Patents by Inventor Keun HEO

Keun HEO 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: 20240301527
    Abstract: An aspect of the present invention relates to a cold-rolled steel plate for hot forming, which is excellent in corrosion-resistance and spot-weldability, contains, by weight %, C: 0.1-0.4%, Si: 0.5-2.0%, Mn: 0.01-4.0%, Al: 0.001-0.4%, P: 0.001-0.05%, S: 0.0001-0.02%, Cr: 0.5% to less than 3.0%, N: 0.001-0.02%, and a balance of Fe and inevitable impurities, satisfying formula (1) below, and includes an Si amorphous oxidation layer continuously or discontinuously formed at a thickness of 1 nm-100 nm on the surface thereof. Formula (1): 1.4? 0.4*Cr+Si?3.2 (wherein element symbols denote measurements of respective element contents by weight %).
    Type: Application
    Filed: May 16, 2024
    Publication date: September 12, 2024
    Applicant: POSCO CO., LTD
    Inventors: Jin-Keun Oh, Yeol-Rae Cho, A-Ra Cho, Jin-Ho Cha, Si-Myoung Heo, Jeong-Won Seo, Seong-Woo Kim
  • Publication number: 20240297290
    Abstract: A vertical type apparatus for firing a cathode material of a secondary battery is provided. The vertical type apparatus for firing the cathode material according to the present disclosure includes a plurality of saggers, each having an open upper portion, provided with a through-slit for gas flow in a lower surface thereof, and loaded with the cathode material therein, and a plurality of unit firing furnaces, each having an open upper portion, each plurally stacked in the vertical direction, each receiving the respective sagger.
    Type: Application
    Filed: December 17, 2021
    Publication date: September 5, 2024
    Applicants: POSCO Holdings Inc., Research Institute of Industrial Science & Technology, POSCO Chemical Co., Ltd.
    Inventors: Choongmo YANG, Yong Hyun LEE, Jongyun MOON, Byoung Mu DO, Yeong Woo KIM, Sang Keun SONG, Soon Cheol HWANG, Jeong Heon HEO, Ji Woong MOON, Woo Taek KIM, Hyeon Woo KIM, Keeyoung JUNG, Yooncheol PARK, Min Young HWANG
  • Patent number: 12049679
    Abstract: An aspect of the present invention relates to a cold-rolled steel plate for hot forming, which is excellent in corrosion-resistance and spot-weldability, contains, by weight %, C: 0.1-0.4%, Si: 0.5-2.0%, Mn: 0.01-4.0%, Al: 0.001-0.4%, P: 0.001-0.05%, S: 0.0001-0.02%, Cr: 0.5% to less than 3.0%, N: 0.001-0.02%, and a balance of Fe and inevitable impurities, satisfying formula (1) below, and includes an Si amorphous oxidation layer continuously or discontinuously formed at a thickness of 1 nm-100 nm on the surface thereof. Formula (1): 1.4?0.4*Cr+Si?3.2 (wherein element symbols denote measurements of respective element contents by weight %).
    Type: Grant
    Filed: September 5, 2023
    Date of Patent: July 30, 2024
    Assignee: POSCO CO., LTD
    Inventors: Jin-Keun Oh, Yeol-Rae Cho, A-Ra Cho, Jin-Ho Cha, Si-Myoung Heo, Jeong-Won Seo, Seong-Woo Kim
  • Publication number: 20240246940
    Abstract: The present invention relates to a heteroaryl derivative compound and a use thereof. The heteroaryl derivative of the present invention exhibits excellent inhibitory activity against HER2 and EGFR, and thus can be effectively used as a therapeutic agent for HER2- and/or EGFR-associated diseases.
    Type: Application
    Filed: April 8, 2022
    Publication date: July 25, 2024
    Inventors: Yi Kyung KO, Jin Hee PARK, Yeong Deok LEE, Hye Rim IM, Kyun Eun KIM, Dong Keun HWANG, Ah Reum HAN, Su Been NAM, Myung Hoe HEO, Eun Hwa KO, Hwan Geun CHOI, Sung Hwan KIM, Hong Ryul JUNG, Ji Hye YOO
  • Publication number: 20240079496
    Abstract: A negative differential resistance device includes a dielectric layer having a first surface and a second surface opposing the first surface, a first semiconductor layer that includes a first degenerated layer that is on the first surface of the dielectric layer and has a first polarity, a second semiconductor layer that includes a second degenerated layer that has a region that overlaps the first semiconductor layer and has a second polarity, a first electrode electrically connected to the first semiconductor layer, a second electrode electrically connected to the second semiconductor layer, and a third electrode on the second surface of the dielectric layer and which has a region overlapping at least one of the first semiconductor layer or the second semiconductor layer.
    Type: Application
    Filed: April 27, 2023
    Publication date: March 7, 2024
    Applicants: SAMSUNG ELECTRONICS CO., LTD., RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Kilsu JUNG, Jin-Hong PARK, Keun HEO, Sungjun KIM
  • Patent number: 11922298
    Abstract: A neuron device is described. The neuron device is based on spontaneous polarization switching which includes a plurality of gate electrodes, a plurality of drain electrodes, a plurality of source lines, a dielectric layer, and a semiconductor layer. The gate electrodes are arranged parallel to each other. The drain electrodes are arranged parallel to each other. The source lines are arranged between the gate electrodes and the drain electrodes and parallel to each other. The dielectric layer is formed at intersections between the gate electrodes and the source lines. The semiconductor layer is formed at intersections between the drain electrodes and the source electrodes. The drain electrodes function as synapse-after-neuron linking terminals. The gate electrodes adjust an arrangement direction of electrical dipoles of the dielectric layer to control a firing time point and a firing height of the neuron device.
    Type: Grant
    Filed: April 27, 2020
    Date of Patent: March 5, 2024
    Assignees: SAMSUNG ELECTRONICS CO., LTD., RESEARCH & BUSINESS FOUNDATION SUNKYUNKWAN UNIVERSITY
    Inventors: Jinhong Park, Sungjun Kim, Keun Heo, Hyeongjun Kim, Seyong Oh
  • Patent number: 11670714
    Abstract: A negative differential resistance device includes a dielectric layer having a first surface and a second surface opposing the first surface, a first semiconductor layer that includes a first degenerated layer that is on the first surface of the dielectric layer and has a first polarity, a second semiconductor layer that includes a second degenerated layer that has a region that overlaps the first semiconductor layer and has a second polarity, a first electrode electrically connected to the first semiconductor layer, a second electrode electrically connected to the second semiconductor layer, and a third electrode on the second surface of the dielectric layer and which has a region overlapping at least one of the first semiconductor layer or the second semiconductor layer.
    Type: Grant
    Filed: June 3, 2021
    Date of Patent: June 6, 2023
    Inventors: Kilsu Jung, Jin-Hong Park, Keun Heo, Sungjun Kim
  • Publication number: 20220384500
    Abstract: A photodetector includes a gate electrode extending in a first direction, a ferroelectric layer on the gate electrode and maintaining a state of polarization formed by a gate voltage applied to the gate electrode, a light absorbing layer on the ferroelectric layer and extending in a second direction intersecting the gate electrode, the light absorbing layer including a two-dimensional (2D) material of a layered structure, a source electrode on the ferroelectric layer and connected to a first end of the light absorbing layer, and a drain electrode on the ferroelectric layer and connected to the a second end of the light absorbing layer.
    Type: Application
    Filed: February 10, 2022
    Publication date: December 1, 2022
    Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Sungjun KIM, Jin-Hong PARK, Sunghun LEE, Keun HEO
  • Patent number: 11489041
    Abstract: A semiconductor device according to an embodiment may include a board, an insulation layer disposed on the board, a threshold voltage control layer disposed on the insulation layer, a first semiconductor layer disposed on the threshold voltage control layer, and a second semiconductor layer disposed on the threshold voltage control layer to cover a portion of the first semiconductor layer. A negative differential resistance device according to an embodiment has an advantageous effect in that the gate voltage enables a peak voltage to be freely controlled within an operation range of the device by forming the threshold voltage control layer.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: November 1, 2022
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Jin Hong Park, Kil Su Jung, Keun Heo, Sung Jun Kim
  • Patent number: 11437572
    Abstract: Provided is a negative differential resistance element having a 3-dimension vertical structure. The negative differential resistance element having a 3-dimension vertical structure includes: a substrate; a first electrode that is formed on the substrate to receive a current; a second semiconductor material that is formed in some region of the substrate; a first semiconductor material that is deposited in some other region and the first electrode of the substrate and some region of an upper end of the second semiconductor material; an insulator that has a part vertically erected from the substrate, the other part vertically erected from the second semiconductor material, and an upper portion stacked with a first semiconductor material; and a second electrode that is formed at an upper end of the second semiconductor material to output a current, thereby significantly reducing an area of the device and greatly improving device scaling and integration.
    Type: Grant
    Filed: May 11, 2020
    Date of Patent: September 6, 2022
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Jin Hong Park, Kil Su Jung, Keun Heo
  • Publication number: 20220093803
    Abstract: A negative differential resistance device includes a dielectric layer having a first surface and a second surface opposing the first surface, a first semiconductor layer that includes a first degenerated layer that is on the first surface of the dielectric layer and has a first polarity, a second semiconductor layer that includes a second degenerated layer that has a region that overlaps the first semiconductor layer and has a second polarity, a first electrode electrically connected to the first semiconductor layer, a second electrode electrically connected to the second semiconductor layer, and a third electrode on the second surface of the dielectric layer and which has a region overlapping at least one of the first semiconductor layer or the second semiconductor layer.
    Type: Application
    Filed: June 3, 2021
    Publication date: March 24, 2022
    Applicants: SAMSUNG ELECTRONICS CO., LTD., RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Kilsu JUNG, Jin-Hong PARK, Keun HEO, Sungjun KIM
  • Patent number: 11276761
    Abstract: A semiconductor device includes at least one trench extending into a semiconductor substrate and lined with a gate dielectric layer; a dipole inducing layer covering a lowermost portion of the lined trench; a gate electrode covering the dipole inducing layer and filled in the lined trench; and doping regions, in the semiconductor substrate, separated from each other by the lined trench and separated from the dipole inducing layer.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: March 15, 2022
    Assignee: SK hynix Inc.
    Inventors: Dong-Soo Kim, Sung-Won Lim, Eun-Jeong Kim, Hyun-Jin Chang, Keun Heo, Jee-Hyun Kim
  • Publication number: 20210005710
    Abstract: A semiconductor device according to an embodiment may include a board, an insulation layer disposed on the board, a threshold voltage control layer disposed on the insulation layer, a first semiconductor layer disposed on the threshold voltage control layer, and a second semiconductor layer disposed on the threshold voltage control layer to cover a portion of the first semiconductor layer. A negative differential resistance device according to an embodiment has an advantageous effect in that the gate voltage enables a peak voltage to be freely controlled within an operation range of the device by forming the threshold voltage control layer.
    Type: Application
    Filed: June 30, 2020
    Publication date: January 7, 2021
    Applicant: Research & Business Foundation Sungkyunkwan University
    Inventors: Jin Hong PARK, Kil Su JUNG, Keun HEO, Sung Jun KIM
  • Publication number: 20200357988
    Abstract: Provided is a negative differential resistance element having a 3-dimension vertical structure. The negative differential resistance element having a 3-dimension vertical structure includes: a substrate; a first electrode that is formed on the substrate to receive a current; a second semiconductor material that is formed in some region of the substrate; a first semiconductor material that is deposited in some other region and the first electrode of the substrate and some region of an upper end of the second semiconductor material; an insulator that has a part vertically erected from the substrate, the other part vertically erected from the second semiconductor material, and an upper portion stacked with a first semiconductor material; and a second electrode that is formed at an upper end of the second semiconductor material to output a current, thereby significantly reducing an area of the device and greatly improving device scaling and integration.
    Type: Application
    Filed: May 11, 2020
    Publication date: November 12, 2020
    Applicant: Research & Business Foundation Sungkyunkwan University
    Inventors: Jin Hong PARK, Kil Su JUNG, Keun HEO
  • Publication number: 20200342300
    Abstract: A neuron device is described. The neuron device is based on spontaneous polarization switching which includes a plurality of gate electrodes, a plurality of drain electrodes, a plurality of source lines, a dielectric layer, and a semiconductor layer. The gate electrodes are arranged parallel to each other. The drain electrodes are arranged parallel to each other. The source lines are arranged between the gate electrodes and the drain electrodes and parallel to each other. The dielectric layer is formed at intersections between the gate electrodes and the source lines. The semiconductor layer is formed at intersections between the drain electrodes and the source electrodes. The drain electrodes function as synapse-after-neuron linking terminals. The gate electrodes adjust an arrangement direction of electrical dipoles of the dielectric layer to control a firing time point and a firing height of the neuron device.
    Type: Application
    Filed: April 27, 2020
    Publication date: October 29, 2020
    Applicant: Research & Business Foundation Sungkyunkwan University
    Inventors: Jinhong PARK, Sungjun KIM, Keun HEO, Hyeongjun KIM, Seyong OH
  • Publication number: 20200152754
    Abstract: A semiconductor device includes at least one trench extending into a semiconductor substrate and lined with a gate dielectric layer; a dipole inducing layer covering a lowermost portion of the lined trench; a gate electrode covering the dipole inducing layer and filled in the lined trench; and doping regions, in the semiconductor substrate, separated from each other by the lined trench and separated from the dipole inducing layer.
    Type: Application
    Filed: January 6, 2020
    Publication date: May 14, 2020
    Inventors: Dong-Soo KIM, Sung-Won LIM, Eun-Jeong KIM, Hyun-Jin CHANG, Keun HEO, Jee-Hyun KIM
  • Patent number: 10559626
    Abstract: A neuromorphic device is provided. The neuromorphic device may include a pre-synaptic neuron; a row line extending in a row direction from the pre-synaptic neuron; a post-synaptic neuron; a column line extending in a column direction from the post-synaptic neuron; and a synapse disposed at an intersection between the row line and the column line. The synapse may include a first synapse layer including a plurality of first carbon nano-tubes; a second synapse layer including a plurality of second carbon nano-tubes having different structures from the plurality of first carbon nano-tubes; and a third synapse layer including a plurality of third carbon nano-tubes having different structures from the plurality of first carbon nano-tubes and the plurality of second carbon nano-tubes.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: February 11, 2020
    Assignee: SK hynix Inc.
    Inventors: Yong-Soo Choi, Keun Heo, Hyung-Dong Lee
  • Patent number: 10553692
    Abstract: A semiconductor device includes at least one trench extending into a semiconductor substrate and lined with a gate dielectric layer; a dipole inducing layer covering a lowermost portion of the lined trench; a gate electrode covering the dipole inducing layer and filled in the lined trench; and doping regions, in the semiconductor substrate, separated from each other by the lined trench and separated from the dipole inducing layer.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: February 4, 2020
    Assignee: SK hynix Inc.
    Inventors: Dong-Soo Kim, Sung-Won Lim, Eun-Jeong Kim, Hyun-Jin Chang, Keun Heo, Jee-Hyun Kim
  • Patent number: 10254975
    Abstract: Apparatuses having variable communication speeds are disclose. In one example, an apparatus may comprise a controller configured to: receive a signal from a host, the signal being compatible with a data communication protocol at a first data communication speed; selectively implement a first data communication protocol from a plurality of data communication protocols to communicate with a first memory or implement a second data communication protocol from the plurality of data communication protocols to communicate with a second memory based on the data communication speed; store data in the first memory via the first data communication protocol when the data communication speed is a first speed; and store data in the second memory via the second data communication protocol when the data communication speed is a second speed that is different than the first speed.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: April 9, 2019
    Assignee: Seagate Technology Incorporated
    Inventors: Keun Heo, Byung Wook Kim, Young Min Ku
  • Publication number: 20180240846
    Abstract: A neuromorphic device is provided. The neuromorphic device may include a pre-synaptic neuron; a row line extending in a row direction from the pre-synaptic neuron; a post-synaptic neuron; a column line extending in a column direction from the post-synaptic neuron; and a synapse disposed at an intersection between the row line and the column line. The synapse may include a first synapse layer including a plurality of first carbon nano-tubes; a second synapse layer including a plurality of second carbon nano-tubes having different structures from the plurality of first carbon nano-tubes; and a third synapse layer including a plurality of third carbon nano-tubes having different structures from the plurality of first carbon nano-tubes and the plurality of second carbon nano-tubes.
    Type: Application
    Filed: July 12, 2017
    Publication date: August 23, 2018
    Inventors: Yong-Soo CHOI, Keun HEO, Hyung-Dong LEE