Patents by Inventor Yeon CHANG

Yeon CHANG 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: 20240182872
    Abstract: The present disclosure relates to a citrate synthase variant, a microorganism comprising the variant, and a method for producing L-amino acids using the microorganism.
    Type: Application
    Filed: March 10, 2022
    Publication date: June 6, 2024
    Applicant: CJ CHEILJEDANG CORPORATION
    Inventors: Jin Sook CHANG, Ju-yeon KIM, Seon Hye KIM, Sun Hyoung CHOI, Byoung Hoon YOON, Hyung Joon KIM, Seung Hyun CHO, Jaemin LEE, Seo-Yun KIM, Imsang LEE
  • Publication number: 20240174898
    Abstract: The present invention relates to a functional pressure-sensitive composition having high heat resistance and bending resistance characteristics, including: 40 to 55 wt % of a urethane acrylate oligomer, 30 to 44 wt % of an acrylate monomer, 2 to 5 wt % of a photoinitiator, 0.2 to 2 wt % of a silane coupling agent, 0.1 to 1 wt % of a light stabilizer, 0.1 to 1 wt % of an ultraviolet absorber and 0.1 to 1 wt % of an antioxidant, and an electrical component with a 3D structure using the same.
    Type: Application
    Filed: August 18, 2023
    Publication date: May 30, 2024
    Applicants: HYUNDAI MOBIS CO., LTD., Sonid Inc.
    Inventors: Jae Joon CHANG, Hyeon Don KIM, Eun Chang LEE, Jae Min LEE, Byeong Chan SONG, Hyun LEE, Tae Won HWANG, So Yeon LIM
  • Publication number: 20240150731
    Abstract: The present disclosure relates to a novel citrate synthase variant, a microorganism comprising the variant, and a method for producing L-amino acids using the microorganism.
    Type: Application
    Filed: March 10, 2022
    Publication date: May 9, 2024
    Applicant: CJ CHEILJEDANG CORPORATION
    Inventors: Jin Sook CHANG, Ju-yeon KIM, Seon Hye KIM, Hyung Joon KIM, Byoung Hoon YOON, Heeseok LEE
  • Patent number: 11961551
    Abstract: A bitline sense amplifier including: an amplifier which is connected between a first sensing bitline and a second sensing bitline, and detects and amplifies a voltage difference between a first bitline and a second bitline in response to a first control signal and a second control signal; and an equalizer which is connected between a first supply line through which the first control signal is supplied and a second supply line through which the second control signal is supplied, and pre-charges the first bitline and the second bitline with a precharge voltage in response to an equalizing control signal, wherein the equalizer includes an equalizing enable transistor in which a source terminal is connected to the first supply line and performs equalizing in response to the equalizing control signal.
    Type: Grant
    Filed: January 27, 2022
    Date of Patent: April 16, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Soo Bong Chang, Young-Il Lim, Bok-Yeon Won, Seok Jae Lee, Dong Geon Kim, Myeong Sik Ryu, In Seok Baek, Kyoung Min Kim, Sang Wook Park
  • Publication number: 20230395569
    Abstract: Semiconductor devices, such as memory devices, and associated systems and methods, are disclosed herein. A representative memory device includes a substrate including circuitry, back-end contacts electrically coupled to the circuitry, and front-end contacts. The front-end contacts are configured to receive electrical signals from an external device via a front-end interface. Individual ones of the front-end contacts are electrically coupled to and aligned along an axis with corresponding ones of the back-end contacts.
    Type: Application
    Filed: May 25, 2023
    Publication date: December 7, 2023
    Inventors: Chin Hui Chong, Hari Giduturi, Yeon-Chang Hahm
  • Publication number: 20220351076
    Abstract: Provided is a personalized node ranking (PNR) system and method using random walk. In detail, a personalized ranking method using random walk includes verifying whether propagation of a positive score or a negative score of a currently-visiting node is trustworthy based on an edge sign between a seed node and a next-visiting node predicted by using a classification model, and when the propagation is trustworthy according to the verification, propagating a score by using a first score propagation method based on balance theory, and when the propagation is untrustworthy according to the verification, propagating a score by using a second score propagation method based on a ratio between a balanced triangle and an unbalanced triangle of a signed network.
    Type: Application
    Filed: April 28, 2022
    Publication date: November 3, 2022
    Applicant: IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)
    Inventors: Sang Wook KIM, Yeon Chang LEE, Won Chang LEE
  • Publication number: 20220230060
    Abstract: A neuromorphic device includes: a neuron block unit including a plurality of neurons; a synapse block unit including a plurality of synapses; and a topology block unit including a plurality of parallel Look-Up Table (LUT) modules including pre and post neuron elements configured with addresses of a presynaptic neuron and a postsynaptic neuron. Each of the plurality of neurons has an intrinsic address, each of the plurality of synapses has an intrinsic address. The parallel LUT module is partitioned based on a first synapse address among synapse addresses, and each of the partitions is indexed based on a second synapse address among the synapse addresses.
    Type: Application
    Filed: July 5, 2019
    Publication date: July 21, 2022
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Vladimir KORNIJCUK, Doo Seok JEONG, Joon Young KWAK, Jae Wook KIM, Jong Kil PARK, In Ho KIM, Jong Keuk PARK, Su Youn LEE, Yeon Joo JEONG, Joon Yeon CHANG
  • Patent number: 10622490
    Abstract: Provided is a reconfigurable logic device using an electrochemical potential. The device includes first and second semiconductor channels, where an effective magnetic field direction of a channel is controlled by a current direction and which are spaced apart from each other, a first ferromagnetic gate contacting the first semiconductor channel and a second ferromagnetic gate contacting the second semiconductor channel, where a magnetization direction is controlled by a gate voltage, and a control unit configured to calculate a difference value corresponding to a difference between a first determination value and a second determination value, and compare the difference value with a reference value to determine an output value.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: April 14, 2020
    Assignee: Korea Institute of Science and Technology
    Inventors: Hyun Cheol Koo, Hyung Jun Kim, Cha Un Jang, Joon Yeon Chang, Suk Hee Han, Joo Hyeon Lee
  • Publication number: 20190035943
    Abstract: Provided is a reconfigurable logic device using an electrochemical potential. The device includes first and second semiconductor channels, where an effective magnetic field direction of a channel is controlled by a current direction and which are spaced apart from each other, a first ferromagnetic gate contacting the first semiconductor channel and a second ferromagnetic gate contacting the second semiconductor channel, where a magnetization direction is controlled by a gate voltage, and a control unit configured to calculate a difference value corresponding to a difference between a first determination value and a second determination value, and compare the difference value with a reference value to determine an output value.
    Type: Application
    Filed: March 14, 2018
    Publication date: January 31, 2019
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hyun Cheol KOO, Hyung Jun KIM, Cha Un JANG, Joon Yeon CHANG, Suk Hee HAN, Joo Hyeon LEE
  • Patent number: 10071908
    Abstract: The present disclosure provides a burner for a reduction reactor, the reduction reactor has a reaction space formed therein, wherein each burner has a fuel feeding hole and multiple oxygen feeding holes formed therein, wherein each burner has an elongate combustion space formed at one end of a head portion thereof, the combustion space fluid-communicating with the reaction space of the reactor, wherein the elongate combustion space has a length such that oxygen supplied from the oxygen feeding holes thereto is completely consumed via oxidation or combustion with fuels supplied from the fuel feeding hole thereto only in the elongate combustion space upon igniting the burner.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: September 11, 2018
    Inventors: Yeon Chang, Sang Won Kim
  • Patent number: 10014396
    Abstract: A spin control electronic device operable at room temperature according to an embodiment of the present invention includes a transfer channel that includes a low-dimensional nanostructure, the nanostructure being located on a substrate, having an elongate shape in a first direction and having a cross section, cut along a second direction that is perpendicular to the first direction, in the shape of a triangle; a source electrode located on the substrate and intersecting the transfer channel, the source electrode covering part of the transfer channel; and a drain electrode spaced apart from the source electrode on the substrate, the drain electrode intersecting the transfer channel and covering part of the transfer channel.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: July 3, 2018
    Assignee: Korea Institute of Science and Technology
    Inventors: Joon Yeon Chang, Tae Eon Park, Byoung Chul Min, Hyun Cheol Koo, Suk Hee Han
  • Publication number: 20170301778
    Abstract: A spin control electronic device operable at room temperature according to an embodiment of the present invention includes a transfer channel that includes a low-dimensional nanostructure, the nanostructure being located on a substrate, having an elongate shape in a first direction and having a cross section, cut along a second direction that is perpendicular to the first direction, in the shape of a triangle; a source electrode located on the substrate and intersecting the transfer channel, the source electrode covering part of the transfer channel; and a drain electrode spaced apart from the source electrode on the substrate, the drain electrode intersecting the transfer channel and covering part of the transfer channel.
    Type: Application
    Filed: April 14, 2017
    Publication date: October 19, 2017
    Applicant: Korea Institute of Science and Technology
    Inventors: Joon Yeon CHANG, Tae Eon PARK, Byoung Chul MIN, Hyun Cheol KOO, Suk Hee HAN
  • Patent number: 9743415
    Abstract: A system for outputting content through a network includes: a first server configured to store content received in an account of a user; and a second server configured to obtain the content from the first server, convert the content into output data, and transmit the output data to an output device, according to an output request received from a mobile terminal of the user, wherein when the second server receives a request to check the content from the mobile terminal, the second server provides a preview of the content, instead of an original file of the content, to the mobile terminal.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: August 22, 2017
    Assignee: S-PRINTING SOLUTION CO., LTD.
    Inventors: Jeong-jin Park, Yong-chan Kwon, Kasey Kim, Min-jae Kim, Sang-ho Kim, Yoon-bum No, Woo-yeon Chang
  • Publication number: 20160370003
    Abstract: The present disclosure provides a burner for a reduction reactor, the reduction reactor has a reaction space formed therein, wherein each burner has a fuel feeding hole and multiple oxygen feeding holes formed therein, wherein each burner has an elongate combustion space formed at one end of a head portion thereof, the combustion space fluid-communicating with the reaction space of the reactor, wherein the elongate combustion space has a length such that oxygen supplied from the oxygen feeding holes thereto is completely consumed via oxidation or combustion with fuels supplied from the fuel feeding hole thereto only in the elongate combustion space upon igniting the burner.
    Type: Application
    Filed: May 13, 2016
    Publication date: December 22, 2016
    Inventor: Yeon CHANG
  • Publication number: 20160219575
    Abstract: A system for outputting content through a network includes: a first server configured to store content received in an account of a user; and a second server configured to obtain the content from the first server, convert the content into output data, and transmit the output data to an output device, according to an output request received from a mobile terminal of the user, wherein when the second server receives a request to check the content from the mobile terminal, the second server provides a preview of the content, instead of an original file of the content, to the mobile terminal.
    Type: Application
    Filed: December 16, 2015
    Publication date: July 28, 2016
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeong-jin PARK, Yong-chan KWON, Kasey KIM, Min-jae KIM, Sang-ho KIM, Yoon-bum NO, Woo-yeon CHANG
  • Patent number: 9331266
    Abstract: A non-volatile reconfigurable logic device executing logical operations and a memory function and controlled by a magnetic field is provided. The reconfigurable logic device includes i) at least one semiconductor device; and ii) a pair of magnetic field controlled devices respectively spaced apart from both sides of the semiconductor device and that are adapted to generate magnetic field leakage to control the semiconductor device. The semiconductor device includes i) a first semiconductor layer; and ii) a second semiconductor layer located on the first semiconductor layer. One of the first semiconductor layer and the second semiconductor layer is a p-type semiconductor layer and the other is an n-type semiconductor layer.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: May 3, 2016
    Assignees: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY, THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF THE NAVY
    Inventors: Joon Yeon Chang, Jin Ki Hong, Jin Dong Song, Mark Johnson
  • Patent number: 9099328
    Abstract: A complementary device including a gate electrode, a channel, a source electrode connected to the gate electrode and the channel, and a first drain electrode and a second drain electrode connected to the gate electrode and the channel is provided. The first/second drain electrode is formed so that, in accordance with a voltage applied to the gate electrode, electron spins injected into the source electrode are moved from the source electrode to the first/second drain electrode through the channel while rotating in a first/second direction. Directions of the electron spins that reach the first drain electrode and the second drain electrode are opposite to each other.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: August 4, 2015
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hyun Cheol Koo, Hyung-Jun Kim, Joon Yeon Chang, Jun Woo Choi, Suk Hee Han
  • Publication number: 20140264514
    Abstract: A complementary device including a gate electrode, a channel, a source electrode connected to the gate electrode and the channel, and a first drain electrode and a second drain electrode connected to the gate electrode and the channel is provided. The first/second drain electrode is formed so that, in accordance with a voltage applied to the gate electrode, electron spins injected into the source electrode are moved from the source electrode to the first/second drain electrode through the channel while rotating in a first/second direction. Directions of the electron spins that reach the first drain electrode and the second drain electrode are opposite to each other.
    Type: Application
    Filed: October 11, 2013
    Publication date: September 18, 2014
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hyun Cheol KOO, Hyung-Jun KIM, Joon Yeon CHANG, Jun Woo CHOI, Suk Hee HAN
  • Publication number: 20140167814
    Abstract: A non-volatile reconfigurable logic device executing logical operations and a memory function and controlled by a magnetic field is provided. The reconfigurable logic device includes i) at least one semiconductor device; and ii) a pair of magnetic field controlled devices respectively spaced apart from both sides of the semiconductor device and that are adapted to generate magnetic field leakage to control the semiconductor device. The semiconductor device includes i) a first semiconductor layer; and ii) a second semiconductor layer located on the first semiconductor layer. One of the first semiconductor layer and the second semiconductor layer is a p-type semiconductor layer and the other is an n-type semiconductor layer.
    Type: Application
    Filed: December 18, 2013
    Publication date: June 19, 2014
    Applicants: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Joon Yeon CHANG, Jin Ki HONG, Jin Dong SONG, Mark JOHNSON
  • Patent number: 8624026
    Abstract: Disclosed are a novel, simple and low-cost method for preparing sitagliptin of formula (I), as DPP-IV (dipeptidyl peptidase IV) inhibitor, which is useful in treating type 2 diabetes mellitus and key intermediates used in said preparation of sitagliptin:
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: January 7, 2014
    Assignee: Hanmi Science Co., Ltd
    Inventors: Nam Du Kim, Ji Yeon Chang, Dong Jun Kim, Hyun Seung Lee, Jae Hyuk Jung, Young Kil Chang, Gwan Sun Lee