Patents by Inventor Dzu-Chi Lee

Dzu-Chi 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).

  • Low temperature process for preparing tricobalt tetraoxide
    Publication number: 20050142058
    Abstract: The process of the present invention includes introducing a reaction mixture formed by mixing a precipitation agent with an aqueous solution of cobalt sulfate, cobalt chloride or cobalt nitrate into an autoclave or reactor equipped with a refluxing device directly without filtration, and conducting an oxidation reaction at a temperature of 50-100° C. and in the presence of an oxidant to form a tricobalt tetraoxide powder.
    Type: Application
    Filed: December 30, 2003
    Publication date: June 30, 2005
    Applicant: Industrial Technology Research Institute
    Inventors: Dzu-Chi Lee, Jiunn-Ren Lin, Jer-Yuan Shiu
  • Modified lithium cobalt oxide for lithium ion battery as cathode, preparation thereof, and lithium ion battery
    Publication number: 20040076884
    Abstract: A modified lithium cobalt oxide is useful as a cathode of a lithium ion battery for increasing a charge voltage to 4.4 V. The modified lithium cobalt oxide includes a lithium cobalt oxide particle and an oxide of ZrO2.TiO2.B2O3. Al2O3 or Ga2O3 deposited on a surface of the particle. The modified lithium cobalt oxide is prepared by impregnating the lithium cobalt oxide particle in an aqueous solution containing ions of Zr, Ti, B, Al or Ga, and calcining the impregnated particle.
    Type: Application
    Filed: November 5, 2002
    Publication date: April 22, 2004
    Applicant: Industrial Technology Research Institute
    Inventors: Dzu-Chi Lee, Jiunn-Ren Lin, Jer-Yuan Shiu
  • Method for adsorbing lithium ions from a lithium-containing aqueous solution by a granular adsorbent
    Publication number: 20030231996
    Abstract: A lithium-containing aqueous solution is contacted with a granular adsorbent of lithium-containing manganese oxide to adsorb lithium ions from the aqueous solution on the adsorbent, wherein an alkali is added to the aqueous solution to raise the pH value thereof to about 10 or above prior to the adsorption, thereby the saturated amount of lithium ions adsorbed per gram of adsorbent is increased from about 6 mg to about 25 mg.
    Type: Application
    Filed: June 18, 2002
    Publication date: December 18, 2003
    Applicant: Industrial Technology Research Institute
    Inventors: Jer-Yuan Shiu, Jiunn-Ren Lin, Dzu-Chi Lee, Yung-Min Chen, Chih-Chung Liu