Patents by Inventor Chang Hwan Lee

Chang Hwan Lee 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).

  • Patent number: 11953552
    Abstract: The present disclosure relates to a system and apparatus for monitoring a partial discharge in a switchboard, including a plurality of partial discharge sensors provided in each of a plurality of switchboards to acquire partial discharge data generated in at least one switchboard, and a noise sensor provided in any one of the plurality of switchboards to acquire noise data to be differentiated from the partial discharge data acquired from the at least one partial discharge sensor, and it can be applied to other exemplary embodiments.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: April 9, 2024
    Assignee: LS ELECTRIC CO., LTD.
    Inventors: Chang Hwan Jin, Jong Ung Choi, Hyun Ho Kwon, Gwang Goo Kang, Jin Ho Lee
  • Publication number: 20240109350
    Abstract: The present disclosure relates to a portable printer including a main body in a portable form which is capable of accommodating a cartridge having a nozzle for delivering a printing material to a target having a soft or hard surface, a seating part which is provided to be exposed to an outside from a lower portion of the main body to face the surface of the target and at least partially surrounds the nozzle, a roller provided respectively at the front and rear of the nozzle at the lower portion of the main body with respect to a direction in which the main body moves along the surface of the target to deliver the printing material to the target, and a printing adjustment unit configured to adjust a height difference between the nozzle and the roller to adjust a height difference between the nozzle and the surface of the target.
    Type: Application
    Filed: October 20, 2022
    Publication date: April 4, 2024
    Applicant: LG HOUSEHOLD & HEALTH CARE LTD.
    Inventors: Chang Hwan HYUN, Ji Hee LEE, Kang Ug LEE, Sung Hyoun JANG, Hyeon Jin KWEON, Hae Na CHEONG, Ji Hee JEONG, Jung Yong LEE, Ha Young KIM
  • Patent number: 11943985
    Abstract: Discussed are a light-emitting device and a light-emitting display device having improved efficiency and increased lifespan. A plurality of stacks is provided between an anode and a cathode for at least a subpixel to emit a predetermined color, and emissive layers in different stacks include the same color-based materials having different luminous properties.
    Type: Grant
    Filed: June 7, 2021
    Date of Patent: March 26, 2024
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Jin Ho Park, Kyu Il Han, Chang Hwan Kwak, Dong Hyeok Lim, Hwa Yong Shin, Ji Hyung Lee
  • Patent number: 11940932
    Abstract: Provided is an operating method of a storage device. The method includes providing temperature information of each of a plurality of volatile memory devices in the storage device to a host device; and receiving a setting command related to a refresh operation of the plurality of volatile memory devices from the host device, wherein the plurality of volatile memory devices are classified into groups based on temperature information, and wherein the setting command indicates a number of rows of the plurality of volatile memory devices to be refreshed differently for each of the groups based on the temperature information.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: March 26, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Doo Hwan Oh, Seung-Hun Lee, Jin Hun Jeong, Chang Ho Yun, Kyung-Hee Han
  • Publication number: 20240076528
    Abstract: An object of the invention is to provide a flame retardant coating composition that can be applied on the surface of a product to increase flame retardancy while maintaining adhesiveness. In order to achieve the above object, the first aspect of the invention may provide a flame retardant coating composition including a siloxane binder containing at least one of an epoxy group or a dimethyl group and a phenyl group, and a phosphorus-based flame retardant.
    Type: Application
    Filed: September 1, 2023
    Publication date: March 7, 2024
    Inventors: Chang Ho LEE, Ki Hwan AN
  • Publication number: 20240076508
    Abstract: A first task of the invention is to provide a flame-retardant flexible coating composition for a coating layer applied onto a surface of a product to satisfy both high flame retardancy and high flexibility. In an effort to achieve the task, a first aspect of the invention may provide a flame-retardant coating composition including a siloxane binder containing at least any one of an epoxy group or a dimethyl group and a phenyl group, and a phosphorus-based flame retardant.
    Type: Application
    Filed: February 3, 2023
    Publication date: March 7, 2024
    Inventors: Chang Ho LEE, Ki Hwan AN
  • Patent number: 11920707
    Abstract: A sealed sleeve installed at an insertion coupling portion in a state in which a first pipe and a second pipe are insertion coupled to each other in order to seal couple the first pipe having a first outer diameter and a first inner diameter and the second pipe having a second outer diameter and a second inner diameter larger than the first outer diameter includes: a pillar shaped-main body having a main body central shaft; a through-hole formed using the main body central shaft as a central shaft on the main body and having an inlet as a second pipe side opening in an installation state and an outlet as a first pipe side opening in an installation state, wherein in the through-hole, a pressing portion that applies a sealing pressure to the insertion coupling portion is formed in a portion of an inner wall, and an inner diameter of the pressing portion is smaller than the second outer diameter.
    Type: Grant
    Filed: June 14, 2021
    Date of Patent: March 5, 2024
    Assignees: HANATECH CO., LTD., AIM TECH CO., LTD.
    Inventors: Chang Hwan Bae, Hyo Sang Lee
  • Patent number: 11912910
    Abstract: A conductive film laminate according to an embodiment of the present disclosure includes a carrier substrate, a conductive film liner on the carrier substrate, and a conductive adhesive film formed on the conductive film liner. The conductive film liner and the conductive adhesive film may form a cut pattern which does not cover the entire carrier substrate. The conductive adhesive film having a narrow width can be stably supplied on the carrier substrate. The conductive adhesive film may be used as an anisotropic conductive film for a bonding process of a touch sensor.
    Type: Grant
    Filed: March 25, 2021
    Date of Patent: February 27, 2024
    Assignee: DONGWOO FINE-CHEM CO., LTD.
    Inventors: Hyuk Hwan Kwon, Sun Kwon Ahn, Chang Yong Lee
  • Patent number: 11763066
    Abstract: A method determines a degree of compatibility of a web content with a vehicle display device. The method includes steps of: (a) the compatibility-determining server generating a specific render tree by referring to specific web content information; (b) the compatibility-determining server determining whether the specific web page is compatible with the vehicle display device according to a verifying scenario, wherein the verifying scenario is configured as a predetermined program by referring to at least part of (i) at least one first component included in the specific render tree and (ii) at least one second component included in the specific specification information; and (c) in response to determining that the specific web page is compatible, the compatibility-determining server performing or supporting another device to perform a process of displaying the specific web page on a display of the vehicle display device.
    Type: Grant
    Filed: November 15, 2022
    Date of Patent: September 19, 2023
    Inventors: Chang Hwan Lee, Young Min Kim
  • Patent number: 11692890
    Abstract: A torque index sensor including a substrate; a first cover which accommodates the circuit board; a first hall sensor and a second hall sensor which are disposed on the circuit board; a magnet seating member which is coupled to the stator; a second magnet which is coupled to the magnet seating member; and a second cover made of a metal material coupled with the first cover. Further, the magnet seating member and the second magnet are disposed between the first cover and the second cover, the second cover comprises: an upper plate on which a through hole is formed; and a side plate which extends in the rotational axis direction from the upper plate, and the side plate comprises a groove formed at a position corresponding to the hall sensor.
    Type: Grant
    Filed: May 4, 2021
    Date of Patent: July 4, 2023
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Chang Hwan Lee, Sung Wook Byun
  • Publication number: 20230169258
    Abstract: A method determines a degree of compatibility of a web content with a vehicle display device. The method includes steps of: (a) the compatibility-determining server generating a specific render tree by referring to specific web content information; (b) the compatibility-determining server determining whether the specific web page is compatible with the vehicle display device according to a verifying scenario, wherein the verifying scenario is configured as a predetermined program by referring to at least part of (i) at least one first component included in the specific render tree and (ii) at least one second component included in the specific specification information; and (c) in response to determining that the specific web page is compatible, the compatibility-determining server performing or supporting another device to perform a process of displaying the specific web page on a display of the vehicle display device.
    Type: Application
    Filed: November 15, 2022
    Publication date: June 1, 2023
    Applicant: Obigo Inc.
    Inventors: Chang Hwan LEE, Young Min KIM
  • Patent number: 11626306
    Abstract: A method for analyzing a semiconductor device includes repeatedly etching an entire surface of a wafer at a same etch rate by a target depth to expose a next surface of the wafer. The method includes obtaining two-dimensional structure information from each repeatedly etched surface of the wafer and serially stacking the repeatedly obtained two-dimensional structure information to generate a three-dimensional image.
    Type: Grant
    Filed: February 25, 2022
    Date of Patent: April 11, 2023
    Assignee: SK hynix Inc.
    Inventors: Jin Hee Han, Byoung Ho Lee, Chang Hwan Lee, Jung Min Lee, Seong Min Ma
  • Publication number: 20220297753
    Abstract: The present invention provides a sensing device comprising: a rotor; and a stator in which the rotor is disposed, wherein the stator comprises a stator tooth and a stator body, the stator tooth comprises a first stator tooth and a second stator tooth disposed inside the first stator tooth, at least one of the first stator tooth and the second stator tooth includes a tip protruding toward the center axis of the stator, and the tip is disposed at one surface of the stator body.
    Type: Application
    Filed: August 26, 2020
    Publication date: September 22, 2022
    Inventors: Chang Hwan LEE, Ye Won KWON
  • Publication number: 20220277975
    Abstract: A method for analyzing a semiconductor device includes repeatedly etching an entire surface of a wafer at a same etch rate by a target depth to expose a next surface of the wafer. The method includes obtaining two-dimensional structure information from each repeatedly etched surface of the wafer and serially stacking the repeatedly obtained two-dimensional structure information to generate a three-dimensional image.
    Type: Application
    Filed: February 25, 2022
    Publication date: September 1, 2022
    Applicant: SK hynix Inc.
    Inventors: Jin Hee HAN, Byoung Ho LEE, Chang Hwan LEE, Jung Min LEE, Seong Min MA
  • Patent number: 11385077
    Abstract: An embodiment provides a sensing device comprising: a first cover; a second cover coupled with the first cover; a rotor disposed at the second cover; a first magnet disposed between the second cover and the rotor; a stator disposed between the first magnet and the second cover; a seating part disposed between the first cover and the rotor; a second magnet disposed on the seating part; a circuit board disposed on a bottom surface of the second cover; and a first hall sensor and a second hall sensor disposed on the circuit board, wherein the first cover comprises an upper plate having an opening and a side plate extending downward from the upper plate, and the side plate of the first cover comprises a first groove formed at a position corresponding to the second hall sensor and a second groove spaced apart from the first groove.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: July 12, 2022
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Chang Hwan Lee, Sung Wook Byun
  • Patent number: 11295970
    Abstract: A system for analyzing a semiconductor device includes an etching module, an analyzing module, and a computing module. The etching module may repeatedly etch an entire surface of a wafer at a same etch rate to expose a next surface of the wafer at a next depth where an object to be analyzed exits. The analyzing module may obtain two-dimensional structure information from each repeatedly etched surface of the wafer. The computing module may serially stack the repeatedly obtained two-dimensional structure information to generate a three-dimensional image.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: April 5, 2022
    Assignee: SK hynix Inc.
    Inventors: Jin Hee Han, Byoung Ho Lee, Chang Hwan Lee, Jung Min Lee, Seong Min Ma
  • Publication number: 20210262880
    Abstract: A torque index sensor may be provided which comprises: a substrate; a first cover which accommodates the circuit board; a first hall sensor and a second hall sensor which are disposed on the circuit board; a magnet seating member which is coupled to the stator; a second magnet which is coupled to the magnet seating member; and a second cover made of a metal material coupled with the first cover, wherein the magnet seating member and the second magnet are disposed between the first cover and the second cover, wherein the second cover comprises: an upper plate on which a through hole is formed; and a side plate which extends in the rotational axis direction from the upper plate, and wherein the side plate comprises a groove formed at a position corresponding to the hall sensor.
    Type: Application
    Filed: May 4, 2021
    Publication date: August 26, 2021
    Applicant: LG INNOTEK CO., LTD.
    Inventors: Chang Hwan LEE, Sung Wook BYUN
  • Patent number: 11045990
    Abstract: The present invention relates to a three-dimensional (3D) pen with a novel structure which enables filaments having various colors to be easily selected and used. According to the 3D pen according to the present invention, a user laterally rotates the adjustment lever (25) to allow the driving motor (24) to be connected to different transfer rollers (22), thereby selectively transferring and discharging a plurality of different filaments (1) forward. Therefore, the 3D pen has a very simple structure and has an advantage in that the filaments (1) having various colors can be easily selected to manufacture objects having various colors.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: June 29, 2021
    Inventor: Chang Hwan Lee
  • Patent number: 11022510
    Abstract: A torque index sensor may be provided which comprises: a substrate; a first cover which accommodates the circuit board; a first hall sensor and a second hall sensor which are disposed on the circuit board; a magnet seating member which is coupled to the stator; a second magnet which is coupled to the magnet seating member; and a second cover made of a metal material coupled with the first cover, wherein the magnet seating member and the second magnet are disposed between the first cover and the second cover, wherein the second cover comprises: an upper plate on which a through hole is formed; and a side plate which extends in the rotational axis direction from the upper plate, and wherein the side plate comprises a groove formed at a position corresponding to the hall sensor.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: June 1, 2021
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Chang Hwan Lee, Sung Wook Byun
  • Patent number: D1003946
    Type: Grant
    Filed: February 17, 2022
    Date of Patent: November 7, 2023
    Assignee: Netmarble Corporation
    Inventor: Chang Hwan Lee