Patents by Inventor Hong-Kyu Park

Hong-Kyu Park 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: 20250234165
    Abstract: Disclosed are a message service provision method for providing a message service via an open chat room corresponding to link information, and a message server and a terminal for executing the message service provision method. The message service provision method comprises the steps of: transmitting, to a message server, a request for issuing link information for an open chat room via a message application; receiving, from the message server, link information generated in response to the request for issuing link information; sharing the link information according to a request for sharing inputted by a user of a host terminal; and performing chatting with a user of a guest terminal participating in the open chat room by means of the shared link information; wherein the user of the guest terminal and the user of the host terminal are users who subscribed to a message service provided via the message server.
    Type: Application
    Filed: March 31, 2025
    Publication date: July 17, 2025
    Inventors: Ji Sun LEE, Mun Heon KIM, Soo Hee KIM, Hong Kyu PARK, Sang Won MOON, Ki Yong SHIM, Hye Jung IM
  • Patent number: 12327869
    Abstract: A method of preparing a positive electrode active material precursor includes forming positive electrode active material precursor particles while adding a reaction solution including a transition metal-containing solution, an ammonium ion-containing solution, and a basic aqueous solution to a reactor with a filtration device installed therein. The method further includes performing continuous concentration in which the reaction solution is added while continuously discharging a portion of the reaction solution in the reactor out of the reactor using the filtration device when the reactor is full, wherein a concentration of a solid content in the reactor is increased at a constant rate.
    Type: Grant
    Filed: March 28, 2024
    Date of Patent: June 10, 2025
    Assignee: LG Chem, Ltd.
    Inventors: Seong Bae Kim, Yi Rang Lim, Kyoung Wan Park, Hyun Uk Kim, Hong Kyu Park, Chang Jun Moon, Eun Hee Kim
  • Patent number: 12315920
    Abstract: A positive electrode active material for a lithium secondary battery includes a lithium composite transition metal oxide including transition metals including nickel (Ni), cobalt (Co), and manganese (Mn), and the lithium composite transition metal oxide is doped with doping elements including cobalt (Co) and titanium (Ti). The lithium composite transition metal oxide includes at least one lithium layer and at least one transition metal layer including the transition metals, and the lithium layer and the transition metal layer are alternately arranged. The thickness of the lithium layer ranges from 2.146 ? to 2.182 ?, and the thickness of the transition metal layer ranges from 2.561 ? to 2.595 ?.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: May 27, 2025
    Assignee: LG Chem, Ltd.
    Inventors: Won Tae Kim, Jong Yeol Yu, Seoung Chul Ha, Sun Sik Shin, Hong Kyu Park, Seong Hoon Kang
  • Patent number: 12284575
    Abstract: Disclosed are a message service provision method for providing a message service via an open chat room corresponding to link information, and a message server and a terminal for executing the message service provision method. The message service provision method comprises the steps of: transmitting, to a message server, a request for issuing link information for an open chat room via a message application; receiving, from the message server, link information generated in response to the request for issuing link information; sharing the link information according to a request for sharing inputted by a user of a host terminal; and performing chatting with a user of a guest terminal participating in the open chat room by means of the shared link information; wherein the user of the guest terminal and the user of the host terminal are users who subscribed to a message service provided via the message server.
    Type: Grant
    Filed: September 7, 2023
    Date of Patent: April 22, 2025
    Assignee: KAKAO CORP.
    Inventors: Ji Sun Lee, Mun Heon Kim, Soo Hee Kim, Hong Kyu Park, Sang Won Moon, Ki Yong Shim, Hye Jung Im
  • Patent number: 12132199
    Abstract: A positive electrode active material includes a core including a first lithium complex metal oxide, and a shell located surrounding the core and including a second lithium complex metal oxide, and further includes a buffer layer located between the core and the shell. The buffer layer includes a pore, and a three-dimensional network structure of a third lithium complex metal oxide which is connecting the core and the shell. Accordingly, the positive electrode active material is capable of enhancing an output property and a life property by minimizing destruction of the active material caused by a rolling process during the electrode preparation, maximizing reactivity with an electrolyte liquid, and by the particles that form the shell having a crystal structure with orientation facilitating lithium ion intercalation and deintercalation.
    Type: Grant
    Filed: June 8, 2023
    Date of Patent: October 29, 2024
    Assignee: LG Energy Solution, Ltd.
    Inventors: Byung Chun Park, Hong Kyu Park, Wang Mo Jung, Seong Hoon Kang
  • Patent number: 12074307
    Abstract: A method of preparing a positive electrode active material for a lithium secondary battery includes mixing a transition metal hydroxide containing transition metals including nickel (Ni), cobalt (Co) and manganese (Mn), a lithium-containing raw material and a doping raw material including at least one doping element selected from the group consisting of Al, Mg, Co, V, Ti, Zr and W and performing a first calcination treatment thereon to prepare a lithium composite transition metal oxide doped with the doping element; and mixing the lithium composite transition metal oxide and a coating raw material including at least one coating element selected from the group consisting of Al, Mg, Co, Ti, Zr and B and performing a second calcination treatment thereon to prepare a positive electrode active material in which a coating layer containing the coating element is formed on the lithium composite transition metal oxide.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: August 27, 2024
    Assignee: LG Chem, Ltd.
    Inventors: Sang Min Park, Hwa Seok Chae, Sin Young Park, Hong Kyu Park, Seong Hoon Kang
  • Publication number: 20240243279
    Abstract: The present invention provides a positive electrode active material precursor having a uniform particle size distribution and a method of preparing the same, and, specifically, provides a positive electrode active material precursor represented by Formula 1, wherein a percentage of fine powder with an average particle diameter (D50) of 1 ?m or less generated when the positive electrode active material precursor is rolled at 2.5 kgf/cm2 is less than 1%, and an aspect ratio is 0.93 or more, and a method of preparing the positive electrode active material precursor. [NixCOyM1zM2w](OH)2??[Formula 1] In Formula 1, 0.55?x<1, 0<y?0.5, 0<z?0.5, and 0?w?0.1, M1 includes at least one selected from the group consisting of Mn and Al, and M2 includes at least one selected from the group consisting of Zr, B, W, Mo, Cr, Nb, Mg, Hf, Ta, La, Ti, Sr, Ba, Ce, F, P, S, and Y.
    Type: Application
    Filed: March 28, 2024
    Publication date: July 18, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Seong Bae Kim, Yi Rang Lim, Kyoung Wan Park, Hyun Uk Kim, Hong Kyu Park, Chang Jun Moon, Eun Hee Kim
  • Patent number: 11973209
    Abstract: A positive electrode active material for a secondary battery includes a lithium composite transition metal oxide including nickel (Ni), cobalt (Co), and manganese (Mn), wherein the lithium composite transition metal oxide has a layered crystal structure of space group R3m, includes the nickel (Ni) in an amount of 60 mol % or less based on a total amount of transition metals, includes the cobalt (Co) in an amount greater than an amount of the manganese (Mn), and is composed of single particles.
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: April 30, 2024
    Assignee: LG Chem, Ltd.
    Inventors: Eun Hee Lee, Seong Bae Kim, Young Su Park, Yi Rang Lim, Hong Kyu Park, Song Yi Yang, Byung Hyun Hwang, Woo Hyun Kim
  • Patent number: 11973222
    Abstract: A positive electrode active material precursor having a uniform particle size distribution and represented by Formula 1, wherein a percentage of fine powder with an average particle diameter (D50) of 1 ?m or less is generated when the positive electrode active material precursor is rolled at 2.5 kgf/cm2 is less than 1%, and an aspect ratio is 0.93 or more, and a method of preparing the positive electrode active material precursor [NixCoyM1zM2w](OH)2 ??[Formula 1] in Formula 1, 0.5?x<1, 0<y?0.5, 0<z?0.5, and 0?w?0.1, M1 includes at least one selected from the group consisting of Mn and Al, and M2 includes at least one selected from the group consisting of Zr, B, W, Mo, Cr, Nb, Mg, Hf, Ta, La, Ti, Sr, Ba, Ce, F, P, S, and Y. A method of preparing the positive electrode active material precursor is also provided.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: April 30, 2024
    Assignee: LG Chem, Ltd.
    Inventors: Seong Bae Kim, Yi Rang Lim, Kyoung Wan Park, Hyun Uk Kim, Hong Kyu Park, Chang Jun Moon, Eun Hee Kim
  • Publication number: 20240063380
    Abstract: A method of preparing a positive electrode active material includes mixing a positive electrode active material precursor with a lithium raw material and performing a primary heat treatment, and performing a secondary heat treatment at a temperature lower than that of the primary heat treatment to prepare a positive electrode active material. The primary heat treatment and the secondary heat treatment are respectively performed in an oxygen atmosphere. The secondary heat treatment is performed in the oxygen atmosphere with an oxygen concentration of 50% or more.
    Type: Application
    Filed: October 31, 2023
    Publication date: February 22, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Wook Jang, Hong Kyu Park, Hyo Joung Nam, Seong Bae Kim, Dong Jin Kim
  • Publication number: 20240038987
    Abstract: A positive electrode active material for a secondary battery including: a lithium complex transition metal oxide which contains nickel (Ni) and cobalt (Co), and contains at least one selected from the group consisting of manganese (Mn) and aluminum (Al); and a composite coating portion which is formed on a surface of the lithium complex transition metal oxide is provided. The lithium complex transition metal oxide has a nickel (Ni) content of 65 mol % or more with respect to the total transition metal content, and the composite coating portion contains cobalt (Co) and boron (B), and contains at least one selected from the group consisting of lanthanum (La), titanium (Ti), and aluminum (Al).
    Type: Application
    Filed: October 6, 2023
    Publication date: February 1, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Won Tae Kim, Jong Yeol Yu, Hong Kyu Park, Sun Sik Shin, Seong Hoon Kang
  • Publication number: 20230422002
    Abstract: Disclosed are a message service provision method for providing a message service via an open chat room corresponding to link information, and a message server and a terminal for executing the message service provision method. The message service provision method comprises the steps of: transmitting, to a message server, a request for issuing link information for an open chat room via a message application; receiving, from the message server, link information generated in response to the request for issuing link information; sharing the link information according to a request for sharing inputted by a user of a host terminal; and performing chatting with a user of a guest terminal participating in the open chat room by means of the shared link information; wherein the user of the guest terminal and the user of the host terminal are users who subscribed to a message service provided via the message server.
    Type: Application
    Filed: September 7, 2023
    Publication date: December 28, 2023
    Inventors: Ji Sun LEE, Mun Heon KIM, Soo Hee KIM, Hong Kyu PARK, Sang Won MOON, Ki Yong SHIM, Hye Jung IM
  • Patent number: 11831014
    Abstract: A positive electrode active material for a secondary battery including: a lithium complex transition metal oxide which contains nickel (Ni) and cobalt (Co), and contains at least one selected from the group consisting of manganese (Mn) and aluminum (Al); and a composite coating portion which is formed on a surface of the lithium complex transition metal oxide is provided. The lithium complex transition metal oxide has a nickel (Ni) content of 65 mol % or more with respect to the total transition metal content, and the composite coating portion contains cobalt (Co) and boron (B), and contains at least one selected from the group consisting of lanthanum (La), titanium (Ti), and aluminum (Al).
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: November 28, 2023
    Inventors: Won Tae Kim, Jong Yeol Yu, Hong Kyu Park, Sun Sik Shin, Seong Hoon Kang
  • Publication number: 20230317930
    Abstract: A positive electrode active material includes a core including a first lithium complex metal oxide, and a shell located surrounding the core and including a second lithium complex metal oxide, and further includes a buffer layer located between the core and the shell. The buffer layer includes a pore, and a three-dimensional network structure of a third lithium complex metal oxide which is connecting the core and the shell. Accordingly, the positive electrode active material is capable of enhancing an output property and a life property by minimizing destruction of the active material caused by a rolling process during the electrode preparation, maximizing reactivity with an electrolyte liquid, and by the particles that form the shell having a crystal structure with orientation facilitating lithium ion intercalation and deintercalation.
    Type: Application
    Filed: June 8, 2023
    Publication date: October 5, 2023
    Applicant: LG Chem, Ltd.
    Inventors: Byung Chun Park, Hong Kyu Park, Wang Mo Jung, Seong Hoon Kang
  • Patent number: 11778429
    Abstract: Disclosed are a message service provision method for providing a message service via an open chat room corresponding to link information, and a message server and a terminal for executing the message service provision method. The message service provision method comprises the steps of: transmitting, to a message server, a request for issuing link information for an open chat room via a message application; receiving, from the message server, link information generated in response to the request for issuing link information; sharing the link information according to a request for sharing inputted by a user of a host terminal; and performing chatting with a user of a guest terminal participating in the open chat room by means of the shared link information; wherein the user of the guest terminal and the user of the host terminal are users who subscribed to a message service provided via the message server.
    Type: Grant
    Filed: November 15, 2021
    Date of Patent: October 3, 2023
    Assignee: KAKAO CORP.
    Inventors: Ji Sun Lee, Mun Heon Kim, Soo Hee Kim, Hong Kyu Park, Sang Won Moon, Ki Yong Shim, Hye Jung Im
  • Patent number: 11735721
    Abstract: The present invention relates to a positive electrode active material for a lithium secondary battery, a method for preparing the same and a lithium secondary battery including the same, the positive electrode active material includes a core including a first lithium complex metal oxide, and a shell located surrounding the core and including a second lithium complex metal oxide, and further includes a buffer layer located between the core and the shell, wherein the buffer layer includes a pore, and a three-dimensional network structure of a third lithium complex metal oxide which is connecting the core and the shell, and accordingly, minimizing destruction of the active material caused by a rolling process during the electrode preparation, and maximizing reactivity with an electrolyte liquid.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: August 22, 2023
    Inventors: Byung Chun Park, Hong Kyu Park, Wang Mo Jung, Seong Hoon Kang
  • Patent number: 11717997
    Abstract: Disclosed are a scratch-proof TPU (thermoplastic polyurethane) cutting board having increased wear resistance and no toxicity and a method of manufacturing the same, the method according to a preferred embodiment including (1) weighing 72 wt % of TPU, 25 wt % of magnesium sulfate, and 3 wt % of a dispersant, (2) placing the materials weighed in step (1) in a mixing tank and performing mixing with stirring for 40 min, (3) placing the mixed materials in a dryer and performing drying at 80° C. for 3 hr, and (4) placing the dried materials in an injection-molding machine and performing injection molding, whereby the molecular cohesion of TPU and magnesium sulfate is enhanced, whereby the final TPU cutting board has greatly increased wear resistance and friction resistance and is non-toxic, and surface scratches do not occur due to a cutting process when using the cutting board, thereby preventing discoloration of the surface of the cutting board.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: August 8, 2023
    Assignee: JINHAN INDUSTRY CO. LTD
    Inventor: Hong Kyu Park
  • Patent number: 11362332
    Abstract: A method of preparing a positive electrode active material includes mixing a lithium raw material and a nickel-containing transition metal hydroxide precursor containing nickel in an amount of 65 mol % or more based on a total number of moles of transition metals and performing a first heat treatment to prepare a nickel-containing lithium transition metal oxide. The method also includes mixing a boron and carbon-containing raw material and a cobalt-containing raw material with the nickel-containing lithium transition metal oxide to form a mixture, and performing a second heat treatment on the mixture to form a coating material including B and Co on a surface of the lithium transition metal oxide. A positive electrode active material prepared by the preparation method is formed, and a positive electrode for a lithium secondary battery and a lithium secondary battery which include the positive electrode active material.
    Type: Grant
    Filed: October 11, 2018
    Date of Patent: June 14, 2022
    Inventors: Won Tae Kim, Sun Sik Shin, Yeo June Yoon, Hong Kyu Park, Seong Hoon Kang, Jong Yeol Yu
  • Publication number: 20220078587
    Abstract: Disclosed are a message service provision method for providing a message service via an open chat room corresponding to link information, and a message server and a terminal for executing the message service provision method. The message service provision method comprises the steps of: transmitting, to a message server, a request for issuing link information for an open chat room via a message application; receiving, from the message server, link information generated in response to the request for issuing link information; sharing the link information according to a request for sharing inputted by a user of a host terminal; and performing chatting with a user of a guest terminal participating in the open chat room by means of the shared link information; wherein the user of the guest terminal and the user of the host terminal are users who subscribed to a message service provided via the message server.
    Type: Application
    Filed: November 15, 2021
    Publication date: March 10, 2022
    Inventors: Ji Sun LEE, Mun Heon KIM, Soo Hee KIM, Hong Kyu PARK, Sang Won MOON, Ki Yong SHIM, Hye Jung IM
  • Patent number: 11178519
    Abstract: Disclosed are a message service provision method for providing a message service via an open chat room corresponding to link information, and a message server and a terminal for executing the message service provision method. The message service provision method comprises the steps of: transmitting, to a message server, a request for issuing link information for an open chat room via a message application; receiving, from the message server, link information generated in response to the request for issuing link information; sharing the link information according to a request for sharing inputted by a user of a host terminal; and performing chatting with a user of a guest terminal participating in the open chat room by means of the shared link information; wherein the user of the guest terminal and the user of the host terminal are users who subscribed to a message service provided via the message server.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: November 16, 2021
    Assignee: KAKAO CORP.
    Inventors: Ji Sun Lee, Mun Heon Kim, Soo Hee Kim, Hong Kyu Park, Sang Won Moon, Ki Yong Shim, Hye Jung Im