Patents by Inventor Chang Ha Lee

Chang Ha Lee 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: 9643154
    Abstract: The present invention relates to a method of preparing a carbon dioxide adsorbent and a carbon dioxide capture module including the adsorbent prepared thereby.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: May 9, 2017
    Assignee: University-Industry Foundation, Yonsei University
    Inventors: Chang Ha Lee, Anh Tuan Vu, Doo Wook Kim, Keon Ho
  • Patent number: 9640815
    Abstract: Provided are air humidification device and method for a fuel cell. The air humidification device and method for the fuel cell may cool an air compressor and air compressed by the air compressor and easily humidify air supplied to the fuel cell by mixing water with air and injecting the mixture into an inlet of the air compressor. In particular, the air humidification device and method may easily humidify air supplied to a cathode of the fuel cell by bypassing a portion of the compressed air from an outlet of an air compressor supplying air to the cathode of the fuel cell and simultaneously by injecting condensed water discharged from a fuel cell system into an inlet of the air compressor using the bypassed compressed air.
    Type: Grant
    Filed: December 13, 2014
    Date of Patent: May 2, 2017
    Assignee: Hyundai Motor Company
    Inventors: Hyuck Roul Kwon, Hyun Yoo Kim, Chang Ha Lee
  • Patent number: 9550947
    Abstract: Specific embodiments of the present invention provide a hydrocracking process for converting low value-added heavy hydrocarbon distillates into high value-added hydrocarbon distillates using a supercritical solvent as a medium.
    Type: Grant
    Filed: December 26, 2011
    Date of Patent: January 24, 2017
    Assignees: SK INNOVATION CO., LTD, INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Jae Wook Ryu, IL Yong Jeong, Gyung Rok Kim, Sung Bum Park, Do Woan Kim, Eun Kyoung Kim, Sun Choi, Chang Ha Lee, Jae Hyuk Lee, Yo Han Kim
  • Patent number: 9550167
    Abstract: The present invention relates to a method of preparing a hollow carbon structure. The method includes a step of calcining a solid component separated after a cracking reaction of a heavy hydrocarbon fraction; and a step of performing an acid treatment or base treatment on the solid component calcined in the above-described step. The present invention provides a method of preparing a hollow carbon structure which may be used to separate carbon dioxide, to remove a sulfur compound, and as a carrier of various substances by performing various pre-processes on carbon generated on a surface of a spent catalyst which is used in a cracking reaction of a heavy hydrocarbon fraction.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: January 24, 2017
    Assignee: University-Industry Foundation, Yonsei University
    Inventors: Chang Ha Lee, Koriakin Anton, Doo Wook Kim, Eun Ji Woo
  • Patent number: 9476513
    Abstract: A fuel cell compound valve that opens and closes an inflow line and an exhaust line of a fuel cell stack for a hydrogen fuel cell vehicle includes a support frame having a first bore to which the exhaust line is connected and a second bore to which the inflow line is connected. A first rotation valve is configured to receive a driving torque of a motor installed in the support frame, rotate, and open and close the first bore. A second rotation valve is connected to the first rotation valve and is configured to open and close the second bore. A first coupler protrusion protrudes from a first shaft in a longitudinal direction and has at least one first flat surface perpendicular to the longitudinal direction. A second coupler protrusion protrudes from a second shaft in the longitudinal direction of the first shaft.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: October 25, 2016
    Assignee: Hyundai Motor Company
    Inventors: Jeong Hee Park, Myung Ju Ju Jung, Chang Ha Lee
  • Publication number: 20160190616
    Abstract: A structure of a fuel cell system and a controlling method thereof are provided. The structure of the fuel cell system includes a flow sensor that is configured to detect a flow of air introduced into the fuel cell system and an air compressor that is configured to compress the introduced air and has an air foil bearing to maintain minimum driving revolutions per minute or greater. Additionally, the system includes a flow adjuster that is connected to the fuel cell system. Accordingly, since an amount of air corresponding to a required amount of air of the fuel cell system is supplied by limiting or recirculating an excessive air supply while securing durability and durability of abrasion of the air compressor to which the air foil bearing is applied, a dry phenomenon of the fuel cell system including a stack due to the excessive supply of air is prevented.
    Type: Application
    Filed: June 9, 2015
    Publication date: June 30, 2016
    Inventors: Hyuck Roul Kwon, Kyoung Ku Ha, Hyun Yoo Kim, Chang Ha Lee
  • Publication number: 20160141661
    Abstract: An air processing system of a fuel cell vehicle mounted with an integrated valve includes: the integrated valve attached to an air inlet and an air outlet formed integrally with a fuel cell stack and adjusting amounts of air introduced into and discharged from the fuel cell stack. The integrated valve is positioned at the shortest distance from the fuel cell stack, such that an amount of remaining oxygen that is to be consumed at the time of stopping start of a fuel cell vehicle is minimized. Therefore, corrosion of cathode carbon is decreased as compared with the related art, such that durability of the fuel cell vehicle is improved.
    Type: Application
    Filed: June 2, 2015
    Publication date: May 19, 2016
    Inventors: Duck Whan KIM, Chang Ha LEE
  • Publication number: 20160042347
    Abstract: A method, a server, and a system includes a central server configured to compare an authorization result of a fare payment means upon boarding a transportation means with an authorization result of the fare payment means upon leaving the transportation means, determine whether to update at least one of a boarding terminal and a departure terminal based on the comparison result, and transmit update information to at least one of the boarding terminal and the departure terminal based on the determination result. The boarding terminal performs an authorization process of the fare payment means upon boarding if a network connection between the central server and the boarding terminal is unstable, and the departure terminal performs an authorization process of the fare payment means upon leaving if a network connection between the central server and the departure terminal is unstable.
    Type: Application
    Filed: August 26, 2014
    Publication date: February 11, 2016
    Inventors: Chang Ha LEE, Min Jeong SON
  • Publication number: 20160039690
    Abstract: The present invention relates to an apparatus and a method for treating ballast water, and an exemplary embodiment of the present invention provides a ballast water treatment apparatus including: a tank; a spray nozzle which supplies ballast water in the form of droplets into the tank; and a gas circulation unit which supplies inert gas to the spray nozzle, and sucks inert gas that is not dissolved in the ballast water in the tank.
    Type: Application
    Filed: August 10, 2015
    Publication date: February 11, 2016
    Inventors: Chang Ha LEE, Yongha PARK, Jae-Hoon HONG, Tao WEI, Doo Wook KIM, Jae-Jeong KIM, Pil Rip JEON
  • Publication number: 20150360199
    Abstract: The present invention relates to a method of preparing a carbon dioxide adsorbent and a carbon dioxide capture module including the adsorbent prepared thereby.
    Type: Application
    Filed: June 12, 2015
    Publication date: December 17, 2015
    Inventors: Chang Ha LEE, anh tuan VU, Doo Wook KIM, Keon HO
  • Publication number: 20150349361
    Abstract: Provided are air humidification device and method for a fuel cell. The air humidification device and method for the fuel cell may cool an air compressor and air compressed by the air compressor and easily humidify air supplied to the fuel cell by mixing water with air and injecting the mixture into an inlet of the air compressor. In particular, the air humidification device and method may easily humidify air supplied to a cathode of the fuel cell by bypassing a portion of the compressed air from an outlet of an air compressor supplying air to the cathode of the fuel cell and simultaneously by injecting condensed water discharged from a fuel cell system into an inlet of the air compressor using the bypassed compressed air.
    Type: Application
    Filed: December 13, 2014
    Publication date: December 3, 2015
    Inventors: Hyuck Roul Kwon, Hyun Yoo Kim, Chang Ha Lee
  • Publication number: 20150337971
    Abstract: A fuel cell compound valve that opens and closes an inflow line and an exhaust line of a fuel cell stack for a hydrogen fuel cell vehicle includes a support frame having a first bore to which the exhaust line is connected and a second bore to which the inflow line is connected. A first rotation valve is configured to receive a driving torque of a motor installed in the support frame, rotate, and open and close the first bore. A second rotation valve is connected to the first rotation valve and is configured to open and close the second bore. A first coupler protrusion protrudes from a first shaft in a longitudinal direction and has at least one first flat surface perpendicular to the longitudinal direction. A second coupler protrusion protrudes from a second shaft in the longitudinal direction of the first shaft.
    Type: Application
    Filed: November 25, 2014
    Publication date: November 26, 2015
    Inventors: Jeong Hee PARK, Myung Ju Ju JUNG, Chang Ha LEE
  • Publication number: 20150293106
    Abstract: The present invention relates to a diaromatic amino acid substrate for cathepsin detection. When the substrate used for cathepsin detection is a polymer resulting from the binding of a protease-preferred amino acid and quencher to a diaromatic amino acid, cathepsin can be detected sensitively and accurately by fluorescence because cathepsin causes the protease-preferred amino acid and quencher to dissociate from the diaromatic amino acid, and fluorescence is recovered during this time.
    Type: Application
    Filed: February 13, 2013
    Publication date: October 15, 2015
    Inventors: Dong Ig Lee, Ik Sung Ahn, Chan Jin Kim, Chang Ha Lee
  • Publication number: 20150283535
    Abstract: The present invention relates to a method of preparing a hollow carbon structure. The method includes a step of calcining a solid component separated after a cracking reaction of a heavy hydrocarbon fraction; and a step of performing an acid treatment or base treatment on the solid component calcined in the above-described step. The present invention provides a method of preparing a hollow carbon structure which may be used to separate carbon dioxide, to remove a sulfur compound, and as a carrier of various substances by performing various pre-processes on carbon generated on a surface of a spent catalyst which is used in a cracking reaction of a heavy hydrocarbon fraction.
    Type: Application
    Filed: March 31, 2015
    Publication date: October 8, 2015
    Inventors: Chang Ha Lee, Koriakin Anton, Doo Wook Kim, Eun Ji Woo
  • Publication number: 20150218459
    Abstract: A method of reforming a heavy hydrocarbon distillate, which includes treating a heavy hydrocarbon distillate and a lignocellulosic biomass with a solvent, is provided. The method can be useful in maximizing conversion of the heavy hydrocarbon distillate into higher value-added distillate, for example, naphtha and a middle distillate, and allowing a sulfur compound produced by the decomposition of a heavy hydrocarbon distillate to catalyze pretreatment of the lignocellulosic biomass. Also, oxygen, hydroxymethylfurfural (HMF), levulinic acid, formic acid, and sulfuric acid produced by decomposition of the lignocellulosic biomass can catalyze decomposition of a heavy hydrocarbon distillate and lignocellulosic biomass, thereby activating decomposition of a heavy hydrocarbon distillate.
    Type: Application
    Filed: December 28, 2012
    Publication date: August 6, 2015
    Applicant: Industry-Academic Corporation Foundation, Yonsei University
    Inventors: Chang Ha Lee, Jae Hyuk Lee, Tran Tan Viet, Ik Sung Ahn, Doo Wook Kim
  • Publication number: 20150188161
    Abstract: An air supply apparatus and method for a fuel cell, which supplies high-pressure air while avoiding a surge phenomenon of a turbo type compressor in a fuel cell system to which the turbo type compressor is applied is provided. In particular, a portion of air from an outlet of a compressor to an inlet of the compressor is recirculated to the supply of air supplied from the compressor to a stack. This recirculated air and external air introduced from the outside are mixed and supplied to the inlet of the compressor at a sufficiently high air pressure, allowing the compressor to avoid a surge region and enabling the supply of air with a high pressure and a low flow rate.
    Type: Application
    Filed: December 11, 2014
    Publication date: July 2, 2015
    Inventors: Hyuck Roul Kwon, Chang Ha Lee, Kyoung Ku Ha
  • Publication number: 20150159805
    Abstract: A mounting unit of a driving device for a vehicle is provided that attaches a driving device having a rotary component to a vehicle body. The mounting unit includes a mounting bracket attached to the vehicle body and rubber bushes respectively disposed at both sides of the mounting bracket corresponding to a first side of the driving device and at a substantial center of the mounting bracket corresponding to a second side of the driving device, and the rubber bushes are configured to fix the mounting bracket to the driving device using a plurality of mounting bolts.
    Type: Application
    Filed: June 30, 2014
    Publication date: June 11, 2015
    Inventors: Chang Ha Lee, Hyuck Roul Kwon
  • Publication number: 20150079486
    Abstract: A fuel cell system includes an enclosure having a fuel cell stack producing electricity via an electrochemical reaction between high temperature and high pressure compressed air generated by an air compressor and hydrogen used as fuel. A portion of the compressed air from the air compressor is introduced into the enclosure through a first pipe, and the compressed air flows towards the air compressor from the enclosure through a second pipe. The compressed air introduced into the enclosure via the first pipe removes moisture and hydrogen leaking out of the fuel cell stack and returns to the air compressor via the second pipe.
    Type: Application
    Filed: December 10, 2013
    Publication date: March 19, 2015
    Applicant: HYUNDAI MOTOR COMPANY
    Inventors: Chang Ha LEE, Hyuck Roul KWON, Kyoung Ku HA
  • Patent number: 8957611
    Abstract: The present invention provides a starting device for high-voltage components of a fuel cell vehicle and a method for controlling the same, which can improve starting performance during start-up of the fuel cell vehicle by eliminating a DC-DC converter for the operation of the high-voltage components (e.g., air blower, water pump, etc.) of the fuel cell vehicle, and mounting a separate starting means, which can be operated solely by the power of a 12 V battery, directly on a drive shaft of the high-voltage component.
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: February 17, 2015
    Assignee: Hyundai Motor Company
    Inventor: Chang Ha Lee
  • Patent number: 8944304
    Abstract: Disclosed herein is a breaking apparatus for glass substrates. The breaking apparatus includes a breaking bar connected to a linear driver, a plurality of linear bushes longitudinally mounted on the breaking bar and each including an outer barrel, a plurality of buffer cylinders longitudinally mounted on the breaking bar, and a breaking tip extending in one direction and having a bar shape with a predetermined width. Each of the buffer cylinders includes a hollow cylinder body generating pressure therein, a piston received in the cylinder body, and a piston rod connected to the piston. The breaking tip is disposed in a longitudinal direction of the breaking bar beneath the breaking bar and connected to the piston rods and the shafts to be brought into contact with a glass substrate.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: February 3, 2015
    Assignee: Corning Precision Materials Co., Ltd.
    Inventors: Hyung-sang Roh, Ja-Yong Koo, Sung Cheal Kim, Won-Kyu Park, Chang-Ha Lee