Patents by Inventor Soo Yeong Han

Soo Yeong Han 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).

  • Electrode-active anion-deficient non-stoichiometric lithium iron-phosphate, method for preparing the same, and electrochemical device using the same
    Patent number: 7858233
    Abstract: The invention provides an anion-deficient non-stoichiometric lithium iron phosphate as an electrode-active material, which is represented by the formula Li1?xFe(PO4)1?y, wherein 0<x?0.15 and 0<y?0.05. The invention provides a method for preparing said Li1?xFe(PO4)1?y, which comprises preparing a precursor of lithium iron phosphate; mixing said precursor with water under reaction conditions of 200˜700° C. and 180˜550 bar to produce lithium iron phosphate; and calcining, or granulating and calcining the resultant compound. The invention also provides electrochemical devices employing said Li1?xFe(PO4)1?y as an electrode-active material.
    Type: Grant
    Filed: January 12, 2010
    Date of Patent: December 28, 2010
    Assignee: Hanwha Chemical Corporation
    Inventors: Kyu Ho Song, Wan Jae Myeong, Soo Yeong Han, Kyoo Seung Han
  • ELECTRODE-ACTIVE ANION-DEFICIENT NON-STOICHIOMETRIC LITHIUM IRON PHOSPHATE, METHOD FOR PREPARING THE SAME, AND ELECTROCHEMICAL DEVICE USING THE SAME
    Publication number: 20100183924
    Abstract: The invention provides an anion-deficient non-stoichiometric lithium iron phosphate as an electrode-active material, which is represented by the formula Li1?xFe(PO4)1?y, wherein 0<x?0.15 and 0<y?0.05. The invention provides a method for preparing said Li1?xFe(PO4)1?y, which comprises preparing a precursor of lithium iron phosphate; mixing said precursor with water under reaction conditions of 200˜700° C. and 180˜550 bar to produce lithium iron phosphate; and calcining, or granulating and calcining the resultant compound. The invention also provides electrochemical devices employing said Li1?xFe(PO4)1?y, as an electrode-active material.
    Type: Application
    Filed: January 12, 2010
    Publication date: July 22, 2010
    Applicant: HANWHA CHEMICAL CORPORATION
    Inventors: Kyu Ho Song, Wan Jae Myeong, Soo Yeong Han, Kyoo Seung Han