Patents by Inventor Chul-Ju Kim

Chul-Ju Kim 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: 11926226
    Abstract: A vehicle body includes a floor member, a support member coupled to an upper surface of the floor member, and a frame member coupled to an upper end of the support member to define a space between the floor member and the frame member, wherein the space is configured to house an item. The item may include a high-voltage battery.
    Type: Grant
    Filed: June 11, 2021
    Date of Patent: March 12, 2024
    Assignees: Hyundai Motor Company, Kia Corporation
    Inventors: Seok Ju Gim, Tae Gyu Park, Ho Yeon Kim, Sun Hyung Cho, Chul Hee Heo, Ji Ae Yong
  • Publication number: 20150230305
    Abstract: An alternating current (AC) light-emitting diode (LED) lighting apparatus includes a circuit board having a circuit pattern disposed thereon, LEDs disposed on the circuit board and connected to each other by the circuit pattern, and first to n-th LED drive integrated circuits (IC) disposed on the circuit board and respectively connected to the LEDs and the circuit pattern.
    Type: Application
    Filed: April 23, 2015
    Publication date: August 13, 2015
    Inventors: Seong Bok YOON, Hwi Seok YANG, Chul Ju KIM
  • Patent number: 9084320
    Abstract: An LED luminaire according to an exemplary embodiment of the present invention includes a rectifier outputting a first rectified voltage generated by rectifying AC voltage and flattening the rectified voltage, a power factor correction unit receiving the first rectified voltage output from the rectifier and generating and outputting a drive voltage, an LED light emitting unit including first to m-th light emitting groups each including at least one LED, the LED light emitting unit sequentially driven by receiving the drive voltage input from the power factor correction unit, and an LED drive IC determining a voltage level of the drive voltage upon receiving the drive voltage input from the power factor correction unit, and controlling sequential driving of the first to m-th light emitting groups according to the determined voltage level of the drive voltage.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: July 14, 2015
    Assignee: Posco LED Company Ltd.
    Inventors: Hwi Seok Yang, Chul Ju Kim
  • Patent number: 9041303
    Abstract: Embodiments of the invention provide AC LED lighting apparatuses. The AC LED lighting apparatuses may increase luminous flux and provide optimal efficiency through novel arrangement of a plurality of light emitting blocks on a circuit board and a plurality of LEDs and drive ICs included in each of the light emitting blocks to be sequentially driven, and/or through efficient series-parallel connection between a limited number of LEDs.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: May 26, 2015
    Assignee: Posco LED Company Ltd.
    Inventors: Seong Bok Yoon, Hwi Seok Yang, Chul Ju Kim
  • Publication number: 20140354156
    Abstract: An LED luminaire according to an exemplary embodiment of the present invention includes a rectifier outputting a first rectified voltage generated by rectifying AC voltage and flattening the rectified voltage, a power factor correction unit receiving the first rectified voltage output from the rectifier and generating and outputting a drive voltage, an LED light emitting unit including first to m-th light emitting groups each including at least one LED, the LED light emitting unit sequentially driven by receiving the drive voltage input from the power factor correction unit, and an LED drive IC determining a voltage level of the drive voltage upon receiving the drive voltage input from the power factor correction unit, and controlling sequential driving of the first to m-th light emitting groups according to the determined voltage level of the drive voltage.
    Type: Application
    Filed: July 2, 2013
    Publication date: December 4, 2014
    Inventors: Hwi Seok YANG, Chul Ju Kim
  • Publication number: 20140292213
    Abstract: Embodiments of the invention provide AC LED lighting apparatuses. The AC LED lighting apparatuses may increase luminous flux and provide optimal efficiency through novel arrangement of a plurality of light emitting blocks on a circuit board and a plurality of LEDs and drive ICs included in each of the light emitting blocks to be sequentially driven, and/or through efficient series-parallel connection between a limited number of LEDs.
    Type: Application
    Filed: May 31, 2013
    Publication date: October 2, 2014
    Inventors: Seong Bok YOON, Hwi Seok Yang, Chul Ju Kim
  • Publication number: 20140191673
    Abstract: An LED driving circuit includes: a bridge rectification circuit configured to receive an AC voltage and perform full-wave rectification on the AC voltage, the bridge rectification circuit including a first LED block, a second LED block, a third LED block, and a fourth LED block each including n LEDs (where n is a positive integer equal to or greater than one); a constant current IC configured to constantly limit a current flowing through the bridge rectification circuit; and a Vcc stabilization circuit connected between the constant current IC and a driving voltage supply node positioned between LEDs constituting one of the first to fourth LED blocks, and configured to stabilize a voltage applied through the bridge rectification circuit and provide the constant current IC with a stabilized driving voltage.
    Type: Application
    Filed: December 3, 2013
    Publication date: July 10, 2014
    Applicant: POSCO LED COMPANY LTD.
    Inventors: Seong Bok Yoon, Dae Won Kim, Chul Ju Kim
  • Patent number: 8033017
    Abstract: Provided is a method of manufacturing an evaporator for a loop heat pipe system including a condenser, a vapor transport line, and a liquid transport line, and more particularly, to a method of manufacturing an evaporator for a loop heat pipe system which provides a simple manufacturing process capable of improving a contact state between a sintered wick and a heating plate.
    Type: Grant
    Filed: August 24, 2009
    Date of Patent: October 11, 2011
    Assignees: Zalman Tech Co., Ltd., Sungkyunkwan University Foundation for Corporate Collaboration
    Inventors: Chul-Ju Kim, Min-Whan Seo, Byung-Ho Sung, Jung-Hyun Yoo, Jee-Hoon Choi, Jae-Hyung Ki
  • Publication number: 20100071880
    Abstract: An evaporator for a looped heat pipe (LHP) system, the evaporator including a plurality of wicks having pores formed therein; a plurality of heat transferring fins respectively having a wick coupler to be coupled to one of the plurality of wicks; a plurality of unit assemblies formed by respectively coupling each of the wicks and each of the heat transferring fins; an assembly structure formed by horizontally disposing the unit assemblies to enable a bottom surface of each of the unit assemblies to be located on a planar surface; a heat transferring plate coupled to a bottom part of the assembly structure; and a covering member coupled to the heat transferring plate.
    Type: Application
    Filed: October 9, 2009
    Publication date: March 25, 2010
    Inventors: Chul-Ju Kim, Min-Whan Seo, Byung-Ho Sung, Jung-Hyun Yoo, Jee-Hoon Choi, Jung Rae Jo
  • Publication number: 20100050224
    Abstract: A display apparatus and a control method thereof are provided. The display apparatus includes: a video processing unit which processes a first video; a display unit which displays the first video; a connecting unit which receives a second video of an image communication from a mobile communication terminal which enables the image communication; and a control unit which controls the video processing unit to process the second video of the image communication to display the second video in the display unit, and controls the mobile communication terminal based on a control command of a user.
    Type: Application
    Filed: March 18, 2009
    Publication date: February 25, 2010
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Chul-ju KIM
  • Publication number: 20090313828
    Abstract: Provided is a method of manufacturing an evaporator for a loop heat pipe system including a condenser, a vapor transport line, and a liquid transport line, and more particularly, to a method of manufacturing an evaporator for a loop heat pipe system which provides a simple manufacturing process capable of improving a contact state between a sintered wick and a heating plate.
    Type: Application
    Filed: August 24, 2009
    Publication date: December 24, 2009
    Inventors: Chul-Ju Kim, Min-Whan Seo, Byung-Ho Sung, Jung-Hyun Yoo, Jee-Hoon Choi, Jae-Hyung Ki
  • Publication number: 20090314472
    Abstract: Provided is an evaporator for a loop heat pipe system including a condenser, a vapor transport line, and a liquid transport line, and more particularly, to an evaporator having an increased contact area between a sintered wick and a heating plate.
    Type: Application
    Filed: August 24, 2009
    Publication date: December 24, 2009
    Inventors: Chul Ju Kim, Min-Whan Seo, Byung-Ho Sung, Jung-Hyun Yoo, Jee-Hoon Choi, Jae-Hyung Ki
  • Patent number: D699691
    Type: Grant
    Filed: May 13, 2013
    Date of Patent: February 18, 2014
    Assignee: POSCO LED Company Ltd.
    Inventors: Hwi Seok Yang, Chul Ju Kim