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).
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Publication number: 20240179932Abstract: 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: ApplicationFiled: October 31, 2023Publication date: May 30, 2024Applicants: LG DISPLAY CO., LTD., LT Materials Co.,LtdInventors: 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
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Publication number: 20240164206Abstract: 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: ApplicationFiled: February 15, 2022Publication date: May 16, 2024Inventors: 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
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Publication number: 20240155938Abstract: 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: ApplicationFiled: February 15, 2022Publication date: May 9, 2024Inventors: 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
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Publication number: 20240105963Abstract: 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: ApplicationFiled: March 6, 2023Publication date: March 28, 2024Inventors: 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
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Patent number: 11942551Abstract: 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: GrantFiled: November 5, 2021Date of Patent: March 26, 2024Assignee: 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
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Publication number: 20240090318Abstract: 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: ApplicationFiled: December 28, 2021Publication date: March 14, 2024Inventors: 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
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Patent number: 9032516Abstract: 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: GrantFiled: November 11, 2010Date of Patent: May 12, 2015Assignee: Electronics and Telecommunications Research InstituteInventors: Tae Ghyoon Kim, Young Han Choi, Seok Jin Choi, Cheol Won Lee
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Patent number: 8906624Abstract: 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: GrantFiled: December 10, 2010Date of Patent: December 9, 2014Assignee: Korea Advanced Institute of Science and Technology (KAIST)Inventors: Tae Seok Seo, Jae Hwan Jung, Seok Jin Choi
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Patent number: 8800037Abstract: 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: GrantFiled: June 22, 2010Date of Patent: August 5, 2014Assignee: Electronics and Telecommunications Research InstituteInventors: Seung Hyun Paek, In Sung Park, Eun Young Lee, Joo Beom Yun, Ki Wook Sohn, Seok Jin Choi
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Patent number: 8613865Abstract: 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: GrantFiled: September 14, 2012Date of Patent: December 24, 2013Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Seok Jin Choi, Jelliarko Palgunadi, Je Eun Kang, Hoon Sik Kim, Sung Yeup Chung
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Publication number: 20130012699Abstract: 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: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Applicants: Kia Motors Corporation, Hyundai Motor CompanyInventors: Seok Jin Choi, Jelliarko Palgunadi, Je Eun Kang, Hoon Sik Kim, Sung Yeup Chung
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Patent number: 8287627Abstract: 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: GrantFiled: November 4, 2009Date of Patent: October 16, 2012Assignee: Hyundai Motor CompanyInventors: Sung Yeup Chung, Ki Chun Lee, Seok Jin Choi, Hoon Sik Kim, Jelliarko Palgunadi, Je Eun Kang
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Patent number: 8282710Abstract: 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: GrantFiled: September 30, 2009Date of Patent: October 9, 2012Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Seok Jin Choi, Jelliarko Palgunadi, Je Eun Kang, Hoon Sik Kim, Sung Yeup Chung
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Publication number: 20120096552Abstract: 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: ApplicationFiled: June 22, 2010Publication date: April 19, 2012Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Seung Hyun Paek, In Sung Park, Eun Young Lee, Joo Beom Yun, Ki Wook Sohn, Seok Jin Choi
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Publication number: 20120022798Abstract: 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: ApplicationFiled: November 4, 2010Publication date: January 26, 2012Applicants: INDUSTRY FOUNDATION OF CHONNAM NATIONAL UNIVERSITY, HYUNDAI MOTOR COMPANYInventors: Ju Hyung Lee, Min Chul Shin, Seok Jin Choi, Chang Kook Hong, Song Yi Bae
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Publication number: 20110244522Abstract: 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: ApplicationFiled: December 10, 2010Publication date: October 6, 2011Inventors: TAE SEOK SEO, Jae Hwan Jung, Seok Jin Choi
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Publication number: 20110239294Abstract: 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: ApplicationFiled: November 11, 2010Publication date: September 29, 2011Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Tae Ghyoon KIM, Young Han CHOI, Seok Jin CHOI, Cheol Won LEE
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Publication number: 20100326277Abstract: 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: ApplicationFiled: November 4, 2009Publication date: December 30, 2010Applicants: HYUNDAI MOTOR COMPANYInventors: Sung Yeup Chung, Ki Chun Lee, Seok Jin Choi, Hoon Sik Kim, Jelliarko Palgunadi, Je Eun Kang
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Patent number: D1025167Type: GrantFiled: April 28, 2023Date of Patent: April 30, 2024Inventors: 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
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Patent number: D1025168Type: GrantFiled: April 28, 2023Date of Patent: April 30, 2024Inventors: 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