Patents by Inventor Ji-Hyun Shim

Ji-Hyun Shim 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: 10900611
    Abstract: A system and a method for sensing hydrogen charge state of a fuel cell electric vehicle are provided. The system includes an infrared transmission unit that transmits a fuel door sensing infrared signal for sensing a fuel door opened while charging hydrogen and a nozzle sensing infrared signal for sensing a charging station-side hydrogen charging nozzle connected to a hydrogen charging inlet of a vehicle. An infrared reception unit receives the fuel door sensing infrared signal and thereafter, reflected on a fuel door and the nozzle sensing infrared signal transmitted from the infrared transmission unit and thereafter, reflected on the hydrogen charging nozzle. A controller determines that the vehicle is being charged with hydrogen when sensing an open state of the fuel door and a hydrogen charging inlet connection state of the hydrogen charging nozzle.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: January 26, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Ji Hyun Shim, Ki Ho Hwang, Hyung Ki Kim
  • Patent number: 10868315
    Abstract: A system for measuring pressure of an in-tank regulator includes a direct-pipe flow path which directly communicates with an inside of a high-pressure container, a high-pressure sensor, of which a portion is movable into the direct-pipe flow path, fastened to and separated from the direct-pipe flow path, and a shut-off valve disposed on the direct-pipe flow path between the high-pressure container and the high-pressure sensor, wherein when the high-pressure sensor is separated from the direct-pipe flow path, the direct-pie flow path is sealed by the shut-off valve.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: December 15, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Chang Ho Kim, Jang Ho Choi, Hyung Ki Kim, Ji Hyun Shim
  • Patent number: 10749192
    Abstract: A hydrogen consumption measuring method for a fuel cell system includes steps of: calculating an amount of hydrogen consumed for a representative section from a first pressure at a time when hydrogen is supplied into an anode and a second pressure at a time when the hydrogen is no longer supplied to the anode; and calculating a total amount of hydrogen consumed by accumulating amounts of hydrogen consumed from a plurality of sections.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: August 18, 2020
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Se Kwon Jung, Ho June Bae, Ji Hyun Shim, Hyung Ki Kim
  • Publication number: 20200172388
    Abstract: A gas pump identification system for identifying a gas pump through a non-contact type sensor provided in a vehicle and making payment may include acquiring, by a gas pump identification information acquirer disposed in a vehicle, identification information related to a gas pump from a gas pump identification information provider provided in a filling gun while the filling gun of the gas pump is inserted into a filling inlet of the vehicle, transmitting the acquired identification information to a terminal of the vehicle, and generating, by the terminal, order information based on the identification information and transmitting the order information to a payment server, wherein the gas pump identification information acquirer acquires the identification information from the gas pump identification information provider using a non-contact recognition method in a state in which the filling gun is inserted into the filling inlet.
    Type: Application
    Filed: July 23, 2019
    Publication date: June 4, 2020
    Inventors: Ki Tag Yoo, Ji Hyun Shim
  • Patent number: 10608265
    Abstract: A system for controlling low-temperature starting of a fuel cell vehicle includes a high-pressure hydrogen flow control valve controlling a flow of hydrogen supplied to a fuel cell stack. A fuel cell controller is configured to change and control an opening rate of the high-pressure hydrogen flow control valve when an internal temperature of the fuel cell stack is a reference value or less. When the opening rate of the high-pressure hydrogen flow control valve decreases, a pressure of the hydrogen passing through the high-pressure hydrogen flow control valve decreases to increase a temperature of the hydrogen which is supplied to the fuel stack.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: March 31, 2020
    Assignee: Hyundai Motor Company
    Inventors: Ji Hyun Shim, Chang Ho Kim, Sang Hyun Kim
  • Patent number: 10597686
    Abstract: The present disclosure relates to a protein having the activity of exporting O-acetylhomoserine and a novel modified protein thereof, a microorganism capable of producing O-acetylhomoserine with enhanced expression of the protein, and a method for producing O-acetylhomoserine using the microorganism.
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: March 24, 2020
    Assignee: CJ CHEILJEDANG CORPORATION
    Inventors: Jee Yeon Bae, Ji Hyun Shim, Hyun Ah Kim, Juhee Seo, Yong Uk Shin, Jae Hee Lee, Sang Kyoum Kim, So Young Kim
  • Publication number: 20190338322
    Abstract: The present disclosure relates to a protein having the activity of exporting O-acetylhomoserine and a novel modified protein thereof, a microorganism capable of producing O-acetylhomoserine with enhanced expression of the protein, and a method for producing O-acetylhomoserine using the microorganism.
    Type: Application
    Filed: July 17, 2019
    Publication date: November 7, 2019
    Applicant: CJ Cheiljedang Corporation
    Inventors: Jee Yeon BAE, Ji Hyun SHIM, Hyun Ah KIM, Juhee SEO, Yong Uk SHIN, Jae Hee LEE, Sang Kyoum KIM, So Young KIM
  • Patent number: 10468698
    Abstract: A method of eliminating leakage from a fuel tank valve includes when the leakage occurs, consuming fuel stored in a passage between a fuel tank and a stack in a state in which a tank valve is closed.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: November 5, 2019
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Ji Hyun Shim, Chang Ho Kim
  • Patent number: 10400256
    Abstract: The present disclosure relates to a protein having the activity of exporting O-acetylhomoserine and a novel modified protein thereof, a microorganism capable of producing O-acetylhomoserine with enhanced expression of the protein, and a method for producing O-acetylhomoserine using the microorganism.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: September 3, 2019
    Assignee: CJ CHEILJEDANG CORPORATION
    Inventors: Jee Yeon Bae, Ji Hyun Shim, Hyun Ah Kim, Juhee Seo, Yong Uk Shin, Jae Hee Lee, Sang Kyoum Kim, So Young Kim
  • Patent number: 10396378
    Abstract: A device and method for improving stack performance of a fuel cell system are provided. The device includes a fuel cell controller that operates a stack of a normal-pressure fuel cell system. When the fuel cell controller determines that an operating state of the stack is normal and a current intake air pressure is decreased as a result of monitoring the current intake air pressure, a current output, and an exterior air temperature of the stack, the fuel cell controller increases the amount of air to be supplied into the stack by adjusting a range of a theoretical air ratio which is a theoretical ratio of an air amount to a coolant temperature in the stack.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: August 27, 2019
    Assignee: Hyundai Motor Company
    Inventors: Hyo Jin Park, Sang Soo Eun, Ji Hyun Shim, Dae Jong Kim
  • Publication number: 20190113178
    Abstract: A system and a method for sensing hydrogen charge state of a fuel cell electric vehicle are provided. The system includes an infrared transmission unit that transmits a fuel door sensing infrared signal for sensing a fuel door opened while charging hydrogen and a nozzle sensing infrared signal for sensing a charging station-side hydrogen charging nozzle connected to a hydrogen charging inlet of a vehicle. An infrared reception unit receives the fuel door sensing infrared signal and thereafter, reflected on a fuel door and the nozzle sensing infrared signal transmitted from the infrared transmission unit and thereafter, reflected on the hydrogen charging nozzle. A controller determines that the vehicle is being charged with hydrogen when sensing an open state of the fuel door and a hydrogen charging inlet connection state of the hydrogen charging nozzle.
    Type: Application
    Filed: November 29, 2017
    Publication date: April 18, 2019
    Inventors: Ji Hyun Shim, Ki Ho Hwang, Hyung Ki Kim
  • Patent number: 10211471
    Abstract: A method of controlling purging in a hydrogen storage system includes determining the internal hydrogen purity of a hydrogen tank and adjusting a hydrogen purging cycle of the hydrogen tank depending on the determined internal hydrogen purity. An apparatus for controlling purging in a hydrogen storage system is also provided.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: February 19, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Ji Hyun Shim, Hyung Ki Kim, Sang Hyun Kim, Chang Ho Kim
  • Patent number: 10210732
    Abstract: An apparatus and a method of indicating safety of a hydrogen tank when a vehicle fire occurs are provided. The apparatus includes a hydrogen storing tank and a thermal pressure relief device (TPRD) mounted within a valve of the hydrogen storing tank. In addition, a controller is configured to detect a flow rate of hydrogen discharged from the hydrogen storing tank, using a sensor to determine whether the detected flow rate of discharged hydrogen is within a predetermined reference flow rate range. The controller is also configured to transmit a warning signal when the detected flow rate of discharged hydrogen is included within the predetermined reference flow rate range.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: February 19, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Chang Ho Kim, Sang Hyun Kim, Ji Hyun Shim
  • Patent number: 10112486
    Abstract: A device for detecting leakage of gas of a fuel cell vehicle includes a gas sensor configured to determine whether gas leaks based on a change in a temperature by a catalyst reaction and a vehicle control unit including a comparator configured to read a variation in temperature from the gas sensor, and configured to control a fuel cell vehicle. A power application state is maintained in the comparator in a power off state of the fuel cell vehicle. Power of the gas sensor is switched at regular periodic intervals. The comparator determines the variation in temperature measured by the gas sensor, and, when the variation in temperature exceeds a predetermined value, the power of the gas sensor is switched to normal power.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: October 30, 2018
    Assignee: Hyundai Motor Company
    Inventors: Hyeon Seok Ban, Ho June Bae, Ji Hyun Shim
  • Publication number: 20180205101
    Abstract: a fuel cell system without a high pressure line of a hydrogen supplying system, including a gas charging line formed between a gas charging station and a high pressure vessel charged with gas by the gas charging station, and a gas supplying line formed between the high pressure vessel and a stack, includes: a regulator provided in the gas supplying line; a solenoid valve provided in the gas supplying line between the regulator and the high pressure vessel; and a check valve provided in a bypass line connecting one point of the gas supplying line between the regulator and the solenoid valve and one point of the gas charging line.
    Type: Application
    Filed: November 22, 2017
    Publication date: July 19, 2018
    Inventors: Chang Ho KIM, Ji Hyun SHIM
  • Publication number: 20180175410
    Abstract: A system for measuring pressure of an in-tank regulator includes a direct-pipe flow path which directly communicates with an inside of a high-pressure container, a high-pressure sensor, of which a portion is movable into the direct-pipe flow path, fastened to and separated from the direct-pipe flow path, and a shut-off valve disposed on the direct-pipe flow path between the high-pressure container and the high-pressure sensor, wherein when the high-pressure sensor is separated from the direct-pipe flow path, the direct-pie flow path is sealed by the shut-off valve.
    Type: Application
    Filed: September 20, 2017
    Publication date: June 21, 2018
    Inventors: Chang Ho KIM, Jang Ho CHOI, Hyung Ki KIM, Ji Hyun SHIM
  • Publication number: 20180135086
    Abstract: The present disclosure relates to a protein having the activity of exporting O-acetylhomoserine and a novel modified protein thereof, a microorganism capable of producing O-acetylhomoserine with enhanced expression of the protein, and a method for producing O-acetylhomoserine using the microorganism.
    Type: Application
    Filed: June 3, 2016
    Publication date: May 17, 2018
    Inventors: Jee Yeon BAE, Ji Hyun SHIM, Hyun Ah KIM, Juhee SEO, Yong Uk SHIN, Jae Hee LEE, Sang Kyoum KIM, So Young KIM
  • Patent number: 9959724
    Abstract: An apparatus and a method of indicating safety of a hydrogen tank when a vehicle fire occurs are provided. The apparatus includes a hydrogen storing tank and a thermal pressure relief device (TPRD) mounted within a valve of the hydrogen storing tank. In addition, a controller is configured to detect a flow rate of hydrogen discharged from the hydrogen storing tank, using a sensor to determine whether the detected flow rate of discharged hydrogen is within a predetermined reference flow rate range. The controller is also configured to transmit a warning signal when the detected flow rate of discharged hydrogen is included within the predetermined reference flow rate range.
    Type: Grant
    Filed: December 14, 2014
    Date of Patent: May 1, 2018
    Assignee: Hyundai Motor Company
    Inventors: Chang Ho Kim, Sang Hyun Kim, Ji Hyun Shim
  • Publication number: 20180079309
    Abstract: A device for detecting leakage of gas of a fuel cell vehicle includes a gas sensor configured to determine whether gas leaks based on a change in a temperature by a catalyst reaction and a vehicle control unit including a comparator configured to read a variation in temperature from the gas sensor, and configured to control a fuel cell vehicle. A power application state is maintained in the comparator in a power off state of the fuel cell vehicle. Power of the gas sensor is switched at regular periodic intervals. The comparator determines the variation in temperature measured by the gas sensor, and, when the variation in temperature exceeds a predetermined value, the power of the gas sensor is switched to normal power.
    Type: Application
    Filed: December 15, 2016
    Publication date: March 22, 2018
    Applicant: HYUNDAI MOTOR COMPANY
    Inventors: Hyeon Seok Ban, Ho June Bae, Ji Hyun Shim
  • Publication number: 20180033274
    Abstract: An apparatus and a method of indicating safety of a hydrogen tank when a vehicle fire occurs are provided. The apparatus includes a hydrogen storing tank and a thermal pressure relief device (TPRD) mounted within a valve of the hydrogen storing tank. In addition, a controller is configured to detect a flow rate of hydrogen discharged from the hydrogen storing tank, using a sensor to determine whether the detected flow rate of discharged hydrogen is within a predetermined reference flow rate range. The controller is also configured to transmit a warning signal when the detected flow rate of discharged hydrogen is included within the predetermined reference flow rate range.
    Type: Application
    Filed: October 10, 2017
    Publication date: February 1, 2018
    Inventors: Chang Ho Kim, Sang Hyun Kim, Ji Hyun Shim