Patents by Inventor Chang-Hwan Park

Chang-Hwan Park 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: 20220181659
    Abstract: A fault diagnostic apparatus for a fuel cell electric vehicle and a method therefor are provided. The apparatus includes: a main relay connected to a fuel cell stack; a power converter connected to the main relay; a heater relay connected to the fuel cell stack and the main relay at one end and connected to a cathode oxygen depletion (COD) heater at the other end; and a fuel cell control unit (FCU) connected with the main relay, the power converter, and the heater relay. The FCU diagnoses a fault of the main relay based on an amount of change in stack voltage according to control to turn off and on the heater relay and a power of the power converter according to variable control of a voltage of the power converter, when the vehicle enters a shutdown sequence, and outputs the diagnosed result.
    Type: Application
    Filed: September 9, 2021
    Publication date: June 9, 2022
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Min Taek Kim, Chang Hwan Ye, Soon Gil Kweon, Hyo Jin Park
  • Patent number: 11339196
    Abstract: The present invention relates to a cell therapeutic agent comprising a stem cell expressing Lin28, a pharmaceutical composition comprising a stem cell expressing Lin28 for the prevention or treatment of a neurological disorder, a bone disorder, a muscular system disorder, an epithelium-related disorder or a blood-related disorder, and a method for treating a neurological disorder, a bone disorder, a muscular system disorder, an epithelium-related disorder or a blood-related disorder using the composition. A stem cell excellent in terms of differentiation potency to various tissue cells and renewal ability can be prepared by introducing Lin28, which regulates an embryonic development procedure, or a vector expressing Lin28 during stem cell culturing, and by culturing the cell.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: May 24, 2022
    Assignee: Industry-University Cooperation Foundation Hanyang University
    Inventors: Sang-Hun Lee, Yong Hee Rhee, Chang-Hwan Park, Mi-Yoon Chang, Yanuar Alan Sulistio, Ji Yun Ko
  • Publication number: 20220157226
    Abstract: A display device includes a power supply to supply a first initialization power source to the pixels through a first initialization and to supply a second initialization power source to the pixels through a second power line.
    Type: Application
    Filed: January 27, 2022
    Publication date: May 19, 2022
    Inventors: Kyong Hwan OH, Jin Tae JEONG, Ji Hyun KA, Won Kyu KWAK, Hyung Jun PARK, Chang Soo PYON, Ji Eun LEE, Hai Jung IN, Won Mi HWANG
  • Publication number: 20220085963
    Abstract: The present disclosure provides a method for receiving system information in a wireless communication system supporting a TDD narrowband. More specifically, a method performed by a terminal includes receiving first system information from a base station through an anchor carrier, the first system information including operation mode information on an operation mode of the system; determining a location of a non-anchor carrier for receiving second system information based on the operation mode information; and receiving the second system information from the base station through the non-anchor carrier, in which the operation mode information is configured in a guard band or an in-band. In this way, SIB1-NB is also transmitted and received on the non-anchor carrier.
    Type: Application
    Filed: March 25, 2019
    Publication date: March 17, 2022
    Inventors: Chang Hwan PARK, Seokmin SHIN, Seunggye HWANG, Joonkui AHN, Suckchel YANG
  • Publication number: 20210371864
    Abstract: The present specification relates to an astrocyte-specific nucleic acid aptamer and a use thereof. The astrocyte-specific nucleic acid aptamer, according to the disclosure in the present specification, is a DNA aptamer.
    Type: Application
    Filed: October 15, 2019
    Publication date: December 2, 2021
    Applicant: IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)
    Inventors: Eun-Song LEE, Miso KIM, Jin Saem LEE, Chang-Hwan PARK, Young-Pil KIM, Eun Hye LEE
  • Patent number: 11122124
    Abstract: A wireless communication controlling apparatus for installing wireless Internet of an Internet of Things device is provided. There is provided a wireless communication controlling apparatus which supports the setup of an IoT device in connection with a user terminal based on an application, and if it fails, supports the setup of wireless Internet of the IoT device in connection with the user terminal based on an AP mode. A wireless communication controlling apparatus that does not support the above process supports easy setup based on a concurrent mode of a provision AP.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: September 14, 2021
    Assignee: Dialog Semiconductor Korea Inc.
    Inventor: Chang Hwan Park
  • Patent number: 10986677
    Abstract: Disclosed are a method and device for easily connecting to AP in WLAN. An embodiment provides a method for easily connecting to AP in WLAN to enable an IoT station to easily input connection information such as SSID, password, other information, and the like, for connecting the IoT station to the AP, and a device thereof.
    Type: Grant
    Filed: August 4, 2019
    Date of Patent: April 20, 2021
    Assignee: Dialog Semiconductor Korea Inc.
    Inventors: Ji Young Jung, Chong Hoon Lee, Yong Jin Lee, Chang Hwan Park, Jin Wook Jeong
  • Patent number: 10945207
    Abstract: A beacon signal processing system of reducing wake-up frequency periodically receives a beacon signal from an access point. The beacon signal processing system, according to a data transfer type of a traffic indication message contained in the beacon signal, maintains a sleep mode or only wakes up part of modules of hardware and software necessary for communication for processing.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: March 9, 2021
    Assignee: Dialog Semiconductor Korea Inc.
    Inventors: Won Man Kim, Chang Hwan Park
  • Patent number: 10912022
    Abstract: The present disclosure discloses a power saving optimization method and device for an access point of a wireless local area network. The present embodiment discloses a power saving optimization method and device for optimizing the weak wakeup interval, a value of the weak awake time period, and a predicted value of power consumption between a station and an access point associated, in order to optimize power saving when the station performs operations in a low power mode, so as to maintain a sleep mode over a long period of time to a maximum extent without data loss in the low power mode.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: February 2, 2021
    Assignee: Dialog Semiconductor Korea Inc.
    Inventors: Jae Ho Kim, Chang Hwan Park, Jeong Hwan Lee
  • Publication number: 20200288331
    Abstract: Disclosed are a method and device for easily connecting to AP in WLAN. An embodiment provides a method for easily connecting to AP in WLAN to enable an IoT station to easily input connection information such as SSID, password, other information, and the like, for connecting the IoT station to the AP, and a device thereof.
    Type: Application
    Filed: August 4, 2019
    Publication date: September 10, 2020
    Inventors: Ji Young JUNG, Chong Hoon LEE, Yong Jin LEE, Chang Hwan PARK, Jin Wook JEONG
  • Patent number: 10772041
    Abstract: A beacon signal minimization method and a beacon signal processing system utilizing a changed beacon element periodically receives a beacon signal from an access point and maintains network connectivity in a sleep mode, or only wakes up modules of hardware and software necessary for communication, by comparing whether an information element contained in the beacon signal is different from information stored in advance.
    Type: Grant
    Filed: January 2, 2019
    Date of Patent: September 8, 2020
    Assignee: Dialog Semiconductor Korea Inc.
    Inventors: Won Man Kim, Chang Hwan Park
  • Publication number: 20200186604
    Abstract: A wireless communication controlling apparatus for installing wireless Internet of an Internet of Things device is provided. There is provided a wireless communication controlling apparatus which supports the setup of an IoT device in connection with a user terminal based on an application, and if it fails, supports the setup of wireless Internet of the IoT device in connection with the user terminal based on an AP mode. A wireless communication controlling apparatus that does not support the above process supports easy setup based on a concurrent mode of a provision AP.
    Type: Application
    Filed: November 12, 2019
    Publication date: June 11, 2020
    Applicant: FCI Inc.
    Inventor: Chang Hwan Park
  • Publication number: 20190349851
    Abstract: The present disclosure discloses a power saving optimization method and device for an access point of a wireless local area network. The present embodiment discloses a power saving optimization method and device for optimizing the weak wakeup interval, a value of the weak awake time period, and a predicted value of power consumption between a station and an access point associated, in order to optimize power saving when the station performs operations in a low power mode, so as to maintain a sleep mode over a long period of time to a maximum extent without data loss in the low power mode.
    Type: Application
    Filed: May 10, 2019
    Publication date: November 14, 2019
    Inventors: Jae Ho KIM, Chang Hwan PARK, Jeong Hwan LEE
  • Publication number: 20190215771
    Abstract: A beacon signal processing system of reducing wake-up frequency periodically receives a beacon signal from an access point. The beacon signal processing system, according to a data transfer type of a traffic indication message contained in the beacon signal, maintains a sleep mode or only wakes up part of modules of hardware and software necessary for communication for processing.
    Type: Application
    Filed: January 4, 2019
    Publication date: July 11, 2019
    Inventors: Won Man KIM, Chang Hwan PARK
  • Publication number: 20190208469
    Abstract: A beacon signal minimization method and a beacon signal processing system utilizing a changed beacon element periodically receives a beacon signal from an access point and maintains network connectivity in a sleep mode, or only wakes up modules of hardware and software necessary for communication, by comparing whether an information element contained in the beacon signal is different from information stored in advance.
    Type: Application
    Filed: January 2, 2019
    Publication date: July 4, 2019
    Inventors: Won Man KIM, Chang Hwan PARK
  • Publication number: 20190185812
    Abstract: The present invention relates to a method of differentiating neural stem cells or neural precursor cells into dopamine neurons and more particularly, a method of differentiating into dopamine neurons, in which chromosomal stability is maintained by transfecting neural stem cells or neural precursor cells with mRNA of a dopamine neuron-inducing transcription factor under time-based control. The method of differentiating into dopamine neurons, according to the present invention, may enable preparation of mature and functional dopamine neurons having chromosomal stability by synthesizing a dopamine neuron-inducing transcription factor into a mRNA form, which has no risk of genetic modification, and transfecting the synthetic mRNA, unlike existing methods using retroviral vectors, and thus may be usefully used in the clinical field for the treatment of Parkinson's disease.
    Type: Application
    Filed: December 14, 2018
    Publication date: June 20, 2019
    Applicant: Industry-University Cooperation Foundation Hanyang University
    Inventors: Chang-Hwan PARK, Sang Mi Kim
  • Publication number: 20190010197
    Abstract: The present invention relates to a cell therapeutic agent comprising a stem cell expressing Lin28, a pharmaceutical composition comprising a stem cell expressing Lin28 for the prevention or treatment of a neurological disorder, a bone disorder, a muscular system disorder, an epithelium-related disorder or a blood-related disorder, and a method for treating a neurological disorder, a bone disorder, a muscular system disorder, an epithelium-related disorder or a blood-related disorder using the composition. A stem cell excellent in terms of differentiation potency to various tissue cells and renewal ability can be prepared by introducing Lin28, which regulates an embryonic development procedure, or a vector expressing Lin28 during stem cell culturing, and by culturing the cell.
    Type: Application
    Filed: July 13, 2018
    Publication date: January 10, 2019
    Inventors: Sang-Hun LEE, Yong Hee RHEE, Chang-Hwan PARK, Mi-Yoon CHANG, Yanuar Alan SULISTIO, Ji Yun KO
  • Publication number: 20150337856
    Abstract: Embodiments of the invention provide an electric blower, including a diffuser having a cover and an impeller sequentially disposed at one side in a shaft direction thereof, a front disposed at the other side in the shaft direction of the diffuser, and an elastic body mounted between the front and the diffuser to support the diffuser.
    Type: Application
    Filed: January 27, 2015
    Publication date: November 26, 2015
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Se Yeun HWANG, Sang Ook JUN, Kyung Hyun PARK, In Yeop JUNG, Seung On KANG, Chang Hwan PARK
  • Patent number: 8983695
    Abstract: The present invention relates to an electric vehicle and to a method for controlling same. The method for controlling the electric vehicle according to the present invention comprises the steps of: using first data to calculate a first torque value in a first memory; using second data to calculate a second torque value in a second memory having a memory address separate from the first memory; and comparing the first torque value and the second torque value, determining whether an abnormality exists in the torque calculations, and controlling the motion of the vehicle.
    Type: Grant
    Filed: August 1, 2011
    Date of Patent: March 17, 2015
    Assignee: LG Electronics Inc.
    Inventors: Chang Hwan Park, Byoung Sun Jeon
  • Patent number: 8980149
    Abstract: The present invention relates to a method and device for manufacturing artificial stone. More specifically, the method includes the steps of: (a) mixing two or more kinds of chips having different grain sizes with a raw material for artificial stone; (b) injecting the raw material for artificial stone mixed with the chips into a mold; (c) applying primary vibration using a vibration device such that the raw material is uniformly dispersed in the mold; (d) applying vacuum to eliminate bubbles in the raw material; and (e) molding artificial stone by applying a secondary vibration using the vibration device. According to the method and device for manufacturing artificial stone of the present invention, the deposition rate of chips exposed at a surface of artificial stone is maximized, and thus the external appearance of artificial stone can be more naturally expressed and resistance against abrasion and staining can be improved.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: March 17, 2015
    Assignee: LG Hausys, Ltd.
    Inventors: Hae-Seung Ko, Chang-Hwan Park