Patents by Inventor In-Gab Chang

In-Gab Chang 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: 20110250521
    Abstract: Disclosed herein is a method of manufacturing an anode for in-situ sintering for a molten carbonate fuel cell, in which an anode green sheet is prepared using a slurry, and then a reinforcing layer is placed on the anode green sheet and then pressed, thereby improving the mechanical stability of a fuel cell stack and the long term stability of an anode, and an anode manufactured using the method.
    Type: Application
    Filed: February 26, 2009
    Publication date: October 13, 2011
    Applicant: DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD
    Inventors: Hwan Moon, Bo Hyun Ryu, Jang Yong You, Ju Young Youn, Mi Young Shin, Woon Yong Choi, Tae Won Lee, In Gab Chang, Kil Ho Moon
  • Patent number: 7855028
    Abstract: Disclosed is a separator plate for a molten carbonate fuel cell, which functions to reform a fuel gas while allowing it to efficiently flow therein and thereout, thus producing hydrogen and carbon dioxide, which are then supplied into an anode, and which functions to realize the electrical connection between the anode and the cathode. In the center plate, having a central portion and peripheral portions of the separator plate, the central portion has gas flow paths, that is, guide protrusions and guide grooves, and the peripheral portions are formed into sidewall parts through a folding process, and thus the number of constituents of the separator plate is minimized, thereby reducing the area to be welded. Further, the sidewall parts are integrally structured with the center plate, thereby increasing airtightness and solving problems of corrosion which may be caused in the welded area.
    Type: Grant
    Filed: February 9, 2007
    Date of Patent: December 21, 2010
    Assignee: Doosan Heavy Industries & Construction Co., Ltd.
    Inventors: Bo-Hyun Ryu, Boo-Ho Yoon, Dong-Woo Kang, Kil-Ho Moon, In-Gab Chang, Gi-Pung Lee, Yun-Sung Kim
  • Publication number: 20100196778
    Abstract: The present invention provides a method of manufacturing a porous metal electrode for a molten carbonate fuel cell using a dry process. According to the method of manufacturing a porous metal electrode of the present invention, in the press process for controlling the thickness of dry-cast metal powder and rearranging the dry-cast metal powder, the microstructure of the porous metal electrode can be controlled, and the uniformity of the thickness of the porous metal electrode can also be controlled. Therefore, the method of manufacturing a porous metal electrode according to the present invention can be used to manufacture both an anode and a cathode.
    Type: Application
    Filed: December 29, 2008
    Publication date: August 5, 2010
    Applicant: DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD.
    Inventors: Ju Young Youn, Bo Hyun Ryu, Jang Yong Yoo, Mi Young Shin, Hwan Moon, Woon Yong Choi, Tae Won Lee, In Gab Chang, Kil Ho Moon
  • Publication number: 20080160365
    Abstract: Disclosed herein is a separator for a molten carbonate fuel cell, the separator including four steel sheets in which edges of the four steel sheets are joined to each other thereby providing three spaces therebetween, comprising a cathode channel, serving as a flow path of oxidant gas, formed in the first space; an anode channel, serving as a flow path of fuel gas, formed in the second space such that the anode channel is separated from the cathode channel; and a fuel gas reforming channel formed in the third space, which is located between the first space and the second space. The separator for a molten carbonate fuel cell is advantageous in that the volume of the fuel cell is decreased, and the structure thereof is simple, thus reducing the production cost thereof.
    Type: Application
    Filed: December 28, 2007
    Publication date: July 3, 2008
    Applicant: DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD.
    Inventors: Young Jin Kim, In Gab Chang, Boo Ho Yoon, Tae Won Lee, YoungBong Kim
  • Publication number: 20080159842
    Abstract: A stack fastening device includes a base, on an upper surface of which a stack is loaded, a compression plate, which has a flat configuration and is placed over the stack to press the stack, and a plurality of vertical beams, which are installed on the base to extend vertically so that the upper end portion of the beams projects out through the edge of the compression plate, A thread is formed in an upper end portion of each vertical beam, nuts are threadedly coupled to the thread such that the nuts can be tightened against upper and lower surfaces of the compression plate, and engagement grooves are defined in the upper surface of the compression plate so that a head of a hydraulic cylinder can be coupled to the compression plate.
    Type: Application
    Filed: December 28, 2007
    Publication date: July 3, 2008
    Applicant: DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD.
    Inventors: Dong Woo Kang, In Gab Chang, Jong Seung Park, Tae Won Lee
  • Publication number: 20070190395
    Abstract: Disclosed is a separator plate for a molten carbonate fuel cell, which functions to reform a fuel gas while allowing it to efficiently flow therein and thereout, thus producing hydrogen and carbon dioxide, which are then supplied into an anode, and which functions to realize the electrical connection between the anode and the cathode. In the center plate, having a central portion and peripheral portions of the separator plate, the central portion has gas flow paths, that is, guide protrusions and guide grooves, and the peripheral portions are formed into sidewall parts through a folding process, and thus the number of constituents of the separator plate is minimized, thereby reducing the area to be welded. Further, the sidewall parts are integrally structured with the center plate, thereby increasing airtightness and solving problems of corrosion which may be caused in the welded area.
    Type: Application
    Filed: February 9, 2007
    Publication date: August 16, 2007
    Applicant: DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD.
    Inventors: Bo-Hyun RYU, Boo-Ho YOON, Dong-Woo KANG, Kil-Ho MOON, In-Gab CHANG, Gi-Pung LEE, Yun-Sung KIM
  • Publication number: 20070190373
    Abstract: The invention relates to a separator plate having a fuel reforming chamber for a molten carbonate fuel cell, which can be simply and easily manufactured to integrate the fuel reforming chamber, which enables indirect reforming, with a separator plate so as to realize uniform heat distribution of the separator plate, and to perform a fuel gas reforming reaction, which is an endothermic reaction, using heat generated during the operation of the fuel cell. According to the invention, a fuel gas such as methane (CH4) is supplied to a fuel reforming chamber to reform it therein so as to convert it into hydrogen, after which the converted fuel gas is supplied between the fuel gas guides of an anode part positioned directly on the fuel reforming chamber, and at the same time, an oxidizing gas is supplied between the oxidizing gas guides positioned directly beneath the fuel reforming chamber, thus generating electricity.
    Type: Application
    Filed: February 9, 2007
    Publication date: August 16, 2007
    Applicant: DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD.
    Inventors: Jong-Seung PARK, In-Gab CHANG, Yun-Sung KIM, Jeong-Seok YOO, Boo-Ho YOON, Bo-Hyun RYU, Kil-Ho MOON, Tae-Won LEE
  • Publication number: 20070184310
    Abstract: A molten carbonate fuel cell, which is provided with an indirect internal steam reformer to efficiently control heat and simplify the system construction and has a simple structure to reduce production cost and efficiently controls heat to reduce operational cost and increase operational efficiency, is disclosed.
    Type: Application
    Filed: December 28, 2006
    Publication date: August 9, 2007
    Applicant: Doosan Heavy Industries & Construction Co., Ltd.
    Inventors: Young Jin Kim, In-Gab Chang, Boo Ho Yoon, Yun Sung Kim, Gi-Pung Lee, Kil-Ho Moon, Tae Won Lee