Patents by Inventor Seok-Jin Choi

Seok-Jin Choi 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: 20240179932
    Abstract: The present disclosure relates to an organic light emitting diode and an organic light emitting device including the same. The organic light emitting diode includes a first electrode; a second electrode facing the first electrode; and a first blue emitting material layer including a first compound and a second compound and positioned between the first and second electrodes, wherein the first compound is represented by Formula 1, and the second compound is represented by Formula 3. According to an aspect of the present disclosure, it is allowed to provide an OLED and an organic light emitting device having high emitting efficiency and/or improved lifespan.
    Type: Application
    Filed: October 31, 2023
    Publication date: May 30, 2024
    Applicants: LG DISPLAY CO., LTD., LT Materials Co.,Ltd
    Inventors: Ji-Seon JANG, Chi-Ho LEE, Suk-Young BAE, Han-Jin AHN, Jun-Yun KIM, Dae-Hyuk CHOI, Dong-Jun KIM, Yong-Woo KIM, Yong-Geun JUNG, Jin-Hwan SHIN, Seok-Hyeon YU
  • Publication number: 20240164206
    Abstract: The present invention relates to: a pyrene derivative compound having a specific structure; and a high efficiency organic light-emitting device employing the pyrene derivative compound in a light emitting layer and thus having excellent light-emitting characteristics. The organic light-emitting device according to the present invention can be configured as a high efficiency organic light-emitting device having excellent light-emitting characteristics by employing the pyrene derivative compound having the specific structure as a host in the light emitting layer, and thus can be usefully applied industrially in lighting devices, as well as various display devices such as flat, flexible, and wearable displays.
    Type: Application
    Filed: February 15, 2022
    Publication date: May 16, 2024
    Inventors: Se-jin LEE, Si-in KIM, Seok-bae PARK, Hee-dae KIM, Yeong-tae CHOI, Seung-soo LEE, Ji-yung KIM, Kyeong-hyeon KIM, Kyung-tae KIM, Myeong-jun KIM, Tae-gyun LEE, Joon-ho KIM
  • Publication number: 20240155938
    Abstract: An organic light-emitting device according to the present invention uses a pyrene derivative compound having a characteristic structure as a host in a light-emitting layer to realize a long-lifespan and high-efficiency organic light-emitting device having excellent light-emitting characteristics in terms of lifespan and luminescence efficiency. Accordingly, the organic light-emitting device can be usefully applied, in the industrial aspect, for various display devices such as flat panel, flexible, and wearable displays, as well as lighting devices.
    Type: Application
    Filed: February 15, 2022
    Publication date: May 9, 2024
    Inventors: Se-jin LEE, Si-in KIM, Seok-bae PARK, Hee-dae KIM, Yeong-tae CHOI, Seung-soo LEE, Ji-yung KIM, Kyeong-hyeon KIM, Kyung-tae KIM, Myeong-jun KIM, Tae-gyun LEE, Joon-ho KIM
  • Publication number: 20240105963
    Abstract: A method for manufacturing a gas diffusion layer for a fuel cell wherein carbon nanotubes are impregnated into Korean paper, thereby enhancing electroconductivity, and a gas diffusion layer manufactured thereby. The method for manufacturing a gas diffusion layer for a fuel cell which is to manufacture a gas diffusion layer as a constituent member of a unit cell in a fuel cell, includes a support preparation step of preparing a support with Korean paper; a dispersion preparation step of dispersing a carbon substance in a solvent to form a dispersion, a coating step of coating the support with the dispersion, and a thermal treatment step of thermally treating the dispersion-coated support to fix the carbon substance to the support.
    Type: Application
    Filed: March 6, 2023
    Publication date: March 28, 2024
    Inventors: Seung Tak Noh, Ji Han Lee, In Seok Lee, Jae Man Park, Won Jong Choi, Choong Hee Kim, Seong Hwang Kim, Jong Hoon Lee, Soo Jin Park, Seul Yi Lee
  • Patent number: 11942551
    Abstract: A semiconductor device includes a multi-channel active pattern, a plurality of gate structures on the multi-channel active pattern and spaced apart from each other in a first direction, the plurality of gate structures including a gate electrode that extends in a second direction different from the first direction, a source/drain recess between the adjacent gate structures, and a source/drain pattern on the multi-channel active pattern in the source/drain recess, wherein the source/drain pattern includes: a semiconductor liner layer including silicon-germanium and extending along the source/drain recess, a semiconductor filling layer including silicon-germanium on the semiconductor liner layer, and at least one or more semiconductor insertion layers between the semiconductor liner layer and the semiconductor filling layer, and wherein the at least one or more semiconductor insertion layers have a saddle structure.
    Type: Grant
    Filed: November 5, 2021
    Date of Patent: March 26, 2024
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung Taek Kim, Seok Hoon Kim, Pan Kwi Park, Moon Seung Yang, Seo Jin Jeong, Min-Hee Choi, Ryong Ha
  • Publication number: 20240090318
    Abstract: The present invention relates to a novel heterocyclic compound usable in an organic light-emitting device and to an organic light-emitting device comprising same, wherein [chemical formula A] is as described in the detailed description of the invention.
    Type: Application
    Filed: December 28, 2021
    Publication date: March 14, 2024
    Inventors: Se-Jin LEE, Seok-Bae PARK, Si-In KIM, Hee-Dae KIM, Yeong-Tae CHOI, Ji-Yung KIM, Kyung-Tae KIM, Myeong-Jun KIM, Kyeong-hyeon KIM, Seung-soo LEE, Tae Gyun LEE, Joon-Ho KIM
  • Patent number: 9032516
    Abstract: Provided are a system and method for detecting a malicious script. The system includes a script decomposition module for decomposing a web page into scripts, a static analysis module for statically analyzing the decomposed scripts in the form of a document file, a dynamic analysis module for dynamically executing and analyzing the decomposed scripts, and a comparison module for comparing an analysis result of the static analysis module and an analysis result of the dynamic analysis module to determine whether the decomposed scripts are malicious scripts. The system and method can recognize a hidden dangerous hypertext markup language (HTML) tag irrespective of an obfuscation technique for hiding a malicious script in a web page and thus can cope with an unknown obfuscation technique.
    Type: Grant
    Filed: November 11, 2010
    Date of Patent: May 12, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Tae Ghyoon Kim, Young Han Choi, Seok Jin Choi, Cheol Won Lee
  • Patent number: 8906624
    Abstract: Provided are a rotational PCR apparatus, a PCR chip for the same and a rotational PCR method using the same. The disclosed rotational PCR apparatus includes: a PCR chip where PCR is performed; a rotating means connected to the PCR chip and rotating the PCR chip; and a temperature zone forming means spaced apart from the PCR chip, capable of applying thermal energy to the PCR chip and allowing the rotating PCR chip to pass through different temperature zones. The rotational PCR apparatus and method allow performance of PCR with wanted temperature condition and cycles by rotating the chip containing the target substance. Accordingly, a high-efficiency PCR process may be accomplished at low cost. Further, since the target substance can be effectively separated and purified utilizing the centrifugal force resulting from the rotating platform, separation and purification may be achieved economically without requiring additional equipments.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: December 9, 2014
    Assignee: Korea Advanced Institute of Science and Technology (KAIST)
    Inventors: Tae Seok Seo, Jae Hwan Jung, Seok Jin Choi
  • Patent number: 8800037
    Abstract: A system for an engine for forecasting cyber threats and a method enabling the forecast of a low-level cyber threat and the forecast of a high-level cyber threat using the low-level cyber threat in a hierarchical structure of cyber threats are provided. The system includes a forecast information database which stores forecast information including cyber threat forecast items, a forecast schedule related to the items, forecast simulation information, forecast item hierarchical structure information, time series data on cyber threats, and sample data on cyber threats; a forecast engine core subsystem which forecasts the levels of threats for the cyber threat forecast items having a hierarchical structure using the forecast information stored in the forecast information database; and a forecast engine control interface which receives control commands for the forecast engine core subsystem from a user or external system, and delivers the received control commands to the forecast engine core subsystem.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: August 5, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Seung Hyun Paek, In Sung Park, Eun Young Lee, Joo Beom Yun, Ki Wook Sohn, Seok Jin Choi
  • Patent number: 8613865
    Abstract: The present invention relates to a carbon dioxide absorbent, an ionic liquid obtained by reacting amide and an organic acid and a method of using the same. The amidium-based ionic liquid of the present invention has excellent CO2 absorption capability, which is hardly reduced even with repeated use, is easy to synthesize and has low manufacturing cost thus being useful as a CO2 absorbent.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: December 24, 2013
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Seok Jin Choi, Jelliarko Palgunadi, Je Eun Kang, Hoon Sik Kim, Sung Yeup Chung
  • Publication number: 20130012699
    Abstract: The present invention relates to a carbon dioxide absorbent, an ionic liquid obtained by reacting amide and an organic acid and a method of using the same. The amidium-based ionic liquid of the present invention has excellent CO2 absorption capability, which is hardly reduced even with repeated use, is easy to synthesize and has low manufacturing cost thus being useful as a CO2 absorbent.
    Type: Application
    Filed: September 14, 2012
    Publication date: January 10, 2013
    Applicants: Kia Motors Corporation, Hyundai Motor Company
    Inventors: Seok Jin Choi, Jelliarko Palgunadi, Je Eun Kang, Hoon Sik Kim, Sung Yeup Chung
  • Patent number: 8287627
    Abstract: The present invention provides a novel piperazinium trifluoroacetate compound prepared by reacting piperazine with trifluoroacetic acid and a carbon dioxide absorbent prepared by dissolving the compound in an ionic liquid or organic solvent. According to the present invention, the carbon dioxide absorbent has excellent carbon dioxide absorption capacity and low solvent loss, and the energy consumption required for the carbon dioxide absorption and desorption is significantly reduced.
    Type: Grant
    Filed: November 4, 2009
    Date of Patent: October 16, 2012
    Assignee: Hyundai Motor Company
    Inventors: Sung Yeup Chung, Ki Chun Lee, Seok Jin Choi, Hoon Sik Kim, Jelliarko Palgunadi, Je Eun Kang
  • Patent number: 8282710
    Abstract: The present invention relates to a carbon dioxide absorbent, an ionic liquid obtained by reacting amide and an organic acid and a method of using the same. The amidium-based ionic liquid of the present invention has excellent CO2 absorption capability, which is hardly reduced even with repeated use, is easy to synthesize and has low manufacturing cost thus being useful as a CO2 absorbent.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: October 9, 2012
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Seok Jin Choi, Jelliarko Palgunadi, Je Eun Kang, Hoon Sik Kim, Sung Yeup Chung
  • Publication number: 20120096552
    Abstract: A system for an engine for forecasting cyber threats and a method enabling the forecast of a low-level cyber threat and the forecast of a high-level cyber threat using the low-level cyber threat in a hierarchical structure of cyber threats are provided. The system includes a forecast information database which stores forecast information including cyber threat forecast items, a forecast schedule related to the items, forecast simulation information, forecast item hierarchical structure information, time series data on cyber threats, and sample data on cyber threats; a forecast engine core subsystem which forecasts the levels of threats for the cyber threat forecast items having a hierarchical structure using the forecast information stored in the forecast information database; and a forecast engine control interface which receives control commands for the forecast engine core subsystem from a user or external system, and delivers the received control commands to the forecast engine core subsystem.
    Type: Application
    Filed: June 22, 2010
    Publication date: April 19, 2012
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Seung Hyun Paek, In Sung Park, Eun Young Lee, Joo Beom Yun, Ki Wook Sohn, Seok Jin Choi
  • Publication number: 20120022798
    Abstract: The present invention provides a model equation for predicting the impact resistance of an ABS material, which has excellent properties, gloss, and stainability and thus can be widely used in vehicles, electricity and electronics, and miscellaneous applications. The model equation of the present invention provides high accuracy and reproducibility. The prediction technology can be used particularly to determine whether a material complies with the specification of vehicle components, to overcome the quality problems, and to prevent the production of defective products.
    Type: Application
    Filed: November 4, 2010
    Publication date: January 26, 2012
    Applicants: INDUSTRY FOUNDATION OF CHONNAM NATIONAL UNIVERSITY, HYUNDAI MOTOR COMPANY
    Inventors: Ju Hyung Lee, Min Chul Shin, Seok Jin Choi, Chang Kook Hong, Song Yi Bae
  • Publication number: 20110244522
    Abstract: Provided are a rotational PCR apparatus, a PCR chip for the same and a rotational PCR method using the same. The disclosed rotational PCP apparatus includes: a PCR chip where PCR is performed; a rotating means connected to the PCR chip and rotating the PCR chip; and a temperature zone forming means spaced apart from the PCR chip, capable of applying thermal energy to the PCR chip and allowing the rotating PCR chip to pass through different temperature zones. The rotational PCR apparatus and method allow performance of PCR with wanted temperature condition and cycles by rotating the chip containing the target substance. Accordingly, a high-efficiency PCR process may be accomplished at low cost. Further, since the target substance can be effectively separated and purified utilizing the centrifugal force resulting from the rotating platform, separation and purification may be achieved economically without requiring additional equipments.
    Type: Application
    Filed: December 10, 2010
    Publication date: October 6, 2011
    Inventors: TAE SEOK SEO, Jae Hwan Jung, Seok Jin Choi
  • Publication number: 20110239294
    Abstract: Provided are a system and method for detecting a malicious script. The system includes a script decomposition module for decomposing a web page into scripts, a static analysis module for statically analyzing the decomposed scripts in the form of a document file, a dynamic analysis module for dynamically executing and analyzing the decomposed scripts, and a comparison module for comparing an analysis result of the static analysis module and an analysis result of the dynamic analysis module to determine whether the decomposed scripts are malicious scripts. The system and method can recognize a hidden dangerous hypertext markup language (HTML) tag irrespective of an obfuscation technique for hiding a malicious script in a web page and thus can cope with an unknown obfuscation technique.
    Type: Application
    Filed: November 11, 2010
    Publication date: September 29, 2011
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Tae Ghyoon KIM, Young Han CHOI, Seok Jin CHOI, Cheol Won LEE
  • Publication number: 20100326277
    Abstract: The present invention provides a novel piperazinium trifluoroacetate compound prepared by reacting piperazine with trifluoroacetic acid and a carbon dioxide absorbent prepared by dissolving the compound in an ionic liquid or organic solvent. According to the present invention, the carbon dioxide absorbent has excellent carbon dioxide absorption capacity and low solvent loss, and the energy consumption required for the carbon dioxide absorption and desorption is significantly reduced.
    Type: Application
    Filed: November 4, 2009
    Publication date: December 30, 2010
    Applicants: HYUNDAI MOTOR COMPANY
    Inventors: Sung Yeup Chung, Ki Chun Lee, Seok Jin Choi, Hoon Sik Kim, Jelliarko Palgunadi, Je Eun Kang
  • Patent number: D1025167
    Type: Grant
    Filed: April 28, 2023
    Date of Patent: April 30, 2024
    Inventors: Han Wool Choi, Jun Hwan Park, Seok Young Youn, Hun Keon Ko, Ho Seong Kang, Hyeon Jeong An, Gyu Jong Hwang, Soo Kyoung Kang, Dong Jin Hyun, Geun Sang Yu
  • Patent number: D1025168
    Type: Grant
    Filed: April 28, 2023
    Date of Patent: April 30, 2024
    Inventors: Han Wool Choi, Jun Hwan Park, Seok Young Youn, Hun Keon Ko, Ho Seong Kang, Hyeon Jeong An, Gyu Jong Hwang, Soo Kyoung Kang, Dong Jin Hyun, Geun Sang Yu