Patents by Inventor Du Yeol KIM

Du Yeol KIM 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: 12087946
    Abstract: The present invention relates to a positive electrode active material which makes it possible to improve the electrochemical properties and stability of a positive electrode active material including a lithium composite oxide by adjusting the direction of a concentration gradient of a metal element of the lithium composite oxide, and a lithium secondary battery using a positive electrode including the positive electrode active material.
    Type: Grant
    Filed: July 22, 2021
    Date of Patent: September 10, 2024
    Assignee: ECOPRO BM CO., LTD.
    Inventors: Gwang Seok Choi, Moon Ho Choi, Jun Won Suh, Jin Kyeong Yun, Jung Han Lee, Seung Woo Choi, Joong Ho Bae, Du Yeol Kim
  • Publication number: 20240038988
    Abstract: The present invention relates to a positive electrode active material having improved electrical characteristics by adjusting an aspect ratio gradient of primary particles included in a secondary particle. a positive electrode including the positive electrode active material, and a lithium secondary battery using the positive electrode.
    Type: Application
    Filed: October 16, 2023
    Publication date: February 1, 2024
    Applicant: ECOPRO BM CO., LTD.
    Inventors: Moon Ho CHOI, Seung Woo CHOI, Jun Won SUH, Jin Kyeong YUN, Jung Han LEE, Gwang Seok CHOE, Joong Ho BAE, Du Yeol KIM
  • Patent number: 11837725
    Abstract: The present invention relates to a positive electrode active material having improved electrical characteristics by adjusting an aspect ratio gradient of primary particles included in a secondary particle, a positive electrode including the positive electrode active material, and a lithium secondary battery using the positive electrode.
    Type: Grant
    Filed: January 6, 2023
    Date of Patent: December 5, 2023
    Assignee: ECOPRO BM CO., LTD.
    Inventors: Moon Ho Choi, Seung Woo Choi, Jun Won Suh, Jin Kyeong Yun, Jung Han Lee, Gwang Seok Choe, Joong Ho Bae, Du Yeol Kim
  • Publication number: 20230139863
    Abstract: The present invention relates to a positive electrode active material and a lithium secondary battery comprising the same, and more specifically, to a positive electrode active material including a lithium composite oxide containing at least nickel and titanium, wherein the titanium is present in an oxide form in at least a portion of the surface of the lithium composite oxide at the same time as being doped in the lithium composite oxide, and thus it is possible to simultaneously improve the output efficiency and high-temperature lifetime characteristics (high-temperature cycle capacity retention rate) of a lithium secondary battery using the positive electrode active material, and a lithium secondary battery including the same.
    Type: Application
    Filed: October 12, 2022
    Publication date: May 4, 2023
    Applicant: ECOPRO BM CO., LTD.
    Inventors: Joong Ho BAE, Du Yeol KIM, Moon Ho CHOI, Jun Won SUH, Sun Kyu KIM, Jung Han LEE, Seung Woo CHOI
  • Patent number: 11588154
    Abstract: The present invention relates to a positive electrode active material having improved electrical characteristics by adjusting an aspect ratio gradient of primary particles included in a secondary particle, a positive electrode including the positive electrode active material, and a lithium secondary battery using the positive electrode.
    Type: Grant
    Filed: November 11, 2020
    Date of Patent: February 21, 2023
    Assignee: ECOPRO BM CO., LTD.
    Inventors: Moon Ho Choi, Seung Woo Choi, Jun Won Suh, Jin Kyeong Yun, Jung Han Lee, Gwang Seok Choe, Joong Ho Bae, Du Yeol Kim
  • Publication number: 20220131143
    Abstract: The present invention relates to a positive electrode active material which makes it possible to improve the electrochemical properties and stability of a positive electrode active material including a lithium composite oxide by adjusting the direction of a concentration gradient of a metal element of the lithium composite oxide, and a lithium secondary battery using a positive electrode including the positive electrode active material.
    Type: Application
    Filed: July 22, 2021
    Publication date: April 28, 2022
    Applicant: ECOPRO BM CO., LTD.
    Inventors: Gwang Seok CHOI, Moon Ho CHOI, Jun Won SUH, Jin Kyeong YUN, Jung Han LEE, Seung Woo CHOI, Joong Ho BAE, Du Yeol KIM
  • Publication number: 20210399297
    Abstract: The present invention relates to a positive electrode active material and a lithium secondary battery including the same, and more particularly, to a bimodal-type positive electrode active material that includes a first lithium composite oxide which is a small particle and a second lithium composite oxide which is a large particle, which have different average particle diameters, thereby improving an increasing deviation of an average particle diameter and degraded impedance and lifetime characteristics due to excessive calcination for any one of the small and large particles during simultaneous calcination, a positive electrode including the same, and a lithium secondary battery using the same.
    Type: Application
    Filed: April 7, 2021
    Publication date: December 23, 2021
    Applicant: ECOPRO BM CO., LTD.
    Inventors: Moon Ho CHOI, Gwang Seok CHOE, Jun Won SUH, Jin Kyeong YUN, Jung Han LEE, Seung Woo CHOI, Joong Ho BAE, Du yeol KIM
  • Publication number: 20210167380
    Abstract: The present invention relates to a positive electrode active material having improved electrical characteristics by adjusting an aspect ratio gradient of primary particles included in a secondary particle, a positive electrode including the positive electrode active material, and a lithium secondary battery using the positive electrode.
    Type: Application
    Filed: November 11, 2020
    Publication date: June 3, 2021
    Applicant: ECOPRO BM CO., LTD.
    Inventors: Moon Ho CHOI, Seung Woo CHOI, Jun Won SUH, Jin Kyeong YUN, Jung Han LEE, Gwang Seok CHOE, Joong Ho BAE, Du Yeol KIM
  • Publication number: 20180195946
    Abstract: A dust sensor apparatus having flow rate control function for securing reliability of measurement of the dust sensor by constantly maintaining flow rate of the air flowing into the dust sensor for measuring concentration of dust in the internal of a vehicle, may include a blow motor configured for controlling flow rate of the air to be packaged in the dust sensor for measuring concentration of dust in the internal of a vehicle such that flow rate of the air flowing into the dust sensor is maintained constantly.
    Type: Application
    Filed: December 14, 2017
    Publication date: July 12, 2018
    Applicants: Hyundai Motor Company, Kia Motors Corporation, HANON SYSTEMS, DOOWON CLIMATE CONTROL CO., LTD., ONEGENE ELECTRONICS, TRUWIN
    Inventors: Dong Ho KWON, Gee Young SHIN, Myung Hoe KIM, Dong Won YEON, Moo Yong KIM, Chae Geun LIM, Sang Ho OH, Joong Heum JUNG, Hyun Hoo JANG, Young Oh KIM, Do Yeop KANG, Jin Young LEE, Jung Keun PARK, Du Yeol KIM
  • Patent number: 9970856
    Abstract: A vehicular dust sensor may include a case having an inner space, a light source module disposed in the inner space of the case, and irradiating an air passage with light, the air passage being provided in the light source module for introduction and pass of air and dust, a condensing lens to collect light, emitted from the light source module and scattered by dust in air in the air passage, a light receiving module receiving the scattered light collected by the condensing lens to output an electric signal corresponding to a dust concentration, and an inner housing disposed in the inner space of the case to form the air passage.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: May 15, 2018
    Assignees: Hyundai Motor Company, TRUWIN, Hanon Systems
    Inventors: Dong Ho Kwon, Gee Young Shin, Kwang Woon Cho, Jun Ho Choi, Sang Ho Oh, Chae Geun Lim, Ji Min Lee, Du Yeol Kim, Young Hu Lee
  • Publication number: 20170276592
    Abstract: A vehicular dust sensor may include a case having an inner space, a light source module disposed in the inner space of the case, and irradiating an air passage with light, the air passage being provided in the light source module for introduction and pass of air and dust, a condensing lens to collect light, emitted from the light source module and scattered by dust in air in the air passage, a light receiving module receiving the scattered light collected by the condensing lens to output an electric signal corresponding to a dust concentration, and an inner housing disposed in the inner space of the case to form the air passage.
    Type: Application
    Filed: October 12, 2016
    Publication date: September 28, 2017
    Applicants: Hyundai Motor Company, Truwin, Hanon Systems
    Inventors: Dong Ho KWON, Gee Young SHIN, Kwang Woon CHO, Jun Ho CHOI, Sang Ho OH, Chae Geun LIM, Ji Min LEE, Du Yeol KIM, Young Hu LEE