Patents by Inventor Eung Je Lee

Eung Je 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).

  • Metal composite oxides containing strontium and ionic conductors using the same
    Patent number: 7955530
    Abstract: Disclosed is an ionic conductor comprising a metal composite oxide characterized by comprising oxygen defects and metal defects in a cryolite lattice. An electrochemical device comprising the ionic conductor is also disclosed. The metal composite oxide has an improved ion conductivity, because formation of an open space within a lattice is ensured by the defects of metal ion sites in the lattice. Therefore, the metal composite oxide is useful for an ionic conductor or an electrochemical device requiring ionic conductivity.
    Type: Grant
    Filed: September 5, 2006
    Date of Patent: June 7, 2011
    Assignee: LG Chem, Ltd.
    Inventors: Mi Hyae Park, Eung Je Lee, Yun Ho Roh, Seung Tae Hong
  • Composite oxides comprising strontium, lantanium, tungsten and ionic conductors using the same
    Patent number: 7591966
    Abstract: Disclosed is a novel strontium-lanthanum-tungsten-containing metal composite oxide. An ionic conductor comprising the metal composite oxide and an electrochemical device comprising the ionic conductor are also disclosed. The metal composite oxide has an improved ionic conductivity, because formation of an open space within a lattice is ensured by the defects of metal ion sites in the lattice. Therefore, the metal composite oxide is useful for an ionic conductor or an electrochemical device requiring ionic conductivity.
    Type: Grant
    Filed: October 18, 2006
    Date of Patent: September 22, 2009
    Assignee: LG Chem, Ltd.
    Inventors: Eung Je Lee, Seung Tae Hong
  • Composite oxides comprising strontium, lantanium, yttrium and ionic conductors using the same
    Patent number: 7566411
    Abstract: Disclosed is a novel strontium-lanthanum-yttrium-containing metal composite oxide. An ionic conductor comprising the metal composite oxide and an electrochemical device comprising the ionic conductor are also disclosed. The metal composite oxide has an improved ionic conductivity, because formation of an open space within a lattice is ensured by the defects of metal ion sites in the lattice. Therefore, the metal composite oxide is useful for an ionic conductor or an electrochemical device requiring ionic conductivity.
    Type: Grant
    Filed: October 17, 2006
    Date of Patent: July 28, 2009
    Assignee: LG Chem, Ltd.
    Inventors: Eung Je Lee, Seung Tae Hong
  • Metal composite oxide with novel crystal structure and their use as ionic conductors
    Patent number: 7476376
    Abstract: Disclosed is metal composite oxides having the new crystal structure. Also disclosed are ionic conductors including the metal composite oxides and electrochemical devices comprising the ionic conductors. The metal composite oxides have an ion channel formed for easy movement of ions due to crystallographic specificity resulting from the ordering of metal ion sites and metal ion defects within the unit cell. Therefore, the metal composite oxides according to the present invention are useful in an electrochemical device requiring an ionic conductor or ionic conductivity.
    Type: Grant
    Filed: April 21, 2005
    Date of Patent: January 13, 2009
    Assignee: LG Chem, Ltd.
    Inventors: Seung Tae Hong, Yun Ho Roh, Eung Je Lee, Mi Hyae Park