2024
    Applicant: SAMYANG CORPORATION
    Inventors: Chun Rim OH, Dae Hyuk CHOI, Yu Na CHOI, Deuk Rak LEE, Ji Eun CHOI, Ki Tae KANG, Min Jung KIM, Won Jung LEE, Chi Wan LEE
  • Patent number: 11214095
    Abstract: Provided are a sheet, a method of its preparation, and a tire comprising the sheet, wherein the sheet comprises tire cords, a topping rubber for topping the tire cords, and a conductive fiber located on the surface of the topping rubber. The sheet can provide tires, on which a rubber composition with a low electricity-transmitting property and low rolling resistance is applied, with excellent conductivity.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: January 4, 2022
    Inventors: Ji Wan Lee, Mi Jung Lee, Sung Tae Kim, Kil Ju Ko, Il Yong Park, Su Hong Sung
  • Publication number: 20210086568
    Abstract: A non-pneumatic tire includes a rim part in which an insertion groove is formed and being connected with an axle; a tread part formed in a shape of surrounding an outer side of the tire in a circumferential direction thereof and being in contact with the ground; a spoke part formed between the rim part and the tread part and provided with upper arch bodies and lower arch bodies of an arch shape to absorb impacts transmitted from the ground to the tread part; a structural reinforcement part inserted into the inside of the tread part to perform load support and stress distribution of the spoke part; a conductive structure part formed between an outer surface of the rim part and an inner surface of the tread part, and having fiber plated using a metal salt.
    Type: Application
    Filed: September 23, 2020
    Publication date: March 25, 2021
    Inventors: Sung Tae KIM, Seok Ju CHOI, Ji Wan LEE, Jeong Heon KIM
  • Publication number: 20210053400
    Abstract: A tire including a sealant layer and a sound absorbing material layer is provided, and more particularly, a tire is provided, which includes a sound absorbing material layer which is attached to an inner surface of a tire, and a sealant layer which is disposed between the inner surface of the tire and the sound absorbing material layer and includes a sealant which attaches the sound absorbing material layer to the inner surface of the tire. The sound absorbing material layer includes a non-woven fabric.
    Type: Application
    Filed: August 12, 2020
    Publication date: February 25, 2021
    Inventors: Ji Wan LEE, Seok Hee JO, Byeong Ho SEO, In Jeong PARK, Nam Seok KIM, Hae Kwang CHUNG, Jeong Heon KIM, Hyun Ah BAE
  • Publication number: 20190193465
    Abstract: Provided are a sheet, a method of its preparation, and a tire comprising the sheet, wherein the sheet comprises tire cords, a topping rubber for topping the tire cords, and a conductive fiber located on the surface of the topping rubber. The sheet can provide tires, on which a rubber composition with a low electricity-transmitting property and low rolling resistance is applied, with excellent conductivity.
    Type: Application
    Filed: November 27, 2018
    Publication date: June 27, 2019
    Inventors: Ji Wan LEE, Mi Jung LEE, Sung Tae KIM, Kil Ju KO, Il Yong PARK, Su Hong SUNG
  • 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
  • Patent number: 9610806
    Abstract: Disclosed is a tire-reinforcing steel cord for a radial tire. The tire-reinforcing steel cord has a double layer structure including a first-layer core and a second-layer core provided on the surface of the first-layer core. The first-layer core has an elliptical or rectangular cross section. The tire-reinforcing steel cord can improve processability, fatigue characteristics, and rolling resistance performance of a tire, resulting in improved fuel efficiency. A radial tire using the tire-reinforcing steel cord is also disclosed.
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: April 4, 2017
    Assignee: Hankook Tire Co., Ltd.
    Inventors: Kwan Woo Jung, Il Yong Park, Kum Kang Hwang, Ill Soon Jang, Ji Wan Lee, Mi Jung Lee
  • 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
  • Publication number: 20150068655
    Abstract: Disclosed is a tire-reinforcing steel cord for a radial tire. The tire-reinforcing steel cord has a double layer structure including a first-layer core and a second-layer core provided on the surface of the first-layer core. The first-layer core has an elliptical or rectangular cross section. The tire-reinforcing steel cord can improve processability, fatigue characteristics, and rolling resistance performance of a tire, resulting in improved fuel efficiency. A radial tire using the tire-reinforcing steel cord is also disclosed.
    Type: Application
    Filed: April 9, 2014
    Publication date: March 12, 2015
    Applicant: HANKOOK TIRE CO., LTD.
    Inventors: Kwan Woo JUNG, Il Yong PARK, Kum Kang HWANG, Ill Soon JANG, Ji Wan LEE, Mi Jung LEE