Patents by Inventor Chang-Il Lee

Chang-Il 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: 8399375
    Abstract: The invention relates to a supported metallocene catalyst composition and a process for the preparation of polyolefin using the same. A supported metallocene catalyst composition according to the invention is prepared by bringing a compound of a group IV transition metal into contact with an inorganic or organic porous carrier treated with an ionic compound. Advantages of a supported metallocene catalyst composition of the invention include an increase in the catalyst activity during polymerization of slurry and an olefin compound in the vapor phase even at a low content of metallocene metal components within the carrier, and an improvement in solving process problems such as fouling, sheeting, plugging or the like.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: March 19, 2013
    Assignees: SK Global Chemical Co., Ltd., SK Innovation Co., Ltd.
    Inventors: Seungyeol Han, Myungahn Ok, Young-Soo Ko, Chang-il Lee
  • Publication number: 20110105705
    Abstract: The invention relates to a metallocene supported catalyst composition and a process for the preparation of polyolefin using the same. A metallocene supported catalyst composition according to the invention is prepared by bringing a compound of a group IV transition metal into contact with an inorganic or organic porous carrier treated with an ionic compound. Advantages of a metallocene supported catalyst composition of the invention include an increase in the catalyst activity during polymerization of slurry and an olefin compound in the vapor phase even at a low content of metallocene metal components within the carrier, and an improvement in solving process problems such as fouling, sheeting, plugging or the like.
    Type: Application
    Filed: March 26, 2009
    Publication date: May 5, 2011
    Applicant: SK ENERGY CO., LTD.
    Inventors: Seungyeol Han, Myungahn Ok, Young-Soo Ko, Chang-il Lee
  • Patent number: 7925318
    Abstract: A slide type portable terminal can include a main unit including separated first and second key sections and a first plate coupled to a surface of the main unit and a display unit with a display screen on a front surface and a second plate. The second plate can slide with respect to the first plate and preferably slides along the surface of the main unit to cause the first and second key sections of the main unit to be covered and exposed by the display unit. Further, first and second magnets can be provided on the first and second plates, respectively, so that the same poles of the magnets face each other to provide a repulsive force when they are positioned to face close to each other. According to embodiments of the present invention, there are various advantages in that the portable terminal can be utilized more conveniently and production costs and failure rates thereof can also be reduced.
    Type: Grant
    Filed: January 27, 2010
    Date of Patent: April 12, 2011
    Assignee: LG Electronics Inc.
    Inventors: Sang-Hyuk Im, Hyun-Ho Lee, Chang-Il Lee, Kwon-Jin Kang, Red-Heat Oh, Ji-Sung Park
  • Publication number: 20100130272
    Abstract: A slide type portable terminal can include a main unit including separated first and second key sections and a first plate coupled to a surface of the main unit and a display unit with a display screen on a front surface and a second plate. The second plate can slide with respect to the first plate and preferably slides along the surface of the main unit to cause the first and second key sections of the main unit to be covered and exposed by the display unit. Further, first and second magnets can be provided on the first and second plates, respectively, so that the same poles of the magnets face each other to provide a repulsive force when they are positioned to face close to each other. According to embodiments of the present invention, there are various advantages in that the portable terminal can be utilized more conveniently and production costs and failure rates thereof can also be reduced.
    Type: Application
    Filed: January 27, 2010
    Publication date: May 27, 2010
    Inventors: Sang-Hyuk Im, Hyun-Ho Lee, Chang-Il Lee, Kwon-Jin Kang, Red-Heat Oh, Ji-Sung Park
  • Patent number: 7660614
    Abstract: A slide type portable terminal can include a main unit including separated first and second key sections and a first plate coupled to a surface of the main unit and a display unit with a display screen on a front surface and a second plate. The second plate can slide with respect to the first plate and preferably slides along the surface of the main unit to cause the first and second key sections of the main unit to be covered and exposed by the display unit. Further, first and second magnets can be provided on the first and second plates, respectively, so that the same poles of the magnets face each other to provide a repulsive force when they are positioned to face close to each other. According to embodiments of the present invention, there are various advantages in that the portable terminal can be utilized more conveniently and production costs and failure rates thereof can also be reduced.
    Type: Grant
    Filed: November 21, 2007
    Date of Patent: February 9, 2010
    Assignee: LG Electronics Inc.
    Inventors: Sang-Hyuk Im, Hyun-Ho Lee, Chang-Il Lee, Kwon-Jin Kang, Red-Heat Oh, Ji-Sung Park
  • Patent number: 7363066
    Abstract: A slide type portable terminal can include a main unit including separated first and second key sections and a first plate coupled to a surface of the main unit and a display unit with a display screen on a front surface and a second plate. The second plate can slide with respect to the first plate and preferably slides along the surface of the main unit to cause the first and second key sections of the main unit to be covered and exposed by the display unit. Further, first and second magnets can be provided on the first and second plates, respectively, so that the same poles of the magnets face each other to provide a repulsive force when they are positioned to face close to each other. According to embodiments of the present invention, there are various advantages in that the portable terminal can be utilized more conveniently and production costs and failure rates thereof can also be reduced.
    Type: Grant
    Filed: February 24, 2004
    Date of Patent: April 22, 2008
    Assignee: LG Electronics Inc.
    Inventors: Sang-Hyuk Im, Hyun-Ho Lee, Chang-Il Lee, Kwon-Jin Kang, Red-Heat Oh, Ji-Sung Park
  • Patent number: 7155118
    Abstract: The invention relates to a portable terminal, which can include a main body portion, a display portion provided with a display screen and coupled to an end portion of the main body portion to be folded or unfolded with respect to the main body portion. A camera device that can provide an image of an object to the display screen, which can serve as a camera viewfinder, and a cooperating mechanism that can control the camera device to change its sight line cooperatively to the movement of one of the main body portion and the display portion can be included in the portable terminal.
    Type: Grant
    Filed: February 20, 2004
    Date of Patent: December 26, 2006
    Assignee: LG Electronics Inc.
    Inventor: Chang-Il Lee
  • Publication number: 20050009581
    Abstract: A slide type portable terminal can include a main unit including separated first and second key sections and a first plate coupled to a surface of the main unit and a display unit with a display screen on a front surface and a second plate. The second plate can slide with respect to the first plate and preferably slides along the surface of the main unit to cause the first and second key sections of the main unit to be covered and exposed by the display unit. Further, first and second magnets can be provided on the first and second plates, respectively, so that the same poles of the magnets face each other to provide a repulsive force when they are positioned to face close to each other. According to embodiments of the present invention, there are various advantages in that the portable terminal can be utilized more conveniently and production costs and failure rates thereof can also be reduced.
    Type: Application
    Filed: February 24, 2004
    Publication date: January 13, 2005
    Inventors: Sang-Hyuk Im, Hyun-Ho Lee, Chang-Il Lee, Kwon-Jin Kang, Red-Heat Oh, Ji-Sung Park
  • Patent number: 6842333
    Abstract: A portable electronic device includes a main board fixed inside a case that mounts various circuit parts, an LCD module positioned at an upper side of the main board that has an LCD, an internal frame and a touch screen and an LCD module connecting unit installed for electronic connection between the main board and the LCD module when the main board and the LCD module are mutually combined or assembled. Since the main board connector is installed at the main board and the LCD connector is mounted at one side of the LCD module, when the LCD module is assembled at the main board, the LCD connector and the main board connector are mutually connected. Thus, no electric connection work is necessary, and thus, its assembling is simple and assembly process can be shortened. Further, the LCD module connecting unit can directly connect the main board and the LCD module through a support member therebetween that can include a heat sink for the main board.
    Type: Grant
    Filed: September 9, 2002
    Date of Patent: January 11, 2005
    Assignee: LG Electronics, Inc.
    Inventors: Chang-Il Lee, Byeong-Yun Lee, Jong-Seo Park, Yun-Tae Kim
  • Publication number: 20040257752
    Abstract: The invention relates to a portable terminal, which can include a main body portion, a display portion provided with a display screen and coupled to an end portion of the main body portion to be folded or unfolded with respect to the main body portion. A camera device that can provide an image of an object to the display screen, which can serve as a camera viewfinder, and a cooperating mechanism that can control the camera device to change its sight line cooperatively to the movement of one of the main body portion and the display portion can be included in the portable terminal.
    Type: Application
    Filed: February 20, 2004
    Publication date: December 23, 2004
    Applicant: LG Electronics Inc.
    Inventor: Chang-Il Lee
  • Publication number: 20030048598
    Abstract: A portable electronic device includes a main board fixed inside a case that mounts various circuit parts, an LCD module positioned at an upper side of the main board that has an LCD, an internal frame and a touch screen and an LCD module connecting unit installed for electronic connection between the main board and the LCD module when the main board and the LCD module are mutually combined or assembled. Since the main board connector is installed at the main board and the LCD connector is mounted at one side of the LCD module, when the LCD module is assembled at the main board, the LCD connector and the main board connector are mutually connected. Thus, no electric connection work is necessary, and thus, its assembling is simple and assembly process can be shortened. Further, the LCD module connecting unit can directly connect the main board and the LCD module through a support member therebetween that can include a heat sink for the main board.
    Type: Application
    Filed: September 9, 2002
    Publication date: March 13, 2003
    Applicant: LG ELECTRONICS INC.
    Inventors: Chang-Il Lee, Byeong-Yun Lee, Jong-Seo Park, Yun-Tae Kim
  • Patent number: D772124
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: November 22, 2016
    Assignee: FCA US LLC
    Inventors: Inwoong Lee, Chang-il Lee, Christopher A. Benjamin, Klaus Busse
  • Patent number: D793931
    Type: Grant
    Filed: January 11, 2016
    Date of Patent: August 8, 2017
    Assignee: FCA US LLC
    Inventors: Inwoong Lee, Chang-il Lee, Christopher A. Benjamin, Klaus Busse
  • Patent number: D1071267
    Type: Grant
    Filed: August 25, 2022
    Date of Patent: April 15, 2025
    Assignee: Ford Global Technologies, LLC
    Inventors: Joel Piaskowski, Doyle Letson, Christopher Walter, Chang-il Lee