Patents by Inventor Chan Ahn

Chan Ahn 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: 12275397
    Abstract: A method of preventing a blind spot collision includes recognizing a reflector installed on a road using a front camera, determining whether at least one other vehicle image exists in the reflector, determining whether the at least one other vehicle is a preceding vehicle or an opposite vehicle through image analysis when the at least one other vehicle image exists in the reflector, generating a braking command when the at least one other vehicle is the preceding vehicle, and generating a steering torque for maintaining a lane when the at least one other vehicle is the opposite vehicle.
    Type: Grant
    Filed: October 17, 2022
    Date of Patent: April 15, 2025
    Assignee: Hyundai Mobis Co., Ltd.
    Inventor: Hyun Chan Ahn
  • Publication number: 20250115475
    Abstract: A dry hydrogen production device includes: a reactor to which water or vapor is not supplied; heating means configured to heat the reactor to 200 to 800° C.; a supply line for hydroxide of at least one of alkali and alkali earth connected to the reactor; a biomass supply line connected to the reactor; at least one carrier gas supply line connected to the reactor; a gas phase reaction product outflow line connected to the reactor, a solid-gas separator connected to the gas phase reaction product outflow line; and a gas separator connected to the solid-gas separator.
    Type: Application
    Filed: January 16, 2023
    Publication date: April 10, 2025
    Applicants: SK GAS CO., LTD., EWHA UNIVERSITY - INDUSTRY COLLABORATION FOUNDATION
    Inventors: Woo Jae KIM, Ung Gi HONG, Hyeong Chan AHN, Tae Hyeop KIM
  • Patent number: 12234680
    Abstract: A vehicle includes a camera to recognize at least one sign installed on a road and a controller to determine a type of the at least one sign, in a case in which the at least one sign corresponds to a road freezing sign based on referring to a memory, determine whether a temperature sensed by a temperature sensor installed outside the vehicle is a freezing danger temperature, and in a case in which the temperature sensed by the temperature sensor corresponds to the freezing danger temperature, determine whether a drive mode of the vehicle is set to a winter mode. The controller displays a winter mode automatic switching notification message through an instrument panel and to transmit a command for switching to the winter mode to a drive mode controller in a case in which the drive mode of the vehicle is not set to the winter mode.
    Type: Grant
    Filed: October 17, 2022
    Date of Patent: February 25, 2025
    Assignee: Hyundai Mobis Co., Ltd.
    Inventor: Hyun Chan Ahn
  • Patent number: 12123067
    Abstract: A ferritic stainless steel with improved expandability includes, in percent (%) by weight of the entire composition, Cr: 10 to 25%, N: 0.015% or less (excluding 0), Al: 0.005 t 0.04%, Nb: 0.1 to 0.6%, Ti: 0.1 to 0.5%, the remainder of iron (Fe) and other inevitable impurities, and satisfies the following equation (1): Z=X*Y?17??equation(1).
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: October 22, 2024
    Assignee: POSCO CO., LTD
    Inventors: Il Chan Jung, Young Min Seo, Deok Chan Ahn
  • Publication number: 20240299460
    Abstract: The present invention relates to a method of manufacturing an animal cartilage-derived injectable composition, an injectable composition manufactured by the method, and a use thereof. The injectable composition of the present invention includes a collagen-containing biomaterial in a formulation injectable into joint cavity and may induce cartilage tissue regeneration by repairing tissue via direct injection to a target region without surgical incision. In addition, the injectable composition may be used as a therapeutic agent for arthritis by alleviating osteoarthritis not only because the animal cartilage-derived extracellular matrix contained in the injectable composition protects articular cartilage tissue but also because an environment capable of regenerating damaged articular tissue is created by inducing differentiation of intra-articular stem cells into chondrocytes.
    Type: Application
    Filed: November 26, 2021
    Publication date: September 12, 2024
    Inventors: Kyung Sun Kang, Seunghee Lee, Jong Chan Ahn, Mijin Kim
  • Patent number: 11986344
    Abstract: The present invention relates to a portable probe for photoacoustic tomography, capable of performing line-by-line scanning or area-by-area scanning by using a small number of light inputs; and a real-time photoacoustic tomography device. The probe for photoacoustic tomography includes: a lens receiving light inputs from an optical fiber so as to make the same proceed as small diameter parallel light; a Powell lens receiving the small diameter parallel light and generating a line beam of a predetermined thickness, and allowing energy dispersed on a line to be uniform on the entire line; a lens making the line beam pass therethrough such that the line beam has a predetermined width and a reduced thickness so as to be line-focused at a target area; an acoustic reflection glass for separating, from a light path, an acoustic wave outputted from the target area; and an acoustic measurement unit for measuring acoustic strength.
    Type: Grant
    Filed: July 29, 2022
    Date of Patent: May 21, 2024
    Assignee: PUKYONG NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION
    Inventors: Chul Ho Oak, Eun Kee Park, Jung-Eun Park, Yeh Chan Ahn
  • Patent number: 11959159
    Abstract: The austenitic stainless steel that does not cause defects such as aging crack or delayed fracture even after the expansion and curling process of 5 steps or more is disclosed. In accordance with an aspect of the present disclosure, an austenitic stainless steel with excellent pipe expanding workability and aging crack resistance includes, in percent (%) by weight of the entire composition, C: 0.01 to 0.04%, Si: 0.1 to 1.0%, Mn: 0.1 to 2.0%, Cr: 16 to 20%, Ni: 6 to 10%, Cu: 0.1 to 2.0%, Mo: 0.2% or less, N: 0.035 to 0.07%, the remainder of iron (Fe) and other inevitable impurities, and the C+N satisfies 0.1% or less, the product of the Md30 (° C.) value and average grain size (?m) satisfies less than ?500.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: April 16, 2024
    Assignee: POSCO CO., LTD
    Inventors: Sang Seok Kim, Deok Chan Ahn, Mi-Nam Park, Hyun Woong Min, Yung Min Kim
  • Patent number: 11804145
    Abstract: A method for providing learning information is provided. The method includes the steps of: combining achievements of one or more learner groups for a plurality of learning units to derive learning achievement characteristic information of the one or more learner groups; combining achievements of a target learner for the plurality of learning units to derive learning achievement characteristic information of the target learner; comparing the learning achievement characteristic information of the target learner and the learning achievement characteristic information of the one or more learner groups; and providing learning information to the target learner according to a learning path of the one or more learner groups, on the basis of a result of the comparison.
    Type: Grant
    Filed: July 24, 2020
    Date of Patent: October 31, 2023
    Assignee: CLASSCUBE CO., LTD.
    Inventor: Seong Chan Ahn
  • Publication number: 20230321153
    Abstract: The present invention relates to a method of manufacturing an animal cartilage-derived injectable composition, an injectable composition manufactured by the method, and a use thereof. The injectable composition of the present invention includes a collagen-containing biomaterial in a formulation injectable into joint cavity and may induce cartilage tissue regeneration by repairing tissue via direct injection to a target region without surgical incision. In addition, the injectable composition may be used as a therapeutic agent for arthritis by alleviating osteoarthritis not only because the animal cartilage-derived extracellular matrix contained in the injectable composition protects articular cartilage tissue but also because an environment capable of regenerating damaged articular tissue is created by inducing differentiation of intra-articular stem cells into chondrocytes.
    Type: Application
    Filed: June 13, 2023
    Publication date: October 12, 2023
    Inventors: Kyung Sun Kang, Seunghee Lee, Jong Chan Ahn, Mijin Kim
  • Patent number: 11771315
    Abstract: Disclosed is a mobile colposcopy device for early diagnosis of cervical cancer, which includes an insertion unit which is inserted into the vagina of a woman, has a penetrating hole formed in one end coming into contact with the uterus, and is provided with a capturing path communicating with the penetrating hole, a capturing unit which is provided in the insertion unit so as to capture the cervix through the capturing path, and a lighting unit which is provided on the capturing path of the insertion unit and irradiates a lighting to the cervix through the penetrating hole. According to the present disclosure, the mobile colposcopy device for early diagnosis of cervical cancer can be simply and easily used so as to perform cervical cancer screening using a mobile colposcopy without environmental constraints including hospitals and allows women to early diagnose cervical cancer.
    Type: Grant
    Filed: September 21, 2021
    Date of Patent: October 3, 2023
    Assignees: Pukyong National University Industry—University Cooperation Foundation, KOSIN UNIVERSITY INDUSTRY—ACADEMY COOPERATION
    Inventors: Yeh-Chan Ahn, Daa Young Kwon, Yi Keun Kim, Chul Ho Oak, Hang Goo Yun, Sung Won Kim
  • Patent number: 11740038
    Abstract: A ferritic stainless steel for an exhaust system heat exchanger having excellent sound absorption properties and a method for manufacturing the same are disclosed. The ferritic stainless steel for an exhaust system heat exchanger having excellent sound absorption properties includes, by weight percent, 0.001 to 0.01% of C, 0.001 to 0.01% of N, 0.2 to 1% of Si, 0.1 to 2% of Mn, 10 to 30% of Cr, 0.001 to 0.1% of Ti, 0.001 to 0.015% of Al, 0.3 to 0.6% of Nb, 0.01 to 2.5% of Mo, and the balance of Fe and other unavoidable impurities, wherein the number of inclusions existing in a ferrite matrix and satisfying the following Formula 1 is 5 ea/mm2 or more.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: August 29, 2023
    Assignee: POSCO CO., LTD
    Inventors: Il Chan Jung, Jong Chul Kim, Jae Hong Shim, Deok Chan Ahn, Jin Suk Kim
  • Publication number: 20230174057
    Abstract: A method of preventing a blind spot collision includes recognizing a reflector installed on a road using a front camera, determining whether at least one other vehicle image exists in the reflector, determining whether the at least one other vehicle is a preceding vehicle or an opposite vehicle through image analysis when the at least one other vehicle image exists in the reflector, generating a braking command when the at least one other vehicle is the preceding vehicle, and generating a steering torque for maintaining a lane when the at least one other vehicle is the opposite vehicle.
    Type: Application
    Filed: October 17, 2022
    Publication date: June 8, 2023
    Applicant: HYUNDAI MOBIS CO., LTD.
    Inventor: Hyun Chan AHN
  • Publication number: 20230175304
    Abstract: A method of controlling a vehicle includes receiving information related to a plurality of signs of different types installed on a road, determining whether each of the plurality of signs is related to an external temperature of the vehicle or an external wind speed of the vehicle, and calculating distance information between the plurality of the signs when all of the signs are related to the external wind speed of the vehicle.
    Type: Application
    Filed: October 17, 2022
    Publication date: June 8, 2023
    Applicant: HYUNDAI MOBIS CO., LTD.
    Inventor: Hyun Chan AHN
  • Patent number: 11634801
    Abstract: Provided is a ferritic stainless steel for an exhaust system heat exchanger and a method of manufacturing the same. The ferritic stainless steel includes, in percent (%) by weight of the entire composition, 0.003 to 0.1% of carbon (C), 0.01 to 2.0% of silicon (Si), 0.01 to 1.5% of manganese (Mn), 0.05% or less of phosphorus (P), 0.005% or less of sulfur (S), 10 to 30% of chromium (Cr), 0.001 to 0.10% of titanium (Ti), 0.001 to 0.15% of aluminum (Al), 0.003 to 0.03% of nitrogen (N), 0.3 to 0.6% of niobium (Nb), 0.01 to 2.5% of molybdenum (Mo), and the remainder of iron (Fe) and other inevitable impurities, wherein TiN precipitates having a size of 0.1 ?m or more are distributed in a surface layer of a ferrite matrix at a concentration of 2.5*104 ea/mm2 or less.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: April 25, 2023
    Assignee: POSCO CO., LTD
    Inventors: Il Chan Jung, Jong Chul Kim, Jae Hong Shim, Deok Chan Ahn, Jin Suk Kim
  • Patent number: 11627880
    Abstract: The present invention relates to a real-time parathyroid imaging apparatus including: a light source including an excitation filter capable of exciting parathyroid glands; and a camera including an image sensor and an emission filter of which a transmissivity ratio between a visible light region and a near-infrared emission wavelength region is N:1 (here, N<1). Through the present invention, a system may be implemented whereby a surgeon may acquire, in real-time during an operation, an autofluorescence image of the parathyroid glands by using a near-infrared light source, and an auto focus function may be used, and visible light and near-infrared autofluorescence images may be simultaneously fused and acquired without having to turn off the lights in an operating room.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: April 18, 2023
    Assignees: PUKYONG NATIONAL UNIVERSITY INDUSTRYUNIVERSITY COOPERATION FOUNDATION, UNIST (ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)
    Inventors: Yeh-Chan Ahn, Sung Chul Bae
  • Patent number: 11609425
    Abstract: Augmented reality glasses with auto coregistration of an invisible field on visible reality which allows eyes to recognize a real space and precisely performs coregistration on only diagnosis and treatment information of invisible light, which is emitted from a specific area, to the real space.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: March 21, 2023
    Assignee: Pukyong National University Industry-University Cooperation Foundation
    Inventor: Yeh-Chan Ahn
  • Patent number: 11589802
    Abstract: The present invention relates to a real-time parathyroid imaging device, and a real-time parathyroid imaging device for displaying only a parathyroid in a thyroid with a separate mark, the real-time parathyroid imaging device including: a light source configured to emit light to a thyroid and excite a parathyroid; a detector configured to detect an emission spectrum of the parathyroid excited and emitted by the light source; an excitation filter disposed in front of the light source; and an emission filter disposed in front of the detector. When central Compartment Neck Dissection (CCND) for thyroidectomy is performed, the present invention clearly marks a parathyroid by an autofluorescent image, thereby allowing a surgeon to more simply and safely perform the CCND while leaving the parathyroid.
    Type: Grant
    Filed: September 4, 2017
    Date of Patent: February 28, 2023
    Assignee: PUKYONG NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION
    Inventors: Yeh-Chan Ahn, Sung-Won Kim, Kang-Dae Lee, Hyoung-Shin Lee, Chul-Ho Oak, Seo-Hyun Song, Hyun-Wook Kang, Joon-Shik You
  • Publication number: 20230051601
    Abstract: Disclosed is a method for producing a stem cell with enhanced efficacy, a stem cell produced thereby, and a method for treating a disease using the same. According to the present invention, sizes of stem cells may be reduced and proliferation ability, differentiation potency, migration ability, and angiogenic potential of stem cells may be significantly enhanced by applying a culturing method provided herein. Thus the present invention may be usefully applied to development of therapeutic agents using stem cells.
    Type: Application
    Filed: December 16, 2020
    Publication date: February 16, 2023
    Inventors: Mijin Kim, Jong Chan Ahn, Seunghee Lee, Kwang-won Seo, Kyung-sun Kang
  • Patent number: 11559248
    Abstract: The present invention relates to a parathyroid sensing system, and includes: a modulator for generating a modulation signal having a predetermined frequency; a lock-in amplifier and a light source which receive information on the modulation signal; an excitation filter for transmitting, among light emitted from the light source, only excitation light that excites parathyroid glands; an emission filter connected to a probe and selectively transmitting only fluorescence emitted from the parathyroid glands; a near-infrared sensor for sensing the autofluorescence that has passed through the emission filter, and converting the sensed autofluorescence into an electric signal; and a speaker for generating an alarm through the electric signal. Through the present invention, the locations of the parathyroid glands may be precisely identified even when lights are turned on in an operating room, and convenience may be provided by alerting a surgeon by means of an alarm when the parathyroid glands are detected.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: January 24, 2023
    Assignees: PUKYONG NATIONAL UNIVERSITY INDUSTRYUNIVERSITY COOPERATION FOUNDATION, UNIST (ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)
    Inventors: Yeh-Chan Ahn, Sung Chul Bae
  • Publication number: 20220361842
    Abstract: The present invention relates to a portable probe for photoacoustic tomography, capable of performing line-by-line scanning or area-by-area scanning by using a small number of light inputs; and a real-time photoacoustic tomography device. The probe for photoacoustic tomography includes: a lens receiving light inputs from an optical fiber so as to make the same proceed as small diameter parallel light; a Powell lens receiving the small diameter parallel light and generating a line beam of a predetermined thickness, and allowing energy dispersed on a line to be uniform on the entire line; a lens making the line beam pass therethrough such that the line beam has a predetermined width and a reduced thickness so as to be line-focused at a target area; an acoustic reflection glass for separating, from a light path, an acoustic wave outputted from the target area; and an acoustic measurement unit for measuring acoustic strength.
    Type: Application
    Filed: July 29, 2022
    Publication date: November 17, 2022
    Applicant: PUKYONG NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION
    Inventors: Chul Ho OAK, Eun Kee PARK, Jung-Eun PARK, Yeh Chan AHN