Patents by Inventor Ho-Hyuk Lee

Ho-Hyuk 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: 8394680
    Abstract: In a layout for a semiconductor device, each active region comprises a first active region, a right active region on the right side of the first active region, a left active region on the left side of the first active region, an upper active region on the upper side of the first active region and a lower active region on the lower side of the first active region, wherein the first active region, the right active region, the left active region, the upper active region and the lower active region each have an inclined portion having a bit-line contact region; and first and second portions having a storage node contact region, first and second ends formed on left and right ends of the inclined portion at a predetermined tilt angle with respect to the inclined portion, the active region being intersected by two word lines and one bit line.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: March 12, 2013
    Assignee: Hynix Semiconductor Inc
    Inventor: Ho Hyuk Lee
  • Publication number: 20110024870
    Abstract: The invention relates to a semiconductor device and its layout, which allows a larger number of capacitors within the same area to increase the cell density, which enables to get a larger number of semiconductor chips out of one wafer, and which retains a sufficient gap between bit lines to prevent SAC failure of the storage node, and to a method of fabricating the semiconductor device.
    Type: Application
    Filed: December 30, 2009
    Publication date: February 3, 2011
    Applicant: Hynix Semiconductor Inc.
    Inventor: Ho Hyuk LEE
  • Patent number: 7674557
    Abstract: An electrode active material further comprising an amphoteric compound, an alkali metal sulfide or an alkali metal oxide, and lithium secondary batteries using the electrode active material, are disclosed. The lithium secondary batteries neutralize acids generating around electrode active material so that it can inhibit the reduction in battery capacity. In addition, the lithium secondary batteries are excellent in its charge-discharge characteristics, cycle life and thermal stability. A method for preparing the electrode active material for lithium secondary batteries is also provided.
    Type: Grant
    Filed: September 19, 2002
    Date of Patent: March 9, 2010
    Assignee: Hanyang Hak Won Co., Ltd.
    Inventors: Yang-Kook Sun, Ho-Hyuk Lee
  • Publication number: 20050042514
    Abstract: An electrode active material further comprising an amphoteric compound, an alkali metal sulfide or an alkali metal oxide, and lithium secondary batteries using the electrode active material, are disclosed. The lithium secondary batteries neutralize acids generating around electrode active material so that it can inhibit the reduction in battery capacity. In addition, the lithium secondary batteries are excellent in its charge-discharge characteristics, cycle life and thermal stability. A method for preparing the electrode active material for lithium secondary batteries is also provided.
    Type: Application
    Filed: September 19, 2002
    Publication date: February 24, 2005
    Inventors: Yang-Kook Sun, Ho-Hyuk Lee