Patents by Inventor Jae Hwan Choi

Jae Hwan Choi 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: 20230256868
    Abstract: The present disclosure relates to a battery assisting apparatus and method for a fuel cell vehicle. An exemplary embodiment of the present disclosure provides a battery assisting apparatus for a fuel cell vehicle, including: a controller configured to determine an increase or decrease of driver's determination to accelerate based on a change rate of motor torque and a change rate of accelerator opening when a battery assistance mode is entered, and to release the battery assistance mode when the driver's determination to accelerate is decreased; and a storage configured to store data and algorithms driven by the controller.
    Type: Application
    Filed: October 21, 2022
    Publication date: August 17, 2023
    Inventors: Sang Chul Yeom, Seung Yoon Lee, Hyo Jun Kim, Jae Hwan Choi, Jong Seok Han, Jeong Kyu Park, Jae Hoon Jeong
  • Patent number: 11631874
    Abstract: Disclosed are a control system for a fuel cell including a fuel cell configured to receive a fuel gas and an oxidation gas and generate electric power, a current controller configured to control an output current output from the fuel cell, based on a demanded current of the fuel cell, while maintaining an output voltage output from the fuel cell at a preset voltage or more, and a restriction controller configured to estimate an output current at the preset voltage as a maximum current when the output voltage of the fuel cell drops to become equal to or smaller than the preset voltage, and restrict the output current of the fuel cell to not more than a first restriction current set based on the estimated maximum current, and a control method for a fuel cell.
    Type: Grant
    Filed: August 25, 2021
    Date of Patent: April 18, 2023
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Sang Chul Yeom, Jeong Kyu Park, Jae Hwan Choi, Sae Byeok Seung, Hyo Jun Kim, Jae Hoon Jeong, Dong Hoon Kim, Seung Yoon Lee
  • Publication number: 20220158205
    Abstract: Disclosed are a control system for a fuel cell including a fuel cell configured to receive a fuel gas and an oxidation gas and generate electric power, a current controller configured to control an output current output from the fuel cell, based on a demanded current of the fuel cell, while maintaining an output voltage output from the fuel cell at a preset voltage or more, and a restriction controller configured to estimate an output current at the preset voltage as a maximum current when the output voltage of the fuel cell drops to become equal to or smaller than the preset voltage, and restrict the output current of the fuel cell to not more than a first restriction current set based on the estimated maximum current, and a control method for a fuel cell.
    Type: Application
    Filed: August 25, 2021
    Publication date: May 19, 2022
    Inventors: Sang Chul Yeom, Jeong Kyu Park, Jae Hwan Choi, Sae Byeok Seung, Hyo Jun Kim, Jae Hoon Jeong, Dong Hoon Kim, Seung Yoon Lee
  • Publication number: 20200216483
    Abstract: The present invention relates to an SMB-based fucose separation method and an apparatus therefor and, more particularly, to a method and an apparatus for continuously separating fucose from a microalgae-derived monosaccharide mixture or a multi-component mixture (monosaccharide substances, amino acid substances, and glycerol components) using an SMB process.
    Type: Application
    Filed: April 16, 2018
    Publication date: July 9, 2020
    Inventors: Yong Keun CHANG, Sungyong MUN, Seokbin HONG, Jae-hwan CHOI
  • Publication number: 20120199486
    Abstract: Provided are a CDI electrode and a method for manufacturing a module using the same. A composite electrode manufactured by the manufacturing method of the present invention can manufacture a CDI electrode capable of increasing adsorption efficiency and rate of ions and selectively adsorbing cation and anion, thereby simply and inexpensively manufacturing the CDI electrode module without using a cation-exchange membrane and an anion-exchange membrane.
    Type: Application
    Filed: October 7, 2010
    Publication date: August 9, 2012
    Applicant: SION TECH CO., LTD.
    Inventors: Kyung Seok Kang, Won Keun Son, Jae Hwan Choi, Nam Soo Park, Tae Il Kim
  • Publication number: 20120132519
    Abstract: Provided is an electrode using a polymeric solution containing a cation exchanger or an anion exchanger, and a capacitive electrolytic cell for deionization using the same.
    Type: Application
    Filed: August 3, 2010
    Publication date: May 31, 2012
    Applicant: SION TECH CO., LTD.
    Inventors: Kyung-Seok Kang, Jae-Hwan Choi
  • Publication number: 20110186656
    Abstract: A mobile terminal with perfume emission includes a perfume generator to store perfume; and a motor coupled to the perfume generator to emit the perfume to outside of the mobile terminal.
    Type: Application
    Filed: October 1, 2010
    Publication date: August 4, 2011
    Applicant: PANTECH CO., LTD.
    Inventors: Seung Bum CHO, Dong Hyun YI, Joo Hee LEE, Jae Hwan CHOI, Hyung Hoon PARK, Goang Yel LYU, Sung Whan LEE, Su Min JUN
  • Patent number: 6327467
    Abstract: A method for computing maximum traffic capacitance of a base station using a virtual call in the digital mobile communication system in such a way that an operator at operating terminal for Base Station Manager (BSM) inputs call-set-request instructions using the virtual call to maintain and repair the digital mobile communication system so that traffic state is set between mobile stations in the service area of test base station and a vocoder of a Base Station Controller (BSC) to compute maximum traffic capacitance of the test base station. An operator at operation terminal inputs call set information by operator instruction as much as mobile station numbers to be tested to compute maximum traffic capacitance of the base station. The BSM inputs a virtual call-set-request-instruction by means of a virtual call-set-start-flag.
    Type: Grant
    Filed: May 12, 1999
    Date of Patent: December 4, 2001
    Assignee: Hyudai Electronics Industries Co., Ltd.
    Inventors: Seung Bong Yang, Jae Hwan Choi, Jae Yong Jeong
  • Patent number: 5770998
    Abstract: Device for displaying stationary/dynamic status of a car for assuring safety including a car stationary/dynamic state sensing part for detecting a change of speed of a predetermined time period sensed by a rotating slit plate mounted on a speed meter cable connecting device and a photo interrupter; a pulse generating part for converting an analog signal from the state sensing part into digital pulses and applying to an microcomputer; the microcomputer for reading in a driving data programmed in a built-in ROM in response to a signal from the pulse generating part and applying driving pulses to a relevant output port; a red LED operating part and a green LED operating part for turning on respective LEDs in a red LED array part and a green LED array part in response to the microcomputer operation output, thereby running states of car can be expressed in stationary/dynamic states of stop, slow running, acceleration, equal speed running, deceleration and reversing under the control of a microcomputer.
    Type: Grant
    Filed: December 9, 1996
    Date of Patent: June 23, 1998
    Inventors: Jae-Hwan Choi, Ho-Sik Choi
  • Patent number: RE43208
    Abstract: A method for computing maximum traffic capacitance of a base station using a virtual call in the digital mobile communication system in such a way that an operator at operating terminal for Base Station Manager (BSM) inputs call-set-request instructions using the virtual call to maintain and repair the digital mobile communication system so that traffic state is set between mobile stations in the service area of test base station and a vocoder of a Base Station Controller (BSC) to compute maximum traffic capacitance of the test base station. An operator at operation terminal inputs call set information by operator instruction as much as mobile station numbers to be tested to compute maximum traffic capacitance of the base station. The BSM inputs a virtual call-set-request-instruction by means of a virtual call-set-start-flag.
    Type: Grant
    Filed: July 16, 2009
    Date of Patent: February 21, 2012
    Assignee: Transpacific Bluetooth, LLC
    Inventors: Seung Bong Yang, Jae Hwan Choi, Jae Yong Jeong