Patents by Inventor Dong Suek Lee

Dong Suek 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).

  • Single-Phase Lithium-Deficient Lithium Multicomponent Transition Metal Oxide Having a Layered Crystal Structure and a Method for Producing the Same
    Publication number: 20140131617
    Abstract: The present invention relates to a single-phase lithium-deficient lithium multicomponent transition metal oxide having a layered crystal structure represented by the formula Li1-aM11-x-y-zM2xM3yM4zO2, wherein M1 is one or more transition metals having an oxidation number of +3; M2 is one or more transition metals having an oxidation number of +4; M3 is one or more transition metals having an oxidation number of +5; M4 is one or more elements having an oxidation number of +2; x+2y?z>0; x+y+z<1; 0<a<1; 0<x<0.75; 0?y<0.6; and 0?z<0.3.
    Type: Application
    Filed: July 9, 2012
    Publication date: May 15, 2014
    Inventors: Sei Ung Park, Ju Suk Ryu, Kyu Ho Song, Si Jin Oh, Dong Suek Lee, Seong Jae Lim, Ki Taeg Jung, Kyoo Seung Han
  • COMPOSITE COMPRISING AN ELECTRODE-ACTIVE TRANSITION METAL COMPOUND AND A FIBROUS CARBON MATERIAL, AND A METHOD FOR PREPARING THE SAME
    Publication number: 20120244334
    Abstract: The present invention provides a complex comprising an aggregate of primary particles of an electrode-active transition metal compound and a fibrous carbon material, wherein said fibrous carbon material is present more densely in the surface region of the aggregate than in the inside of the aggregate.
    Type: Application
    Filed: December 19, 2011
    Publication date: September 27, 2012
    Applicant: HANWHA CHEMICAL CORPORATION
    Inventors: Sei Ung Park, Dong Suek Lee, Ju Suk Ryu, Seong Jae Lim, Si Jin Oh