Patents by Inventor Ji Eun CHOI
Ji Eun 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: 20220218715Abstract: The present invention relates to a pharmaceutical composition for the prevention or treatment of cancer, comprising an anticancer drug and a pyrrolo-pyridine derivative as an active ingredient. A compound represented by Chemical Formula I according to the present invention, an isomer thereof, or a pharmaceutically acceptable salt thereof has excellent inhibitory activity against protein kinases, and thus, when used in combination with other anticancer drugs, can be effectively used in the prevention, treatment or amelioration of cancer.Type: ApplicationFiled: May 22, 2020Publication date: July 14, 2022Inventors: Jae Young AHN, Hwan KIM, Dong Hyuk SEO, Ji Eun CHOI, Hye Min HWANG, Hyun Kyung KIM, Sung Hwan KIM, Dae Kwon KIM
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Publication number: 20220184543Abstract: A portable air purifier is provided that may include a housing having an inlet forming a passage through which air is suctioned into the housing, a filter disposed at an upper side of the inlet and configured to purify air suctioned in through the inlet and flowing upward, an irradiator disposed at a lower side of the filter, installed at a height at which the irradiator overlaps the inlet and configured to irradiate light for sterilization onto the filter, and a sterilizer support configured to support the irradiator and configured to be fixed to the housing and disposed around an outer perimeter of the irradiator.Type: ApplicationFiled: October 22, 2021Publication date: June 16, 2022Inventors: Ji Eun CHOI, Hyungho PARK, Seongkyeol HONG
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Publication number: 20220162179Abstract: The present invention relates to a method for the synthesis of 2,5-furandicarboxylic acid, and more specifically, the present invention relates to a more efficient and economical method capable of preparing 2,5-furandicarboxylic acid having various functions with high purity and high yield, even without using a transition metal catalyst.Type: ApplicationFiled: March 20, 2020Publication date: May 26, 2022Applicants: SAMYANG CORPORATION, RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITYInventors: Chun Rim OH, Deuk Rak LEE, Won Jung LEE, Chi Wan LEE, Ji Eun CHOI, Young Sug KIM, Jung Woon YANG, Tae Woo LEE
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Patent number: 11342401Abstract: A display device includes: a base substrate having a display region including a first region and a second region, and a non-display region; a first semiconductor layer including polysilicon at the second region; a first conductive layer on a first insulating layer, and including a bottom gate electrode at the first region and a second-first gate electrode at the second region; a second semiconductor layer including an oxide on a second insulating layer at the first region; a second conductive layer on a third insulating layer, and including a top gate electrode at the first region and a second-second gate electrode at the second region; and a third conductive layer on a fourth insulating layer, and including a first source electrode and a first drain electrode connected to the second semiconductor layer, and a second source electrode and a second drain electrode connected to the first semiconductor layer.Type: GrantFiled: April 3, 2020Date of Patent: May 24, 2022Assignee: Samsung Display Co., Ltd.Inventors: Ji Eun Choi, Deok Hoi Kim, Jeong Hwan Kim, Jong Baek Seon, Jun Cheol Shin, Jae Hak Lee
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Publication number: 20220090814Abstract: An air cleaning system can rapidly senses occurrence of local pollution, caused by fine dust, through a remote sensor hub and supplies purified air to a polluted area in a concentrated manner, thereby quickly purifying indoor air.Type: ApplicationFiled: September 2, 2021Publication date: March 24, 2022Inventors: Ji Eun CHOI, Hyungho PARK, Jinhee NOH, Dongryul PARK, Seongman JANG
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Publication number: 20210013280Abstract: A display device includes: a base substrate having a display region including a first region and a second region, and a non-display region; a first semiconductor layer including polysilicon at the second region; a first conductive layer on a first insulating layer, and including a bottom gate electrode at the first region and a second-first gate electrode at the second region; a second semiconductor layer including an oxide on a second insulating layer at the first region; a second conductive layer on a third insulating layer, and including a top gate electrode at the first region and a second-second gate electrode at the second region; and a third conductive layer on a fourth insulating layer, and including a first source electrode and a first drain electrode connected to the second semiconductor layer, and a second source electrode and a second drain electrode connected to the first semiconductor layer.Type: ApplicationFiled: April 3, 2020Publication date: January 14, 2021Inventors: Ji Eun CHOI, Deok Hoi KIM, Jeong Hwan KIM, Jong Baek SEON, Jun Cheol SHIN, Jae Hak LEE
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Patent number: 10815275Abstract: Antimicrobial peptoids with improved selectivity to bacteria and a use thereof are described. Specifically, the antimicrobial peptoids have high antimicrobial activity and greatly decreased toxicity to animal cells. The antimicrobial peptoids show excellent antimicrobial activity against bacteria and exhibit low cytotoxicity to animal cells due to altered degree of folding in helical structure or altered charge characteristics. Therefore, the antimicrobial peptoids have improved selectivity to bacteria, and thus can be usefully used as antimicrobial compositions.Type: GrantFiled: March 19, 2019Date of Patent: October 27, 2020Assignee: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Jiwon Seo, Ho Yeon Nam, Ji Eun Choi
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Patent number: 10805721Abstract: An apparatus and method for preventing an electronic device from recording. The apparatus includes a control unit for generating a first modulation signal and controlling the components of the apparatus; a first modulation unit for modulating the first modulation signal to an FM signal; an ultrasonic signal generation unit for generating an ultrasonic signal, the frequency of which is adjusted by changing the value of at least one of a variable resistor and a variable capacitor depending on the magnitude of the FM signal; an amplification unit for increasing or decreasing the magnitude of the ultrasonic signal; a resonance unit for increasing the voltage to be applied to a transducer by generating resonance; and an ultrasound output unit for converting electrical signals into ultrasonic signals using the transducer and radiating a recording prevention signal, converted into the ultrasonic signal, to the microphone of an electronic device.Type: GrantFiled: January 23, 2019Date of Patent: October 13, 2020Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Chi Hoon Choi, Ji Eun Choi, Young Jun Lee, Heesun Park, Young Hyoun Kwon, Sae-Hoon Ju, Kyung-Hoon Lee
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Publication number: 20200228897Abstract: An apparatus and method for preventing an electronic device from recording. The apparatus includes a control unit for generating a first modulation signal and controlling the components of the apparatus; a first modulation unit for modulating the first modulation signal to an FM signal; an ultrasonic signal generation unit for generating an ultrasonic signal, the frequency of which is adjusted by changing the value of at least one of a variable resistor and a variable capacitor depending on the magnitude of the FM signal; an amplification unit for increasing or decreasing the magnitude of the ultrasonic signal; a resonance unit for increasing the voltage to be applied to a transducer by generating resonance; and an ultrasound output unit for converting electrical signals into ultrasonic signals using the transducer and radiating a recording prevention signal, converted into the ultrasonic signal, to the microphone of an electronic device.Type: ApplicationFiled: January 23, 2019Publication date: July 16, 2020Inventors: Chi Hoon CHOI, Ji Eun CHOI, Young Jun LEE, Heesun PARK, Young Hyoun KWON, Sae-Hoon JU, Kyung-Hoon LEE
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Patent number: 10547571Abstract: A message service providing method for a message service linked to a search service and a message server and a user terminal for performing the method are disclosed. The message service providing method includes identifying an instant message input through a message input box of a message application switching from a chat mode to a search mode or a suggested search word selected from suggested search words in a suggested search word list displayed in conjunction with the message input box, transferring, to a search server, a search request for a search word including a whole or a portion of the identified instant message or suggested search word in response to a user input provided to the message application, receiving search result data derived through the search word.Type: GrantFiled: May 5, 2016Date of Patent: January 28, 2020Assignee: KAKAO CORP.Inventors: June Seong Joe, Doo Wahn Park, Won Muk Kim, Dong Ho Shin, Ji Hye Choe, Seung Jin Park, Hyun Hee Park, Ji Eun Choi, Seung Uk Seo, Yu Mi Kim, Jin Woo Choi, Yang Kyun Park
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Publication number: 20190284238Abstract: The present invention relates to antimicrobial peptoids with improved selectivity to bacteria and a use thereof. Specifically, the present invention relates to antimicrobial peptoids having high antimicrobial activity and greatly decreased toxicity to animal cells. The antimicrobial peptoids of the present invention show excellent antimicrobial activity against bacteria and exhibit low cytotoxicity to animal cells due to altered degree of folding in helical structure or altered charge characteristics. Therefore, the antimicrobial peptoids of the present invention have improved selectivity to bacteria, and thus can be usefully used as antimicrobial compositions.Type: ApplicationFiled: March 19, 2019Publication date: September 19, 2019Inventors: Jiwon SEO, Ho Yeon NAM, Ji Eun CHOI
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Publication number: 20160330150Abstract: A message service providing method for a message service linked to a search service and a message server and a user terminal for performing the method are disclosed. The message service providing method includes identifying an instant message input through a message input box of a message application switching from a chat mode to a search mode or a suggested search word selected from suggested search words in a suggested search word list displayed in conjunction with the message input box, transferring, to a search server, a search request for a search word including a whole or a portion of the identified instant message or suggested search word in response to a user input provided to the message application, receiving search result data derived through the search word.Type: ApplicationFiled: May 5, 2016Publication date: November 10, 2016Applicant: KAKAO CORP.Inventors: June Seong JOE, Doo Wahn PARK, Won Muk KIM, Dong Ho SHIN, Ji Hye CHOE, Seung Jin PARK, Hyun Hee PARK, Ji Eun CHOI, Seung Uk SEO, Yu Mi KIM, Jin Woo CHOI, Yang Kyun PARK
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Patent number: 9376554Abstract: The rubber composition for tire tread and a tire includes 100 parts by weight of a raw material rubber that includes 20 parts by 80 parts by weight of a first solution polymerized styrene-butadiene rubber (SBR1) having a styrene content of 15% to 25% by weight and a vinyl content in the butadiene of 60% to 65% by weight and produced by a batch method; and 60 parts to 90 parts by weight of a silica having a specific surface area measured by nitrogen adsorption of 155 m2/g to 185 m2/g and a CTAB value of 150 m2/g to 170 m2/g.Type: GrantFiled: December 11, 2013Date of Patent: June 28, 2016Assignee: HANKOOK TIRE CO., LTD.Inventors: Ji Eun Choi, Ho Youn Kang
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Publication number: 20150166773Abstract: Provided are a sidewall insert rubber composition for run-flat tire, which includes 100 parts by weight of raw material rubber including 30 to 60 parts by weight of natural rubber and 40 to 70 parts by weight of butadiene rubber; 40 to 70 parts by weight of carbon black; 3 to 10 parts by weight of a novolac resin; and 0.2 to 2 parts by weight of a methylene donor, and a tire produced using the rubber composition. The sidewall insert rubber composition for run-flat tire has excellent processability in an unvulcanized state, and produces a tire having excellent resistance to heat generation, resistance to fatigue and resistance to cracking, and having excellent run-flat performance and excellent low fuel consumption performance.Type: ApplicationFiled: December 15, 2014Publication date: June 18, 2015Inventors: Ji Eun CHOI, Sung Hee PARK
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Publication number: 20140171577Abstract: Provided are a rubber composition for tire tread including 100 parts by weight of a raw material rubber that includes 20 parts by 80 parts by weight of a first solution polymerized styrene-butadiene rubber (SBR1) having a styrene content of 15% to 25% by weight and a vinyl content in the butadiene of 60% to 65% by weight and produced by a batch method; and 60 parts to 90 parts by weight of a silica having a specific surface area measured by nitrogen adsorption of 155 m2/g to 185 m2/g and a CTAB value of 150 m2/g to 170 m2/g, and a tire producing using the rubber composition. The rubber composition for tire tread has excellent processability in an unvulcanized state, and can improve all of the braking performance on wet road surfaces, the braking performance on icy road surfaces, and the low fuel consumption performance.Type: ApplicationFiled: December 11, 2013Publication date: June 19, 2014Applicant: HANKOOK TIRE CO., LTD.Inventors: Ji Eun CHOI, Ho Youn KANG
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Patent number: 8497797Abstract: Provided are a two-dimensional array antenna and a device for detecting an internal object using the same. The device includes a plurality of unit antennas in a two-dimensional array of m columns and n rows on a board (where m and n are integers greater than 1), a first switch selecting one or more transmitting antenna to radiate a pulse signal onto an internal object in a structure from among the unit antennas; a second switch selecting one or more receiving antenna to collect a signal reflected from the internal object from among the unit antennas, and a transceiving analysis module analyzing information about the position and shape of the internal object.Type: GrantFiled: September 9, 2010Date of Patent: July 30, 2013Assignee: Electronics and Telecomunication Research InstituteInventors: Dae Heon Lee, Sung Hyun Kim, Sang Woo Cho, Ji Eun Choi
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Publication number: 20110227777Abstract: Provided are a two-dimensional array antenna and a device for detecting an internal object using the same. The device includes a plurality of unit antennas in a two-dimensional array of m columns and n rows on a board (where m and n are integers greater than 1), a first switch selecting one or more transmitting antenna to radiate a pulse signal onto an internal object in a structure from among the unit antennas; a second switch selecting one or more receiving antenna to collect a signal reflected from the internal object from among the unit antennas, and a transceiving analysis module analyzing information about the position and shape of the internal object.Type: ApplicationFiled: September 9, 2010Publication date: September 22, 2011Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Dae Heon LEE, Sung Hyun KIM, Sang Woo CHO, Ji Eun CHOI